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Stable Isotopes Research Papers - Academia.edu
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Here we... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_68801196" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The Middle Eocene Climatic Optimum (MECO; ~40 Ma), which interrupted for ~500–600 kyr the long-term cooling trend culminating at the Eocene/Oligocene boundary, still requires a comprehensive understanding of the biotic resilience. Here we present a high-resolution integrated foraminiferal and calcareous nannofossil study across the MECO from the expanded and continuous Tethyan Baskil section (eastern Turkey) that offers a complete magneto-biostratigraphic and geochemical framework. The five MECO phases identified reveal a transition from oligotrophic (pre-MECO) to eu-mesotrophic conditions, possibly related to accelerated hydrological cycle, during the initial MECO and MECO δ13C negative excursion phases. The MECO WARMING PEAK phase, marking the highest carbonate dissolution interval, records the most striking biotic changes, such as peak in warm and eutrophic nannofossils, virtual disappearance of the oligotrophic planktic foraminiferal large Acarinina and Morozovelloides, and peak...</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/68801196" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="e587d06979ae3b85be0176ae7a9a223f" rel="nofollow" data-download="{"attachment_id":79147138,"asset_id":68801196,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/79147138/download_file?st=MTczMzExNDcyOSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="109291" href="https://uniurb.academia.edu/RODOLFOCOCCIONI">RODOLFO COCCIONI</a><script data-card-contents-for-user="109291" type="text/json">{"id":109291,"first_name":"RODOLFO","last_name":"COCCIONI","domain_name":"uniurb","page_name":"RODOLFOCOCCIONI","display_name":"RODOLFO COCCIONI","profile_url":"https://uniurb.academia.edu/RODOLFOCOCCIONI?f_ri=7941","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_68801196 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="68801196"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 68801196, container: ".js-paper-rank-work_68801196", }); 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~40 Ma), which interrupted for ~500–600 kyr the long-term cooling trend culminating at the Eocene/Oligocene boundary, still requires a comprehensive understanding of the biotic resilience. Here we present a high-resolution integrated foraminiferal and calcareous nannofossil study across the MECO from the expanded and continuous Tethyan Baskil section (eastern Turkey) that offers a complete magneto-biostratigraphic and geochemical framework. The five MECO phases identified reveal a transition from oligotrophic (pre-MECO) to eu-mesotrophic conditions, possibly related to accelerated hydrological cycle, during the initial MECO and MECO δ13C negative excursion phases. The MECO WARMING PEAK phase, marking the highest carbonate dissolution interval, records the most striking biotic changes, such as peak in warm and eutrophic nannofossils, virtual disappearance of the oligotrophic planktic foraminiferal large Acarinina and Morozovelloides, and peak...","downloadable_attachments":[{"id":79147138,"asset_id":68801196,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":109291,"first_name":"RODOLFO","last_name":"COCCIONI","domain_name":"uniurb","page_name":"RODOLFOCOCCIONI","display_name":"RODOLFO COCCIONI","profile_url":"https://uniurb.academia.edu/RODOLFOCOCCIONI?f_ri=7941","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":7941,"name":"Stable 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href="https://www.academia.edu/1237903/Halogens_and_noble_gases_in_sedimentary_formation_waters_and_Zn_Pb_deposits_A_case_study_from_the_Lennard_Shelf_Australia">Halogens and noble gases in sedimentary formation waters and Zn–Pb deposits: A case study from the Lennard Shelf, Australia</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest">Ore deposits: MVT style</div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/1237903" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="c75eb6dd17eb727ea8199cdea34091b1" rel="nofollow" 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The nature of aquatic landscapes in the Miocene of western Amazonia: an integrated palaeontological and geochemical approach. 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The nature of aquatic landscapes in the Miocene of western Amazonia: an integrated palaeontological and geochemical approach. Scripta Geologica, ...","downloadable_attachments":[{"id":46241223,"asset_id":12325804,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":30981642,"first_name":"Willem","last_name":"Renema","domain_name":"independent","page_name":"WillemRenema","display_name":"Willem Renema","profile_url":"https://independent.academia.edu/WillemRenema?f_ri=7941","photo":"https://0.academia-photos.com/30981642/126900940/116280034/s65_willem.renema.jpeg"}],"research_interests":[{"id":420,"name":"Sedimentology","url":"https://www.academia.edu/Documents/in/Sedimentology?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":11975,"name":"Peru","url":"https://www.academia.edu/Documents/in/Peru?f_ri=7941","nofollow":false},{"id":17472,"name":"Palaeoecology","url":"https://www.academia.edu/Documents/in/Palaeoecology?f_ri=7941","nofollow":false},{"id":91257,"name":"Stable Isotope","url":"https://www.academia.edu/Documents/in/Stable_Isotope?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_48470933" data-work_id="48470933" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/48470933/Sedimentary_facies_and_sedimentology_of_the_late_Quaternary_Santa_Barbara_Basin_Site_893">Sedimentary facies and sedimentology of the late Quaternary Santa Barbara Basin, Site 893</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/48470933" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="d283de4eb8b35fe54b36b3979a473ef3" rel="nofollow" data-download="{"attachment_id":67065040,"asset_id":48470933,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/67065040/download_file?st=MTczMzExNDcyOSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="1187869" href="https://csulb.academia.edu/RichardBehl">Richard Behl</a><script data-card-contents-for-user="1187869" type="text/json">{"id":1187869,"first_name":"Richard","last_name":"Behl","domain_name":"csulb","page_name":"RichardBehl","display_name":"Richard Behl","profile_url":"https://csulb.academia.edu/RichardBehl?f_ri=7941","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_48470933 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="48470933"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 48470933, container: ".js-paper-rank-work_48470933", }); 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Currently, it is helping... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_19806335" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Eighty years have passed since atomic spectroscopy was used to discover deuterium, or “heavy hydrogen.” The element played a transformational role in the development of nuclear energy and isotope chemistry. 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Currently, it is helping astronomers to understand the very origins of our universe.","downloadable_attachments":[{"id":40855608,"asset_id":19806335,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":10095017,"first_name":"Charles","last_name":"Clark","domain_name":"nist","page_name":"CharlesClark","display_name":"Charles Clark","profile_url":"https://nist.academia.edu/CharlesClark?f_ri=7941","photo":"https://gravatar.com/avatar/7650dd0ceee44c728d5da962b4d2df2c?s=65"}],"research_interests":[{"id":501,"name":"Atomic, Molecular, And Optical Physics","url":"https://www.academia.edu/Documents/in/Atomic_Molecular_And_Optical_Physics?f_ri=7941","nofollow":false},{"id":514,"name":"Nuclear Physics","url":"https://www.academia.edu/Documents/in/Nuclear_Physics?f_ri=7941","nofollow":false},{"id":523,"name":"Chemistry","url":"https://www.academia.edu/Documents/in/Chemistry?f_ri=7941","nofollow":false},{"id":3723,"name":"History of Science","url":"https://www.academia.edu/Documents/in/History_of_Science?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_27891886 coauthored" data-work_id="27891886" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/27891886/Animal_Management_at_the_Ancient_Metropolis_of_Teotihuacan_Mexico_Stable_Isotope_Analysis_of_Leporid_Cottontail_and_Jackrabbit_Bone_Mineral">Animal Management at the Ancient Metropolis of Teotihuacan, Mexico: Stable Isotope Analysis of Leporid (Cottontail and Jackrabbit) Bone Mineral</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Human-animal interactions have played crucial roles in the development of complex societies across the globe. This study examines the human-leporid (cottontail and jackrabbit) relationship at the pre-Hispanic (AD 1–550) city of... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_27891886" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Human-animal interactions have played crucial roles in the development of complex societies across the globe. This study examines the human-leporid (cottontail and jackrabbit) relationship at the pre-Hispanic (AD 1–550) city of Teotihuacan in the Basin of Mexico and tests the hypothesis that leporids were managed or bred for food and secondary products within the urban core. We use stable isotope analysis (δ 13 C apatite and δ 18 O apatite) of 134 leporid specimens from five archaeological contexts within the city and 13 modern specimens from across central Mexico to quantify aspects of leporid diet and ecology. The results demonstrate that leporids from Oztoyahualco, a residential complex associated with a unique rabbit sculpture and archaeological traces of animal butchering, exhibit the highest δ 13 C apatite values of the sample. These results imply greater consumption of human-cultivated foods, such as maize (Zea mays), by cottontails and jackrabbits at this complex and suggest practices of human provisioning. A lack of significant differences in δ 18 O apatite values between ancient and modern leporids and between Oztoyahualco and other locations within Teotihuacan indicates generally similar relative humidity from sampled contexts. Results of this study support the notion that residents provisioned, managed, or bred lepor-ids during the height of the city, and provide new evidence for mammalian animal husbandry in the ancient New World.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/27891886" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="133cd045341bbb7bd4b7c6ec37857101" rel="nofollow" data-download="{"attachment_id":48178035,"asset_id":27891886,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/48178035/download_file?st=MTczMzExNDcyOSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="32595317" href="https://unam1.academia.edu/LManzanilla">Linda Rosa Manzanilla</a><script data-card-contents-for-user="32595317" type="text/json">{"id":32595317,"first_name":"Linda Rosa","last_name":"Manzanilla","domain_name":"unam1","page_name":"LManzanilla","display_name":"Linda Rosa Manzanilla","profile_url":"https://unam1.academia.edu/LManzanilla?f_ri=7941","photo":"https://0.academia-photos.com/32595317/9737904/34485495/s65_linda.manzanilla.jpg"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-27891886">+1</span><div class="hidden js-additional-users-27891886"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://unam1.academia.edu/LindaRosaManzanillaNaim">Linda Rosa Manzanilla Naim</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-27891886'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-27891886').html(); 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container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_27891886 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="27891886"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 27891886; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=27891886]").text(description); $(".js-view-count-work_27891886").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_27891886").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="27891886"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">6</a> </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="17759" href="https://www.academia.edu/Documents/in/Teotihuacan">Teotihuacan</a>, <script data-card-contents-for-ri="17759" type="text/json">{"id":17759,"name":"Teotihuacan","url":"https://www.academia.edu/Documents/in/Teotihuacan?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="32303" href="https://www.academia.edu/Documents/in/Isotopic_Analysis">Isotopic Analysis</a>, <script data-card-contents-for-ri="32303" type="text/json">{"id":32303,"name":"Isotopic Analysis","url":"https://www.academia.edu/Documents/in/Isotopic_Analysis?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="309652" href="https://www.academia.edu/Documents/in/Leporids">Leporids</a><script data-card-contents-for-ri="309652" type="text/json">{"id":309652,"name":"Leporids","url":"https://www.academia.edu/Documents/in/Leporids?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=27891886]'), work: {"id":27891886,"title":"Animal Management at the Ancient Metropolis of Teotihuacan, Mexico: Stable Isotope Analysis of Leporid (Cottontail and Jackrabbit) Bone Mineral","created_at":"2016-08-19T08:51:27.237-07:00","url":"https://www.academia.edu/27891886/Animal_Management_at_the_Ancient_Metropolis_of_Teotihuacan_Mexico_Stable_Isotope_Analysis_of_Leporid_Cottontail_and_Jackrabbit_Bone_Mineral?f_ri=7941","dom_id":"work_27891886","summary":"Human-animal interactions have played crucial roles in the development of complex societies across the globe. This study examines the human-leporid (cottontail and jackrabbit) relationship at the pre-Hispanic (AD 1–550) city of Teotihuacan in the Basin of Mexico and tests the hypothesis that leporids were managed or bred for food and secondary products within the urban core. We use stable isotope analysis (δ 13 C apatite and δ 18 O apatite) of 134 leporid specimens from five archaeological contexts within the city and 13 modern specimens from across central Mexico to quantify aspects of leporid diet and ecology. The results demonstrate that leporids from Oztoyahualco, a residential complex associated with a unique rabbit sculpture and archaeological traces of animal butchering, exhibit the highest δ 13 C apatite values of the sample. These results imply greater consumption of human-cultivated foods, such as maize (Zea mays), by cottontails and jackrabbits at this complex and suggest practices of human provisioning. A lack of significant differences in δ 18 O apatite values between ancient and modern leporids and between Oztoyahualco and other locations within Teotihuacan indicates generally similar relative humidity from sampled contexts. Results of this study support the notion that residents provisioned, managed, or bred lepor-ids during the height of the city, and provide new evidence for mammalian animal husbandry in the ancient New World.","downloadable_attachments":[{"id":48178035,"asset_id":27891886,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":32595317,"first_name":"Linda Rosa","last_name":"Manzanilla","domain_name":"unam1","page_name":"LManzanilla","display_name":"Linda Rosa Manzanilla","profile_url":"https://unam1.academia.edu/LManzanilla?f_ri=7941","photo":"https://0.academia-photos.com/32595317/9737904/34485495/s65_linda.manzanilla.jpg"},{"id":32594734,"first_name":"Linda Rosa","last_name":"Manzanilla Naim","domain_name":"unam1","page_name":"LindaRosaManzanillaNaim","display_name":"Linda Rosa Manzanilla Naim","profile_url":"https://unam1.academia.edu/LindaRosaManzanillaNaim?f_ri=7941","photo":"https://0.academia-photos.com/32594734/9736235/10845615/s65_linda_rosa.manzanilla_naim.jpeg"}],"research_interests":[{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":17759,"name":"Teotihuacan","url":"https://www.academia.edu/Documents/in/Teotihuacan?f_ri=7941","nofollow":false},{"id":32303,"name":"Isotopic Analysis","url":"https://www.academia.edu/Documents/in/Isotopic_Analysis?f_ri=7941","nofollow":false},{"id":309652,"name":"Leporids","url":"https://www.academia.edu/Documents/in/Leporids?f_ri=7941","nofollow":false},{"id":788677,"name":"Rabbits","url":"https://www.academia.edu/Documents/in/Rabbits?f_ri=7941"},{"id":2515781,"name":"Oztoyahualco 15B","url":"https://www.academia.edu/Documents/in/Oztoyahualco_15B?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 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data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="eac421e3d40ce89f50759674bdf3da4b" rel="nofollow" data-download="{"attachment_id":46094178,"asset_id":12550164,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/46094178/download_file?st=MTczMzExNDcyOSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="31453877" href="https://uni-tuebingen.academia.edu/ChristophHemlebenunituebingende">Christoph Hemleben</a><script data-card-contents-for-user="31453877" type="text/json">{"id":31453877,"first_name":"Christoph","last_name":"Hemleben","domain_name":"uni-tuebingen","page_name":"ChristophHemlebenunituebingende","display_name":"Christoph Hemleben","profile_url":"https://uni-tuebingen.academia.edu/ChristophHemlebenunituebingende?f_ri=7941","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_12550164 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="12550164"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 12550164, container: ".js-paper-rank-work_12550164", }); });</script></li><li class="js-percentile-work_12550164 InlineList-item InlineList-item--bordered 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class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/1029287/The_Valanginian_positive_carbon_isotope_event_in_Arctic_Russia_Evidence_from_terrestrial_and_marine_isotope_records_and_implications_for_global_carbon_cycling">The Valanginian positive carbon isotope event in Arctic Russia: Evidence from terrestrial and marine isotope records and implications for global carbon cycling</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The data presented here comprise Ryazanian–Valanginian carbon isotope ratios analyzed from fossil wood and belemnites from the shallow marine Boyarka River succession in Siberia. Additional belemnite carbon isotope ratios from the Izhma... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_1029287" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The data presented here comprise Ryazanian–Valanginian carbon isotope ratios analyzed from fossil wood and belemnites from the shallow marine Boyarka River succession in Siberia. Additional belemnite carbon isotope ratios from the Izhma River succession (also Ryazanian–Valanginian) in Russia are also presented. The wood-derived and belemnite-derived isotope ratios are considered to primarily reflct changes in the terrestrial and marine carbon isotope reservoirs respectively. The δ13Ccarb and δ13Cwood records reveal a distinct mid-Valanginian positive carbon isotope excursion, with the initiation occurring near the Boreal Russian michalskii–polyptychus zone boundary, which is broadly time-equivalent Tethyan campylotoxus–verrucosum boundary. The Ryazanian–Valanginian δ13Ccarb values fluctuate between c. –1 and +1.5‰ but reach a maximum of +4.1‰ in the Late Valanginian, whilst the δ13Cwood values fluctuate between c.–27 and –23.5‰ and reach a Late Valanginian maximum of –21.2‰. The excursion maximum in the Boreal Russian bidichotomus zones corresponds with the peak of the Tethyan marine carbonate excursion in the verrucosum–eperegrinus zones, the peak of a marine carbonate excursion recorded in the Argentinean atherstoni Zone and also with the peak of a terrestrial organic carbon isotope excursion in the Crimean trinodosum–ecallidiscus ammonite zones. The synchroneity of the positive carbon isotope event between the marine and terrestrial records and between the northern and southern hemispheres and Tethys, clearly indicates a strong coupling of the ocean-atmosphere system at this time and also confirms that this was a global event, which would have affected the total exchangeable carbon reservoir.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/1029287" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="a59849d62460cd44e504eb0a4dd495d0" rel="nofollow" data-download="{"attachment_id":7267597,"asset_id":1029287,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/7267597/download_file?st=MTczMzExNDcyOSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="856422" href="https://durham.academia.edu/DarrenGrocke">Darren Gröcke</a><script data-card-contents-for-user="856422" type="text/json">{"id":856422,"first_name":"Darren","last_name":"Gröcke","domain_name":"durham","page_name":"DarrenGrocke","display_name":"Darren Gröcke","profile_url":"https://durham.academia.edu/DarrenGrocke?f_ri=7941","photo":"https://0.academia-photos.com/856422/305249/1342118/s65_darren.gr_cke.jpg"}</script></span></span></li><li class="js-paper-rank-work_1029287 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="1029287"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 1029287, container: ".js-paper-rank-work_1029287", }); 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Additional belemnite carbon isotope ratios from the Izhma River succession (also Ryazanian–Valanginian) in Russia are also presented. The wood-derived and belemnite-derived isotope ratios are considered to primarily reflct changes in the terrestrial and marine carbon isotope reservoirs respectively. The δ13Ccarb and δ13Cwood records reveal a distinct mid-Valanginian positive carbon isotope excursion, with the initiation occurring near the Boreal Russian michalskii–polyptychus zone boundary, which is broadly time-equivalent Tethyan campylotoxus–verrucosum boundary. The Ryazanian–Valanginian δ13Ccarb values fluctuate between c. –1 and +1.5‰ but reach a maximum of +4.1‰ in the Late Valanginian, whilst the δ13Cwood values fluctuate between c.–27 and –23.5‰ and reach a Late Valanginian maximum of –21.2‰. The excursion maximum in the Boreal Russian bidichotomus zones corresponds with the peak of the Tethyan marine carbonate excursion in the verrucosum–eperegrinus zones, the peak of a marine carbonate excursion recorded in the Argentinean atherstoni Zone and also with the peak of a terrestrial organic carbon isotope excursion in the Crimean trinodosum–ecallidiscus ammonite zones. The synchroneity of the positive carbon isotope event between the marine and terrestrial records and between the northern and southern hemispheres and Tethys, clearly indicates a strong coupling of the ocean-atmosphere system at this time and also confirms that this was a global event, which would have affected the total exchangeable carbon reservoir.","downloadable_attachments":[{"id":7267597,"asset_id":1029287,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":856422,"first_name":"Darren","last_name":"Gröcke","domain_name":"durham","page_name":"DarrenGrocke","display_name":"Darren Gröcke","profile_url":"https://durham.academia.edu/DarrenGrocke?f_ri=7941","photo":"https://0.academia-photos.com/856422/305249/1342118/s65_darren.gr_cke.jpg"}],"research_interests":[{"id":1034,"name":"Stratigraphy","url":"https://www.academia.edu/Documents/in/Stratigraphy?f_ri=7941","nofollow":false},{"id":1703,"name":"Stable Isotope 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Excursion","url":"https://www.academia.edu/Documents/in/Carbon_Isotope_Excursion?f_ri=7941"},{"id":300889,"name":"Valanginian","url":"https://www.academia.edu/Documents/in/Valanginian?f_ri=7941"},{"id":300907,"name":"Chemostratigraphy","url":"https://www.academia.edu/Documents/in/Chemostratigraphy?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_24326029" data-work_id="24326029" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/24326029/Water_quality_in_four_regions_of_the_Maryland_Coastal_Bays_assessing_nitrogen_source_in_relation_to_rainfall_and_brown_tide">Water quality in four regions of the Maryland Coastal Bays: assessing nitrogen source in relation to rainfall and brown tide</a></div></div><div 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class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_44403189" data-work_id="44403189" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/44403189/Petroleum_source_maturity_alteration_and_mixing_in_the_southwestern_Barents_Sea_New_insights_from_geochemical_and_isotope_data">Petroleum source, maturity, alteration and mixing in the southwestern Barents Sea: New insights from geochemical and isotope data</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The Hammerfest Basin (HB) is an important area for petroleum exploration in the southwestern Nor-wegian Barents Sea. This contribution is aimed to characterize oils and condensates hosted in Triassic and Jurassic reservoirs, establish... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_44403189" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The Hammerfest Basin (HB) is an important area for petroleum exploration in the southwestern Nor-wegian Barents Sea. This contribution is aimed to characterize oils and condensates hosted in Triassic and Jurassic reservoirs, establish genetic relationships and to assess maturity, mixing and petroleum alteration processes. The research was based on geochemical as well as bulk and compound-specific stable carbon and hydrogen isotope analyses of oil and condensate samples from all major fields and discoveries in the HB, including extracts from Jurassic and Triassic source rocks. Interpretations of light hydrocarbon composition and isotope data clearly identify four main petroleum groups affected by microbial degradation, water washing, evaporative fractionation and high thermal maturity level. Based on polycyclic aromatic hydrocarbons (PAHs), marine and higher-plant-derived biomarkers and carbon isotopic composition (d 13 C) of individual petroleum hydrocarbons, four petroleum families (IeIV) are recognized in the HB and a distinction can be made among oils and condensates from different strati-graphic levels and sectors of the Basin. Most oils and condensates from the HB consist of mixtures with small maturity variations; however, oils from Middle Triassic reservoirs in the Goliat field showed larger maturity variations according to biomarker, PAH and light hydrocarbonematurity ratios. In the HB, geochemical and isotopic data allowed unraveling mixtures of hydrocarbons derived mainly from Jurassic, Triassic and Paleozoic source rocks.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/44403189" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="f11363c854450c36dc0e5e5df46c0fb7" rel="nofollow" data-download="{"attachment_id":64812064,"asset_id":44403189,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/64812064/download_file?st=MTczMzExNDcyOSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="142604201" href="https://gfz-potsdam.academia.edu/WendyAMurillo">Wendy A . 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This contribution is aimed to characterize oils and condensates hosted in Triassic and Jurassic reservoirs, establish genetic relationships and to assess maturity, mixing and petroleum alteration processes. The research was based on geochemical as well as bulk and compound-specific stable carbon and hydrogen isotope analyses of oil and condensate samples from all major fields and discoveries in the HB, including extracts from Jurassic and Triassic source rocks. Interpretations of light hydrocarbon composition and isotope data clearly identify four main petroleum groups affected by microbial degradation, water washing, evaporative fractionation and high thermal maturity level. Based on polycyclic aromatic hydrocarbons (PAHs), marine and higher-plant-derived biomarkers and carbon isotopic composition (d 13 C) of individual petroleum hydrocarbons, four petroleum families (IeIV) are recognized in the HB and a distinction can be made among oils and condensates from different strati-graphic levels and sectors of the Basin. Most oils and condensates from the HB consist of mixtures with small maturity variations; however, oils from Middle Triassic reservoirs in the Goliat field showed larger maturity variations according to biomarker, PAH and light hydrocarbonematurity ratios. In the HB, geochemical and isotopic data allowed unraveling mixtures of hydrocarbons derived mainly from Jurassic, Triassic and Paleozoic source rocks.","downloadable_attachments":[{"id":64812064,"asset_id":44403189,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":142604201,"first_name":"Wendy","last_name":"Murillo","domain_name":"gfz-potsdam","page_name":"WendyAMurillo","display_name":"Wendy A . Murillo","profile_url":"https://gfz-potsdam.academia.edu/WendyAMurillo?f_ri=7941","photo":"https://0.academia-photos.com/142604201/43571455/34582430/s65_wendy.murillo.jpg"}],"research_interests":[{"id":4580,"name":"Organic Geochemistry","url":"https://www.academia.edu/Documents/in/Organic_Geochemistry?f_ri=7941","nofollow":false},{"id":6970,"name":"Biomarkers","url":"https://www.academia.edu/Documents/in/Biomarkers?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":20615,"name":"Petroleum geology","url":"https://www.academia.edu/Documents/in/Petroleum_geology?f_ri=7941","nofollow":false},{"id":87990,"name":"Petroleum Geochemistry","url":"https://www.academia.edu/Documents/in/Petroleum_Geochemistry?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_33910905" data-work_id="33910905" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/33910905/Temporal_changes_in_physical_chemical_and_biological_sediment_parameters_in_a_tropical_estuary_after_mangrove_deforestation">Temporal changes in physical, chemical and biological sediment parameters in a tropical estuary after mangrove deforestation</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/33910905" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="99c1a408fc3113aac2fc68f143eabae8" rel="nofollow" data-download="{"attachment_id":53881796,"asset_id":33910905,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/53881796/download_file?st=MTczMzExNDcyOSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="66508740" href="https://independent.academia.edu/KaarinaWeckstr%C3%B6m">Kaarina Weckström</a><script data-card-contents-for-user="66508740" type="text/json">{"id":66508740,"first_name":"Kaarina","last_name":"Weckström","domain_name":"independent","page_name":"KaarinaWeckström","display_name":"Kaarina Weckström","profile_url":"https://independent.academia.edu/KaarinaWeckstr%C3%B6m?f_ri=7941","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_33910905 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="33910905"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 33910905, container: ".js-paper-rank-work_33910905", }); 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$(".js-view-count[data-work-id=33910905]").text(description); $(".js-view-count-work_33910905").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_33910905").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="33910905"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">7</a> </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="400" href="https://www.academia.edu/Documents/in/Earth_Sciences">Earth Sciences</a>, <script data-card-contents-for-ri="400" type="text/json">{"id":400,"name":"Earth Sciences","url":"https://www.academia.edu/Documents/in/Earth_Sciences?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7101" href="https://www.academia.edu/Documents/in/Paleoecology">Paleoecology</a>, <script data-card-contents-for-ri="7101" type="text/json">{"id":7101,"name":"Paleoecology","url":"https://www.academia.edu/Documents/in/Paleoecology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="47884" href="https://www.academia.edu/Documents/in/Biological_Sciences">Biological Sciences</a><script data-card-contents-for-ri="47884" type="text/json">{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=33910905]'), work: {"id":33910905,"title":"Temporal changes in physical, chemical and biological sediment parameters in a tropical estuary after mangrove deforestation","created_at":"2017-07-17T12:40:24.593-07:00","url":"https://www.academia.edu/33910905/Temporal_changes_in_physical_chemical_and_biological_sediment_parameters_in_a_tropical_estuary_after_mangrove_deforestation?f_ri=7941","dom_id":"work_33910905","summary":null,"downloadable_attachments":[{"id":53881796,"asset_id":33910905,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":66508740,"first_name":"Kaarina","last_name":"Weckström","domain_name":"independent","page_name":"KaarinaWeckström","display_name":"Kaarina Weckström","profile_url":"https://independent.academia.edu/KaarinaWeckstr%C3%B6m?f_ri=7941","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":400,"name":"Earth Sciences","url":"https://www.academia.edu/Documents/in/Earth_Sciences?f_ri=7941","nofollow":false},{"id":7101,"name":"Paleoecology","url":"https://www.academia.edu/Documents/in/Paleoecology?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences?f_ri=7941","nofollow":false},{"id":58054,"name":"Environmental Sciences","url":"https://www.academia.edu/Documents/in/Environmental_Sciences?f_ri=7941"},{"id":186099,"name":"Grain size","url":"https://www.academia.edu/Documents/in/Grain_size?f_ri=7941"},{"id":318566,"name":"Sedimentation","url":"https://www.academia.edu/Documents/in/Sedimentation?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_31551161" data-work_id="31551161" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/31551161/A_different_approach_to_old_funal_stable_isotope_data_examining_animal_husbandry_and_landscape_use_in_Roman_Italy_pdf">A different approach to old funal stable isotope data - examining animal husbandry and landscape use in Roman Italy.pdf</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Various environmental niches influence stable isotope values of plants, herbivores, and their consumers. Previous stable isotope analyses conducted on animal remains in Roman Italy have served primarily as isotopic baselines for available... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_31551161" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Various environmental niches influence stable isotope values of plants, herbivores, and their consumers. Previous stable isotope analyses conducted on animal remains in Roman Italy have served primarily as isotopic baselines for available diet to be compared with human data. Directed stable isotope analyses of faunal samples can provide considerably more information than acting as the foundation for human studies. This paper examines how δ13C and δ15N values are used to investigate manuring and penning in other archaeological contexts in order to re-evaluate previous interpretations of faunal isotopic data from the Italian sites of Isola Sacra and Velia (both dating from 100–300 CE). Re-interpreting isotopic data is not only a sustainable archaeological method, but can identify new information related to past lifeways.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/31551161" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="28eb2ba764dabfbfe1acc6ee2df1e57f" rel="nofollow" data-download="{"attachment_id":51890491,"asset_id":31551161,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/51890491/download_file?st=MTczMzExNDcyOSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="46938339" href="https://ualberta.academia.edu/KatherineBishop">Katherine G Bishop</a><script data-card-contents-for-user="46938339" type="text/json">{"id":46938339,"first_name":"Katherine","last_name":"Bishop","domain_name":"ualberta","page_name":"KatherineBishop","display_name":"Katherine G Bishop","profile_url":"https://ualberta.academia.edu/KatherineBishop?f_ri=7941","photo":"https://0.academia-photos.com/46938339/13477564/21372097/s65_katherine.bishop.jpg"}</script></span></span></li><li class="js-paper-rank-work_31551161 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="31551161"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 31551161, container: ".js-paper-rank-work_31551161", }); 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$(".js-view-count[data-work-id=31551161]").text(description); $(".js-view-count-work_31551161").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_31551161").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="31551161"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">5</a> </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="1624" href="https://www.academia.edu/Documents/in/Zooarchaeology">Zooarchaeology</a>, <script data-card-contents-for-ri="1624" type="text/json">{"id":1624,"name":"Zooarchaeology","url":"https://www.academia.edu/Documents/in/Zooarchaeology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="2795" href="https://www.academia.edu/Documents/in/Landscape_Archaeology">Landscape Archaeology</a>, <script data-card-contents-for-ri="2795" type="text/json">{"id":2795,"name":"Landscape Archaeology","url":"https://www.academia.edu/Documents/in/Landscape_Archaeology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="37881" href="https://www.academia.edu/Documents/in/Animal_Husbandry">Animal Husbandry</a><script data-card-contents-for-ri="37881" type="text/json">{"id":37881,"name":"Animal Husbandry","url":"https://www.academia.edu/Documents/in/Animal_Husbandry?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=31551161]'), work: {"id":31551161,"title":"A different approach to old funal stable isotope data - examining animal husbandry and landscape use in Roman Italy.pdf","created_at":"2017-02-21T16:20:43.469-08:00","url":"https://www.academia.edu/31551161/A_different_approach_to_old_funal_stable_isotope_data_examining_animal_husbandry_and_landscape_use_in_Roman_Italy_pdf?f_ri=7941","dom_id":"work_31551161","summary":"Various environmental niches influence stable isotope values of plants, herbivores, and their consumers. Previous stable isotope analyses conducted on animal remains in Roman Italy have served primarily as isotopic baselines for available diet to be compared with human data. Directed stable isotope analyses of faunal samples can provide considerably more information than acting as the foundation for human studies. This paper examines how δ13C and δ15N values are used to investigate manuring and penning in other archaeological contexts in order to re-evaluate previous interpretations of faunal isotopic data from the Italian sites of Isola Sacra and Velia (both dating from 100–300 CE). Re-interpreting isotopic data is not only a sustainable archaeological method, but can identify new information related to past lifeways.","downloadable_attachments":[{"id":51890491,"asset_id":31551161,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":46938339,"first_name":"Katherine","last_name":"Bishop","domain_name":"ualberta","page_name":"KatherineBishop","display_name":"Katherine G Bishop","profile_url":"https://ualberta.academia.edu/KatherineBishop?f_ri=7941","photo":"https://0.academia-photos.com/46938339/13477564/21372097/s65_katherine.bishop.jpg"}],"research_interests":[{"id":1624,"name":"Zooarchaeology","url":"https://www.academia.edu/Documents/in/Zooarchaeology?f_ri=7941","nofollow":false},{"id":2795,"name":"Landscape Archaeology","url":"https://www.academia.edu/Documents/in/Landscape_Archaeology?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":37881,"name":"Animal Husbandry","url":"https://www.academia.edu/Documents/in/Animal_Husbandry?f_ri=7941","nofollow":false},{"id":634974,"name":"Roman Archaeology","url":"https://www.academia.edu/Documents/in/Roman_Archaeology?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_72073507" data-work_id="72073507" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/72073507/Assembling_places_and_persons_a_tenth_century_Viking_boat_burial_from_Swordle_Bay_on_the_Ardnamurchan_peninsula_western_Scotland">Assembling places and persons: a tenth-century Viking boat burial from Swordle Bay on the Ardnamurchan peninsula, western Scotland</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Viking boat burials are iconic archaeological discoveries. Wonderfully preserved examples discovered at Oseberg and Gokstad in Norway have sparked the imagination, and both archaeologists and the general public remain fascinated by these... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_72073507" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Viking boat burials are iconic archaeological discoveries. Wonderfully preserved examples discovered at Oseberg and Gokstad in Norway have sparked the imagination, and both archaeologists and the general public remain fascinated by these acts of conspicuous consumption. In the UK, examples are well known from the Scottish islands, including Orkney (e.g. Scar: Owen and Dalland 1999), Shetland (e.g. Aith, Fetlar: Batey forthcoming) and Colonsay (Kiloran Bay: Anderson 1907), as well as from the Isle of Man (e.g. Balladoole: Bersu and Wilson 1966). Until recently, however, no intact boat burials had been excavated by archaeologists on the UK mainland. This changed in 2011 when the Ardnamurchan Transitions Project, which examines long-term change on the Ardnamurchan peninsula, Western Scotland, discovered and excavated a boat burial in Swordle Bay on the peninsula’s north coast (figure 1). Although not as spectacular in size as some of the Scandinavian examples, it nevertheless represent...</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/72073507" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="e505ea34e347b18bcd37901c3477af0b" rel="nofollow" data-download="{"attachment_id":81149844,"asset_id":72073507,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/81149844/download_file?st=MTczMzExNDcyOSw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="46973367" href="https://independent.academia.edu/JuliaBeaumont">Julia Beaumont</a><script data-card-contents-for-user="46973367" type="text/json">{"id":46973367,"first_name":"Julia","last_name":"Beaumont","domain_name":"independent","page_name":"JuliaBeaumont","display_name":"Julia Beaumont","profile_url":"https://independent.academia.edu/JuliaBeaumont?f_ri=7941","photo":"https://0.academia-photos.com/46973367/14215206/15186391/s65_julia.beaumont.jpg"}</script></span></span></li><li class="js-paper-rank-work_72073507 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="72073507"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 72073507, container: ".js-paper-rank-work_72073507", }); 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Wonderfully preserved examples discovered at Oseberg and Gokstad in Norway have sparked the imagination, and both archaeologists and the general public remain fascinated by these acts of conspicuous consumption. In the UK, examples are well known from the Scottish islands, including Orkney (e.g. Scar: Owen and Dalland 1999), Shetland (e.g. Aith, Fetlar: Batey forthcoming) and Colonsay (Kiloran Bay: Anderson 1907), as well as from the Isle of Man (e.g. Balladoole: Bersu and Wilson 1966). Until recently, however, no intact boat burials had been excavated by archaeologists on the UK mainland. This changed in 2011 when the Ardnamurchan Transitions Project, which examines long-term change on the Ardnamurchan peninsula, Western Scotland, discovered and excavated a boat burial in Swordle Bay on the peninsula’s north coast (figure 1). Although not as spectacular in size as some of the Scandinavian examples, it nevertheless represent...","downloadable_attachments":[{"id":81149844,"asset_id":72073507,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":46973367,"first_name":"Julia","last_name":"Beaumont","domain_name":"independent","page_name":"JuliaBeaumont","display_name":"Julia Beaumont","profile_url":"https://independent.academia.edu/JuliaBeaumont?f_ri=7941","photo":"https://0.academia-photos.com/46973367/14215206/15186391/s65_julia.beaumont.jpg"}],"research_interests":[{"id":128,"name":"History","url":"https://www.academia.edu/Documents/in/History?f_ri=7941","nofollow":false},{"id":261,"name":"Geography","url":"https://www.academia.edu/Documents/in/Geography?f_ri=7941","nofollow":false},{"id":392,"name":"Archaeology","url":"https://www.academia.edu/Documents/in/Archaeology?f_ri=7941","nofollow":false},{"id":5272,"name":"Identity 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analysis","created_at":"2015-08-31T08:36:32.228-07:00","url":"https://www.academia.edu/15302592/The_diets_of_humpback_whales_Megaptera_novaeangliae_on_the_shelf_and_oceanic_feeding_grounds_in_the_western_North_Pacific_inferred_from_stable_isotope_analysis?f_ri=7941","dom_id":"work_15302592","summary":null,"downloadable_attachments":[{"id":43350524,"asset_id":15302592,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":34400099,"first_name":"Briana","last_name":"Witteveen","domain_name":"independent","page_name":"BrianaWitteveen","display_name":"Briana Witteveen","profile_url":"https://independent.academia.edu/BrianaWitteveen?f_ri=7941","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":126884,"name":"Marine Mammal Science","url":"https://www.academia.edu/Documents/in/Marine_Mammal_Science?f_ri=7941","nofollow":false}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_19528030 coauthored" data-work_id="19528030" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/19528030/Paleoenvironmental_context_of_the_Middle_Stone_Age_record_from_Karungu_Lake_Victoria_Basin_Kenya_and_its_implications_for_human_and_faunal_dispersals_in_East_Africa">Paleoenvironmental context of the Middle Stone Age record from Karungu, Lake Victoria Basin, Kenya, and its implications for human and faunal dispersals in East Africa</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/19528030" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="67018fbca75c4f029bf90d974ddad950" rel="nofollow" data-download="{"attachment_id":40674417,"asset_id":19528030,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/40674417/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" 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Beverly","profile_url":"https://umich.academia.edu/EmilyBeverly?f_ri=7941","photo":"https://0.academia-photos.com/39834691/10931129/12198982/s65_emily.beverly.jpg"},{"id":29681976,"first_name":"Steven","last_name":"Driese","domain_name":"baylor","page_name":"StevenDriese","display_name":"Steven G Driese","profile_url":"https://baylor.academia.edu/StevenDriese?f_ri=7941","photo":"https://0.academia-photos.com/29681976/18787421/18747706/s65_steven.driese.jpg"}],"research_interests":[{"id":155,"name":"Evolutionary Biology","url":"https://www.academia.edu/Documents/in/Evolutionary_Biology?f_ri=7941","nofollow":false},{"id":392,"name":"Archaeology","url":"https://www.academia.edu/Documents/in/Archaeology?f_ri=7941","nofollow":false},{"id":398,"name":"Paleoanthropology","url":"https://www.academia.edu/Documents/in/Paleoanthropology?f_ri=7941","nofollow":false},{"id":767,"name":"Anthropology","url":"https://www.academia.edu/Documents/in/Anthropology?f_ri=7941","nofollow":false},{"id":772,"name":"Human Evolution","url":"https://www.academia.edu/Documents/in/Human_Evolution?f_ri=7941"},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941"},{"id":9890,"name":"Quaternary Geology","url":"https://www.academia.edu/Documents/in/Quaternary_Geology?f_ri=7941"},{"id":15778,"name":"Middle Stone Age (Archaeology)","url":"https://www.academia.edu/Documents/in/Middle_Stone_Age_Archaeology_?f_ri=7941"},{"id":17823,"name":"Biogeography","url":"https://www.academia.edu/Documents/in/Biogeography?f_ri=7941"},{"id":63625,"name":"African Archaeology","url":"https://www.academia.edu/Documents/in/African_Archaeology?f_ri=7941"},{"id":91636,"name":"Paleolithic Archaeology","url":"https://www.academia.edu/Documents/in/Paleolithic_Archaeology?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_12640386 coauthored" data-work_id="12640386" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/12640386/13C_and_15N_natural_abundance_of_the_soil_microbial_biomass">13C and 15N natural abundance of the soil microbial biomass</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/12640386" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="b0a60b186c3876f70ebad3facabb785a" rel="nofollow" data-download="{"attachment_id":46033085,"asset_id":12640386,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/46033085/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="31619589" href="https://independent.academia.edu/BruceAHungate">Bruce A Hungate</a><script data-card-contents-for-user="31619589" type="text/json">{"id":31619589,"first_name":"Bruce A","last_name":"Hungate","domain_name":"independent","page_name":"BruceAHungate","display_name":"Bruce A Hungate","profile_url":"https://independent.academia.edu/BruceAHungate?f_ri=7941","photo":"/images/s65_no_pic.png"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-12640386">+1</span><div class="hidden js-additional-users-12640386"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://independent.academia.edu/OMenyailo">O. Menyailo</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-12640386'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-12640386').html(); } } new HoverPopover(popoverSettings); })();</script></li><li class="js-paper-rank-work_12640386 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="12640386"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 12640386, container: ".js-paper-rank-work_12640386", }); });</script></li><li class="js-percentile-work_12640386 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 12640386; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_12640386"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_12640386 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="12640386"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 12640386; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=12640386]").text(description); $(".js-view-count-work_12640386").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_12640386").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="12640386"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">20</a> </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="421" href="https://www.academia.edu/Documents/in/Soil_Science">Soil Science</a>, <script data-card-contents-for-ri="421" type="text/json">{"id":421,"name":"Soil Science","url":"https://www.academia.edu/Documents/in/Soil_Science?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="1703" href="https://www.academia.edu/Documents/in/Stable_Isotope_Analysis">Stable Isotope Analysis</a>, <script data-card-contents-for-ri="1703" type="text/json">{"id":1703,"name":"Stable Isotope Analysis","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Analysis?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="5303" href="https://www.academia.edu/Documents/in/Carbon">Carbon</a>, <script data-card-contents-for-ri="5303" type="text/json">{"id":5303,"name":"Carbon","url":"https://www.academia.edu/Documents/in/Carbon?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a><script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=12640386]'), work: {"id":12640386,"title":"13C and 15N natural abundance of the soil microbial biomass","created_at":"2015-05-27T21:28:12.007-07:00","url":"https://www.academia.edu/12640386/13C_and_15N_natural_abundance_of_the_soil_microbial_biomass?f_ri=7941","dom_id":"work_12640386","summary":null,"downloadable_attachments":[{"id":46033085,"asset_id":12640386,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":31619589,"first_name":"Bruce A","last_name":"Hungate","domain_name":"independent","page_name":"BruceAHungate","display_name":"Bruce A Hungate","profile_url":"https://independent.academia.edu/BruceAHungate?f_ri=7941","photo":"/images/s65_no_pic.png"},{"id":41398316,"first_name":"O.","last_name":"Menyailo","domain_name":"independent","page_name":"OMenyailo","display_name":"O. Menyailo","profile_url":"https://independent.academia.edu/OMenyailo?f_ri=7941","photo":"https://0.academia-photos.com/41398316/11230171/12530454/s65_o..menyailo.jpg"}],"research_interests":[{"id":421,"name":"Soil Science","url":"https://www.academia.edu/Documents/in/Soil_Science?f_ri=7941","nofollow":false},{"id":1703,"name":"Stable Isotope Analysis","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Analysis?f_ri=7941","nofollow":false},{"id":5303,"name":"Carbon","url":"https://www.academia.edu/Documents/in/Carbon?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences?f_ri=7941"},{"id":58054,"name":"Environmental Sciences","url":"https://www.academia.edu/Documents/in/Environmental_Sciences?f_ri=7941"},{"id":83087,"name":"Isotopes","url":"https://www.academia.edu/Documents/in/Isotopes?f_ri=7941"},{"id":91257,"name":"Stable Isotope","url":"https://www.academia.edu/Documents/in/Stable_Isotope?f_ri=7941"},{"id":151091,"name":"Nitrogen","url":"https://www.academia.edu/Documents/in/Nitrogen?f_ri=7941"},{"id":156319,"name":"Soils","url":"https://www.academia.edu/Documents/in/Soils?f_ri=7941"},{"id":169070,"name":"Sol","url":"https://www.academia.edu/Documents/in/Sol?f_ri=7941"},{"id":173028,"name":"Soil organic matter","url":"https://www.academia.edu/Documents/in/Soil_organic_matter?f_ri=7941"},{"id":251645,"name":"Microbial Biomass","url":"https://www.academia.edu/Documents/in/Microbial_Biomass?f_ri=7941"},{"id":361750,"name":"Isotope","url":"https://www.academia.edu/Documents/in/Isotope?f_ri=7941"},{"id":543495,"name":"Soil Biology","url":"https://www.academia.edu/Documents/in/Soil_Biology?f_ri=7941"},{"id":617780,"name":"Soil Type","url":"https://www.academia.edu/Documents/in/Soil_Type?f_ri=7941"},{"id":970387,"name":"Organic Matter","url":"https://www.academia.edu/Documents/in/Organic_Matter?f_ri=7941"},{"id":1009181,"name":"Natural Abundance","url":"https://www.academia.edu/Documents/in/Natural_Abundance?f_ri=7941"},{"id":1188997,"name":"C","url":"https://www.academia.edu/Documents/in/C?f_ri=7941"},{"id":2302453,"name":"Soil microbial biomass","url":"https://www.academia.edu/Documents/in/Soil_microbial_biomass?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_983260" data-work_id="983260" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/983260/An_inter_laboratory_comparative_study_into_sample_preparation_for_both_reproducible_and_repeatable_forensic_2H_isotope_analysis_of_human_hair_by_continuous_flow_isotope_ratio_mass_spectrometry">An inter-laboratory comparative study into sample preparation for both reproducible and repeatable forensic 2H isotope analysis of human hair by continuous flow isotope ratio mass spectrometry</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Stable isotope analysis of organic materials for their hydrogen (2H), carbon (13C), nitrogen (15N) or oxygen (18O) isotopic composition using continuous flow isotope ratio mass spectrometry (CF-IRMS) is an increasingly used tool in... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_983260" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Stable isotope analysis of organic materials for their hydrogen (2H), carbon (13C), nitrogen (15N) or oxygen (18O) isotopic composition using continuous flow isotope ratio mass spectrometry (CF-IRMS) is an increasingly used tool in forensic chemical analysis. 2H isotopic analysis can present a huge challenge, especially when dealing with exhibits comprising exchangeable hydrogen such as human scalp hair. However, to yield forensic data that are fit for purpose, analysis of the 2H isotopic composition of the same homogeneous human hair sample by any laboratory worldwide must yield the same isotopic composition within analytical uncertainty. This paper presents longitudinal 2H isotope data for four human hair samples of different provenance, measured by three different laboratories whose sample preparation was based on a two-stage H exchange equilibration method. Although each laboratory employed varying means to comply with the generic features of the sample preparation protocol such as the 2H isotopic composition of exchange waters or drying down of samples prior to analysis, within each laboratory the Principle of Identical Treatment (P.I.T.) was applied for each individual experiment. Despite the variation in materials and procedures employed by the three laboratories, repeatable and reproducible ‘true’ 2H isotope values (δ2H hair,true) were determined by each laboratory for each of the four stock samples of human scalp hair. The between-laboratory differences for obtained δ2Hhair,true values ranged from 0.1 to 2.5 %. With an overall 95% confidence interval of +/- 2.8 %, these differences were not significantly different, which suggests that the generalmethod of two-stage exchange equilibration carried out at ambient temperature is suitable for accurately and reproducibly determining ‘true’ δ2H-values for hair and other proteins provided that certain key conditions are met.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/983260" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="a9c6f230eff81198f7ac4bc6246eae9f" rel="nofollow" data-download="{"attachment_id":6015524,"asset_id":983260,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/6015524/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="32546" href="https://rgu.academia.edu/WolframMeierAugenstein">Wolfram Meier-Augenstein</a><script data-card-contents-for-user="32546" type="text/json">{"id":32546,"first_name":"Wolfram","last_name":"Meier-Augenstein","domain_name":"rgu","page_name":"WolframMeierAugenstein","display_name":"Wolfram Meier-Augenstein","profile_url":"https://rgu.academia.edu/WolframMeierAugenstein?f_ri=7941","photo":"https://0.academia-photos.com/32546/10537/9922/s65_wolfram.meier-augenstein.jpg"}</script></span></span></li><li class="js-paper-rank-work_983260 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="983260"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 983260, container: ".js-paper-rank-work_983260", }); 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However, to yield forensic data that are fit for purpose, analysis of the 2H isotopic composition of the same homogeneous human hair sample by any laboratory worldwide must yield the same isotopic composition within analytical uncertainty. This paper presents longitudinal 2H isotope data for four human hair samples of different provenance, measured by three different laboratories whose sample preparation was based on a two-stage H exchange equilibration method. Although each laboratory employed varying means to comply with the generic features of the sample preparation protocol such as the 2H isotopic composition of exchange waters or drying down of samples prior to analysis, within each laboratory the Principle of Identical Treatment (P.I.T.) was applied for each individual experiment. Despite the variation in materials and procedures employed by the three laboratories, repeatable and reproducible ‘true’ 2H isotope values (δ2H hair,true) were determined by each laboratory for each of the four stock samples of human scalp hair. The between-laboratory differences for obtained δ2Hhair,true values ranged from 0.1 to 2.5 %. With an overall 95% confidence interval of +/- 2.8 %, these differences were not significantly different, which suggests that the generalmethod of two-stage exchange equilibration carried out at ambient temperature is suitable for accurately and reproducibly determining ‘true’ δ2H-values for hair and other proteins provided that certain key conditions are met.","downloadable_attachments":[{"id":6015524,"asset_id":983260,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":32546,"first_name":"Wolfram","last_name":"Meier-Augenstein","domain_name":"rgu","page_name":"WolframMeierAugenstein","display_name":"Wolfram Meier-Augenstein","profile_url":"https://rgu.academia.edu/WolframMeierAugenstein?f_ri=7941","photo":"https://0.academia-photos.com/32546/10537/9922/s65_wolfram.meier-augenstein.jpg"}],"research_interests":[{"id":1588,"name":"Forensic 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class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/8879334" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="1d455437cf412197f3cd3882cd3a5423" rel="nofollow" data-download="{"attachment_id":47968741,"asset_id":8879334,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/47968741/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa 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href="https://www.academia.edu/Documents/in/Geology">Geology</a>, <script data-card-contents-for-ri="406" type="text/json">{"id":406,"name":"Geology","url":"https://www.academia.edu/Documents/in/Geology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="407" href="https://www.academia.edu/Documents/in/Geochemistry">Geochemistry</a>, <script data-card-contents-for-ri="407" type="text/json">{"id":407,"name":"Geochemistry","url":"https://www.academia.edu/Documents/in/Geochemistry?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="16024" href="https://www.academia.edu/Documents/in/Chemical_Geology">Chemical Geology</a><script data-card-contents-for-ri="16024" type="text/json">{"id":16024,"name":"Chemical Geology","url":"https://www.academia.edu/Documents/in/Chemical_Geology?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=8879334]'), work: {"id":8879334,"title":"Pressure, temperature and fluid conditions during emerald precipitation, southeastern Yukon, Canada: fluid inclusion and stable isotope evidence","created_at":"2014-10-20T18:38:53.772-07:00","url":"https://www.academia.edu/8879334/Pressure_temperature_and_fluid_conditions_during_emerald_precipitation_southeastern_Yukon_Canada_fluid_inclusion_and_stable_isotope_evidence?f_ri=7941","dom_id":"work_8879334","summary":null,"downloadable_attachments":[{"id":47968741,"asset_id":8879334,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":19472504,"first_name":"Dave","last_name":"Mattey","domain_name":"royalholloway","page_name":"DaveMattey","display_name":"Dave Mattey","profile_url":"https://royalholloway.academia.edu/DaveMattey?f_ri=7941","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":406,"name":"Geology","url":"https://www.academia.edu/Documents/in/Geology?f_ri=7941","nofollow":false},{"id":407,"name":"Geochemistry","url":"https://www.academia.edu/Documents/in/Geochemistry?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":16024,"name":"Chemical Geology","url":"https://www.academia.edu/Documents/in/Chemical_Geology?f_ri=7941","nofollow":false},{"id":91257,"name":"Stable Isotope","url":"https://www.academia.edu/Documents/in/Stable_Isotope?f_ri=7941"},{"id":200896,"name":"Hydrothermal Alteration","url":"https://www.academia.edu/Documents/in/Hydrothermal_Alteration?f_ri=7941"},{"id":527989,"name":"Fluid Inclusion","url":"https://www.academia.edu/Documents/in/Fluid_Inclusion?f_ri=7941"},{"id":688910,"name":"Volcanic Rock","url":"https://www.academia.edu/Documents/in/Volcanic_Rock?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_15753731" data-work_id="15753731" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/15753731/What_drove_sea_level_fluctuations_during_the_mid_Cretaceous_greenhouse_climate">What drove sea-level fluctuations during the mid-Cretaceous greenhouse climate?</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The major states, in which Earth's climate operates, i.e., icehouse, greenhouse and hothouse, are epochs of tens of millions of years. These states set long-termboundary conditions that need to be considered for climate and sea level... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_15753731" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The major states, in which Earth's climate operates, i.e., icehouse, greenhouse and hothouse, are epochs of tens of <br />millions of years. These states set long-termboundary conditions that need to be considered for climate and sea level interpretations. This paper summarizes the conceptual models for hydrological cycling derived from the characteristics of these three climate states. While glacio-eustatic forcing of sea-level changes under icehouse climate conditions is fairly well understood, the drivers of eustatic sea-level fluctuations under greenhouse conditions remain enigmatic. This lack of understanding may be related to incoherencies in the current ideas about the impact of accelerated hydrological cycling on sea level under greenhouse climate conditions. <br />As an example for a greenhouse climate, we review evidences that link proxies for climate and sea level for the intensely studied, but controversially discussed, mid-Cretaceous sea-level history. Based on sequence stratigraphy and a recently published high-precision timescale, we demonstrate that the late Middle Turonian Pewsey δ13C isotope maximum represents a major transgression, not a regression as previously stated, which conflicts with the interpretation of a co-occurring δ18O maximum to reflect a short glacial episode. This contradiction can be solved by the concept, presented here, that dominance of aquifer-eustasy characterized sea-level forcing during the Turonian greenhouse climate, despite a possible, though contentious, sporadic presence of minor ice sheets. The effects of temperature and ice volume both lead to a pronounced δ18Ocarb maximum during glacio-eustatic regressions. In contrast, the opposing effects of temperature and groundwater volume on oxygen-isotope fractionation lead to a δ18Ocarb maximum during aquifer-eustatic transgressions. We suggest that, throughout Earth history, both aquifer-eustatic and glacio-eustatic forcing formed a combined sea-level response, with dominance of aquifer-eustasy being typical for the greenhouse climate mode. During the icehouse mode, aquifer-eustasy apparently remains active as a background process, but is outpaced by the glacio-eustatic effect.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/15753731" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="e0bdfd3502c3b9840b86c15a0f3df7ba" rel="nofollow" data-download="{"attachment_id":40718981,"asset_id":15753731,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/40718981/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="915418" href="https://uni-bremen.academia.edu/InesWendler">Ines Wendler</a><script data-card-contents-for-user="915418" type="text/json">{"id":915418,"first_name":"Ines","last_name":"Wendler","domain_name":"uni-bremen","page_name":"InesWendler","display_name":"Ines Wendler","profile_url":"https://uni-bremen.academia.edu/InesWendler?f_ri=7941","photo":"https://0.academia-photos.com/915418/405410/496051/s65_ines.wendler.jpg"}</script></span></span></li><li class="js-paper-rank-work_15753731 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="15753731"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 15753731, container: ".js-paper-rank-work_15753731", }); 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$(".js-view-count[data-work-id=15753731]").text(description); $(".js-view-count-work_15753731").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_15753731").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="15753731"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">15</a> </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="1512" href="https://www.academia.edu/Documents/in/Climate_Change">Climate Change</a>, <script data-card-contents-for-ri="1512" type="text/json">{"id":1512,"name":"Climate Change","url":"https://www.academia.edu/Documents/in/Climate_Change?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="1703" href="https://www.academia.edu/Documents/in/Stable_Isotope_Analysis">Stable Isotope Analysis</a>, <script data-card-contents-for-ri="1703" type="text/json">{"id":1703,"name":"Stable Isotope Analysis","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Analysis?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="18625" href="https://www.academia.edu/Documents/in/Sea_Level">Sea Level</a><script data-card-contents-for-ri="18625" type="text/json">{"id":18625,"name":"Sea Level","url":"https://www.academia.edu/Documents/in/Sea_Level?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=15753731]'), work: {"id":15753731,"title":"What drove sea-level fluctuations during the mid-Cretaceous greenhouse climate?","created_at":"2015-09-16T02:49:26.503-07:00","url":"https://www.academia.edu/15753731/What_drove_sea_level_fluctuations_during_the_mid_Cretaceous_greenhouse_climate?f_ri=7941","dom_id":"work_15753731","summary":"The major states, in which Earth's climate operates, i.e., icehouse, greenhouse and hothouse, are epochs of tens of\r\nmillions of years. These states set long-termboundary conditions that need to be considered for climate and sea level interpretations. This paper summarizes the conceptual models for hydrological cycling derived from the characteristics of these three climate states. While glacio-eustatic forcing of sea-level changes under icehouse climate conditions is fairly well understood, the drivers of eustatic sea-level fluctuations under greenhouse conditions remain enigmatic. This lack of understanding may be related to incoherencies in the current ideas about the impact of accelerated hydrological cycling on sea level under greenhouse climate conditions.\r\nAs an example for a greenhouse climate, we review evidences that link proxies for climate and sea level for the intensely studied, but controversially discussed, mid-Cretaceous sea-level history. Based on sequence stratigraphy and a recently published high-precision timescale, we demonstrate that the late Middle Turonian Pewsey δ13C isotope maximum represents a major transgression, not a regression as previously stated, which conflicts with the interpretation of a co-occurring δ18O maximum to reflect a short glacial episode. This contradiction can be solved by the concept, presented here, that dominance of aquifer-eustasy characterized sea-level forcing during the Turonian greenhouse climate, despite a possible, though contentious, sporadic presence of minor ice sheets. The effects of temperature and ice volume both lead to a pronounced δ18Ocarb maximum during glacio-eustatic regressions. In contrast, the opposing effects of temperature and groundwater volume on oxygen-isotope fractionation lead to a δ18Ocarb maximum during aquifer-eustatic transgressions. We suggest that, throughout Earth history, both aquifer-eustatic and glacio-eustatic forcing formed a combined sea-level response, with dominance of aquifer-eustasy being typical for the greenhouse climate mode. During the icehouse mode, aquifer-eustasy apparently remains active as a background process, but is outpaced by the glacio-eustatic effect.","downloadable_attachments":[{"id":40718981,"asset_id":15753731,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":915418,"first_name":"Ines","last_name":"Wendler","domain_name":"uni-bremen","page_name":"InesWendler","display_name":"Ines Wendler","profile_url":"https://uni-bremen.academia.edu/InesWendler?f_ri=7941","photo":"https://0.academia-photos.com/915418/405410/496051/s65_ines.wendler.jpg"}],"research_interests":[{"id":1512,"name":"Climate Change","url":"https://www.academia.edu/Documents/in/Climate_Change?f_ri=7941","nofollow":false},{"id":1703,"name":"Stable Isotope Analysis","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Analysis?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":18625,"name":"Sea Level","url":"https://www.academia.edu/Documents/in/Sea_Level?f_ri=7941","nofollow":false},{"id":20275,"name":"Sequence Stratigraphy","url":"https://www.academia.edu/Documents/in/Sequence_Stratigraphy?f_ri=7941"},{"id":47930,"name":"Greenhouses","url":"https://www.academia.edu/Documents/in/Greenhouses?f_ri=7941"},{"id":48209,"name":"Hydrological Cycle","url":"https://www.academia.edu/Documents/in/Hydrological_Cycle?f_ri=7941"},{"id":63798,"name":"Cretaceous","url":"https://www.academia.edu/Documents/in/Cretaceous?f_ri=7941"},{"id":126506,"name":"Sea-Level Rise","url":"https://www.academia.edu/Documents/in/Sea-Level_Rise?f_ri=7941"},{"id":195712,"name":"GREENHOUSE","url":"https://www.academia.edu/Documents/in/GREENHOUSE?f_ri=7941"},{"id":230701,"name":"Oxygen Isotopes","url":"https://www.academia.edu/Documents/in/Oxygen_Isotopes?f_ri=7941"},{"id":280973,"name":"Stable Carbon and Oxygen Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Carbon_and_Oxygen_Isotopes?f_ri=7941"},{"id":292976,"name":"AQUIFER","url":"https://www.academia.edu/Documents/in/AQUIFER?f_ri=7941"},{"id":300907,"name":"Chemostratigraphy","url":"https://www.academia.edu/Documents/in/Chemostratigraphy?f_ri=7941"},{"id":1110305,"name":"Eustasy","url":"https://www.academia.edu/Documents/in/Eustasy?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_4193299 coauthored" data-work_id="4193299" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/4193299/Spatial_subdivision_among_assemblages_of_Spanish_mackerel_Scomberomorus_commerson_Pisces_Scombridae_across_northern_Australia_implications_for_fisheries_management">Spatial subdivision among assemblages of Spanish mackerel, Scomberomorus commerson (Pisces: Scombridae) across northern Australia: implications for fisheries management</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Aim This study investigated the use of stable δ13C and δ18O isotopes in the sagittal otolith carbonate of narrow-barred Spanish mackerel, Scomberomorus commerson, as indicators of population structure across Australia.Location Samples... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_4193299" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Aim This study investigated the use of stable δ13C and δ18O isotopes in the sagittal otolith carbonate of narrow-barred Spanish mackerel, Scomberomorus commerson, as indicators of population structure across Australia.Location Samples were collected from 25 locations extending from the lower west coast of Western Australia (30°), across northern Australian waters, and to the east coast of Australia (18°) covering a coastline length of approximately 9500 km, including samples from Indonesia.Methods The stable δ13C and δ18O isotopes in the sagittal otolith carbonate of S. commerson were analysed using standard mass spectrometric techniques. The isotope ratios across northern Australian subregions were subjected to an agglomerative hierarchical cluster analysis to define subregions. Isotope ratios within each of the subregions were compared to assess population structure across Australia.Results Cluster analysis separated samples into four subregions: central Western Australia, north Western Australia, northern Australia and the Gulf of Carpentaria and eastern Australia. Isotope signatures for fish from a number of sampling sites from across Australia and Indonesia were significantly different, indicating population separation. No significant differences were found in otolith isotope ratios between sampling times (no temporal variation).Main conclusions Significant differences in the isotopic signatures of S. commerson demonstrate that there is unlikely to be any substantial movement of fish among these spatially discrete adult assemblages. The lack of temporal variation among otolith isotope ratios indicates that S. commerson populations do not undergo longshore spatial shifts in distribution during their life history. The temporal persistence of spatially explicit stable isotopic signatures indicates that, at these spatial scales, the population units sampled comprise functionally distinct management units or separate ‘stocks’ for many of the purposes of fisheries management. The spatial subdivision evident among populations of S. commerson across northern and western Australia indicates that it may be advantageous to consider S. commerson population dynamics and fisheries management from a metapopulation perspective (at least at the regional level).</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/4193299" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="35381951" href="https://independent.academia.edu/StephenNewman1">Stephen Newman</a><script data-card-contents-for-user="35381951" type="text/json">{"id":35381951,"first_name":"Stephen","last_name":"Newman","domain_name":"independent","page_name":"StephenNewman1","display_name":"Stephen Newman","profile_url":"https://independent.academia.edu/StephenNewman1?f_ri=7941","photo":"/images/s65_no_pic.png"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-4193299">+1</span><div class="hidden js-additional-users-4193299"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://csiro.academia.edu/RikBuckworth">Rik C Buckworth</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-4193299'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-4193299').html(); 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container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_4193299 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="4193299"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 4193299; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=4193299]").text(description); $(".js-view-count-work_4193299").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_4193299").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="4193299"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">13</a> </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="5303" href="https://www.academia.edu/Documents/in/Carbon">Carbon</a>, <script data-card-contents-for-ri="5303" type="text/json">{"id":5303,"name":"Carbon","url":"https://www.academia.edu/Documents/in/Carbon?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="9846" href="https://www.academia.edu/Documents/in/Ecology">Ecology</a>, <script data-card-contents-for-ri="9846" type="text/json">{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="10001" href="https://www.academia.edu/Documents/in/Fisheries_Management">Fisheries Management</a><script data-card-contents-for-ri="10001" type="text/json">{"id":10001,"name":"Fisheries Management","url":"https://www.academia.edu/Documents/in/Fisheries_Management?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=4193299]'), work: {"id":4193299,"title":"Spatial subdivision among assemblages of Spanish mackerel, Scomberomorus commerson (Pisces: Scombridae) across northern Australia: implications for fisheries management","created_at":"2013-08-07T13:52:37.883-07:00","url":"https://www.academia.edu/4193299/Spatial_subdivision_among_assemblages_of_Spanish_mackerel_Scomberomorus_commerson_Pisces_Scombridae_across_northern_Australia_implications_for_fisheries_management?f_ri=7941","dom_id":"work_4193299","summary":"Aim This study investigated the use of stable δ13C and δ18O isotopes in the sagittal otolith carbonate of narrow-barred Spanish mackerel, Scomberomorus commerson, as indicators of population structure across Australia.Location Samples were collected from 25 locations extending from the lower west coast of Western Australia (30°), across northern Australian waters, and to the east coast of Australia (18°) covering a coastline length of approximately 9500 km, including samples from Indonesia.Methods The stable δ13C and δ18O isotopes in the sagittal otolith carbonate of S. commerson were analysed using standard mass spectrometric techniques. The isotope ratios across northern Australian subregions were subjected to an agglomerative hierarchical cluster analysis to define subregions. Isotope ratios within each of the subregions were compared to assess population structure across Australia.Results Cluster analysis separated samples into four subregions: central Western Australia, north Western Australia, northern Australia and the Gulf of Carpentaria and eastern Australia. Isotope signatures for fish from a number of sampling sites from across Australia and Indonesia were significantly different, indicating population separation. No significant differences were found in otolith isotope ratios between sampling times (no temporal variation).Main conclusions Significant differences in the isotopic signatures of S. commerson demonstrate that there is unlikely to be any substantial movement of fish among these spatially discrete adult assemblages. The lack of temporal variation among otolith isotope ratios indicates that S. commerson populations do not undergo longshore spatial shifts in distribution during their life history. The temporal persistence of spatially explicit stable isotopic signatures indicates that, at these spatial scales, the population units sampled comprise functionally distinct management units or separate ‘stocks’ for many of the purposes of fisheries management. The spatial subdivision evident among populations of S. commerson across northern and western Australia indicates that it may be advantageous to consider S. commerson population dynamics and fisheries management from a metapopulation perspective (at least at the regional level).","downloadable_attachments":[],"ordered_authors":[{"id":35381951,"first_name":"Stephen","last_name":"Newman","domain_name":"independent","page_name":"StephenNewman1","display_name":"Stephen Newman","profile_url":"https://independent.academia.edu/StephenNewman1?f_ri=7941","photo":"/images/s65_no_pic.png"},{"id":1117583,"first_name":"Rik","last_name":"Buckworth","domain_name":"csiro","page_name":"RikBuckworth","display_name":"Rik C Buckworth","profile_url":"https://csiro.academia.edu/RikBuckworth?f_ri=7941","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":5303,"name":"Carbon","url":"https://www.academia.edu/Documents/in/Carbon?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology?f_ri=7941","nofollow":false},{"id":10001,"name":"Fisheries Management","url":"https://www.academia.edu/Documents/in/Fisheries_Management?f_ri=7941","nofollow":false},{"id":17656,"name":"Community","url":"https://www.academia.edu/Documents/in/Community?f_ri=7941"},{"id":17823,"name":"Biogeography","url":"https://www.academia.edu/Documents/in/Biogeography?f_ri=7941"},{"id":83087,"name":"Isotopes","url":"https://www.academia.edu/Documents/in/Isotopes?f_ri=7941"},{"id":146482,"name":"Fishery Management","url":"https://www.academia.edu/Documents/in/Fishery_Management?f_ri=7941"},{"id":160431,"name":"Metapopulation","url":"https://www.academia.edu/Documents/in/Metapopulation?f_ri=7941"},{"id":321913,"name":"Stock","url":"https://www.academia.edu/Documents/in/Stock?f_ri=7941"},{"id":361750,"name":"Isotope","url":"https://www.academia.edu/Documents/in/Isotope?f_ri=7941"},{"id":684392,"name":"Global Ecology","url":"https://www.academia.edu/Documents/in/Global_Ecology?f_ri=7941"},{"id":843856,"name":"Ecological Applications","url":"https://www.academia.edu/Documents/in/Ecological_Applications?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_8519498" data-work_id="8519498" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/8519498/Food_web_overlap_among_native_axolotl_Ambystoma_mexicanum_and_two_exotic_fishes_carp_Cyprinus_carpio_and_tilapia_Oreochromis_niloticus_in_Xochimilco_Mexico_City">Food web overlap among native axolotl ( Ambystoma mexicanum ) and two exotic fishes: carp ( Cyprinus carpio ) and tilapia ( Oreochromis niloticus ) in Xochimilco, Mexico City</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Two exotic fishes, common carp (Cyprinus carpio) and tilapia (Oreochromis niloticus), were introduced more than 20 years ago into Xochimilco for aquaculture, and now dominate the system in terms of biomass and numbers. Over this same... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_8519498" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Two exotic fishes, common carp (Cyprinus carpio) and tilapia (Oreochromis niloticus), were introduced more than 20 years ago into Xochimilco for aquaculture, and now dominate the system in terms of biomass and numbers. Over this same period, wild populations of the microendemic axolotl salamander (Ambystoma mexicanum) have been dramatically reduced, and it currently persists in isolated areas of this aquatic system, which is situated at the edge of Mexico City. In this study, we examine potential trophic interactions and niche overlap among two exotic fishes: carp and tilapia, and the native axolotl. Axolotl had more diverse diets and a higher trophic position compared to the exotics. Stable isotope analysis revealed substantial trophic niche overlap among axolotl and the exotics. The two exotics occupied a larger niche area than the axolotl, suggesting higher levels of omnivory and diet specialization. Current exotic fish removal efforts will further our understanding of interactions between the axolotl and exotic species, and are expected to benefit axolotl recovery efforts.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/8519498" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="4adcaaf37a861f32e3b5c41261d61358" rel="nofollow" data-download="{"attachment_id":48070604,"asset_id":8519498,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/48070604/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="17468714" href="https://independent.academia.edu/ElsaValiente">Elsa Valiente</a><script data-card-contents-for-user="17468714" type="text/json">{"id":17468714,"first_name":"Elsa","last_name":"Valiente","domain_name":"independent","page_name":"ElsaValiente","display_name":"Elsa Valiente","profile_url":"https://independent.academia.edu/ElsaValiente?f_ri=7941","photo":"https://0.academia-photos.com/17468714/4856461/5587553/s65_elsa.valiente.jpg_oh_0ca8efff44b70d4ae26851dd90b273de_oe_54bfbdf8___gda___1422033780_55f16995c7d0b1497005cfe8f7d3c48f"}</script></span></span></li><li class="js-paper-rank-work_8519498 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="8519498"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 8519498, container: ".js-paper-rank-work_8519498", }); 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$(".js-view-count[data-work-id=8519498]").text(description); $(".js-view-count-work_8519498").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_8519498").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="8519498"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">20</a> </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="1703" href="https://www.academia.edu/Documents/in/Stable_Isotope_Analysis">Stable Isotope Analysis</a>, <script data-card-contents-for-ri="1703" type="text/json">{"id":1703,"name":"Stable Isotope Analysis","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Analysis?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="5190" href="https://www.academia.edu/Documents/in/Exotic_Species">Exotic Species</a>, <script data-card-contents-for-ri="5190" type="text/json">{"id":5190,"name":"Exotic Species","url":"https://www.academia.edu/Documents/in/Exotic_Species?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="11417" href="https://www.academia.edu/Documents/in/Population_Dynamics">Population Dynamics</a><script data-card-contents-for-ri="11417" type="text/json">{"id":11417,"name":"Population Dynamics","url":"https://www.academia.edu/Documents/in/Population_Dynamics?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=8519498]'), work: {"id":8519498,"title":"Food web overlap among native axolotl ( Ambystoma mexicanum ) and two exotic fishes: carp ( Cyprinus carpio ) and tilapia ( Oreochromis niloticus ) in Xochimilco, Mexico City","created_at":"2014-09-27T06:04:43.721-07:00","url":"https://www.academia.edu/8519498/Food_web_overlap_among_native_axolotl_Ambystoma_mexicanum_and_two_exotic_fishes_carp_Cyprinus_carpio_and_tilapia_Oreochromis_niloticus_in_Xochimilco_Mexico_City?f_ri=7941","dom_id":"work_8519498","summary":"Two exotic fishes, common carp (Cyprinus carpio) and tilapia (Oreochromis niloticus), were introduced more than 20 years ago into Xochimilco for aquaculture, and now dominate the system in terms of biomass and numbers. Over this same period, wild populations of the microendemic axolotl salamander (Ambystoma mexicanum) have been dramatically reduced, and it currently persists in isolated areas of this aquatic system, which is situated at the edge of Mexico City. In this study, we examine potential trophic interactions and niche overlap among two exotic fishes: carp and tilapia, and the native axolotl. Axolotl had more diverse diets and a higher trophic position compared to the exotics. Stable isotope analysis revealed substantial trophic niche overlap among axolotl and the exotics. The two exotics occupied a larger niche area than the axolotl, suggesting higher levels of omnivory and diet specialization. Current exotic fish removal efforts will further our understanding of interactions between the axolotl and exotic species, and are expected to benefit axolotl recovery efforts.","downloadable_attachments":[{"id":48070604,"asset_id":8519498,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":17468714,"first_name":"Elsa","last_name":"Valiente","domain_name":"independent","page_name":"ElsaValiente","display_name":"Elsa Valiente","profile_url":"https://independent.academia.edu/ElsaValiente?f_ri=7941","photo":"https://0.academia-photos.com/17468714/4856461/5587553/s65_elsa.valiente.jpg_oh_0ca8efff44b70d4ae26851dd90b273de_oe_54bfbdf8___gda___1422033780_55f16995c7d0b1497005cfe8f7d3c48f"}],"research_interests":[{"id":1703,"name":"Stable Isotope Analysis","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Analysis?f_ri=7941","nofollow":false},{"id":5190,"name":"Exotic Species","url":"https://www.academia.edu/Documents/in/Exotic_Species?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":11417,"name":"Population Dynamics","url":"https://www.academia.edu/Documents/in/Population_Dynamics?f_ri=7941","nofollow":false},{"id":11870,"name":"Invasive Species","url":"https://www.academia.edu/Documents/in/Invasive_Species?f_ri=7941"},{"id":17792,"name":"Biological invasions","url":"https://www.academia.edu/Documents/in/Biological_invasions?f_ri=7941"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences?f_ri=7941"},{"id":58054,"name":"Environmental Sciences","url":"https://www.academia.edu/Documents/in/Environmental_Sciences?f_ri=7941"},{"id":82682,"name":"Food web","url":"https://www.academia.edu/Documents/in/Food_web?f_ri=7941"},{"id":83087,"name":"Isotopes","url":"https://www.academia.edu/Documents/in/Isotopes?f_ri=7941"},{"id":86138,"name":"Mexico City","url":"https://www.academia.edu/Documents/in/Mexico_City?f_ri=7941"},{"id":180236,"name":"Niche Overlap","url":"https://www.academia.edu/Documents/in/Niche_Overlap?f_ri=7941"},{"id":239605,"name":"Introduced species","url":"https://www.academia.edu/Documents/in/Introduced_species?f_ri=7941"},{"id":392475,"name":"Wild animals","url":"https://www.academia.edu/Documents/in/Wild_animals?f_ri=7941"},{"id":736663,"name":"Oreochromis niloticus","url":"https://www.academia.edu/Documents/in/Oreochromis_niloticus?f_ri=7941"},{"id":835287,"name":"Trophic Interaction","url":"https://www.academia.edu/Documents/in/Trophic_Interaction?f_ri=7941"},{"id":981930,"name":"Niches","url":"https://www.academia.edu/Documents/in/Niches?f_ri=7941"},{"id":999031,"name":"Cyprinus Carpio","url":"https://www.academia.edu/Documents/in/Cyprinus_Carpio?f_ri=7941"},{"id":1227555,"name":"Indigenous Species","url":"https://www.academia.edu/Documents/in/Indigenous_Species?f_ri=7941"},{"id":2431009,"name":"Common Carp","url":"https://www.academia.edu/Documents/in/Common_Carp?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_35196384" data-work_id="35196384" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/35196384/Ancient_DNA_from_marine_mammals_Studying_long_lived_species_over_ecological_and_evolutionary_timescales">Ancient DNA from marine mammals: Studying long-lived species over ecological and evolutionary timescales</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/35196384" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="11646a6e15ffd9984df78d470fd484fb" rel="nofollow" data-download="{"attachment_id":55057029,"asset_id":35196384,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/55057029/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="33527018" href="https://independent.academia.edu/MHofreiter">Michael Hofreiter</a><script data-card-contents-for-user="33527018" type="text/json">{"id":33527018,"first_name":"Michael","last_name":"Hofreiter","domain_name":"independent","page_name":"MHofreiter","display_name":"Michael Hofreiter","profile_url":"https://independent.academia.edu/MHofreiter?f_ri=7941","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_35196384 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="35196384"><i class="u-m1x fa 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view-count u-mr2x" data-work-id="35196384"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 35196384; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=35196384]").text(description); $(".js-view-count-work_35196384").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_35196384").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="35196384"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">20</a> </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="158" href="https://www.academia.edu/Documents/in/Marine_Biology">Marine Biology</a>, <script data-card-contents-for-ri="158" type="text/json">{"id":158,"name":"Marine Biology","url":"https://www.academia.edu/Documents/in/Marine_Biology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="417" href="https://www.academia.edu/Documents/in/Paleontology">Paleontology</a>, <script data-card-contents-for-ri="417" type="text/json">{"id":417,"name":"Paleontology","url":"https://www.academia.edu/Documents/in/Paleontology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="9846" href="https://www.academia.edu/Documents/in/Ecology">Ecology</a><script data-card-contents-for-ri="9846" type="text/json">{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=35196384]'), work: {"id":35196384,"title":"Ancient DNA from marine mammals: Studying long-lived species over ecological and evolutionary timescales","created_at":"2017-11-20T04:20:54.547-08:00","url":"https://www.academia.edu/35196384/Ancient_DNA_from_marine_mammals_Studying_long_lived_species_over_ecological_and_evolutionary_timescales?f_ri=7941","dom_id":"work_35196384","summary":null,"downloadable_attachments":[{"id":55057029,"asset_id":35196384,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":33527018,"first_name":"Michael","last_name":"Hofreiter","domain_name":"independent","page_name":"MHofreiter","display_name":"Michael Hofreiter","profile_url":"https://independent.academia.edu/MHofreiter?f_ri=7941","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":158,"name":"Marine Biology","url":"https://www.academia.edu/Documents/in/Marine_Biology?f_ri=7941","nofollow":false},{"id":417,"name":"Paleontology","url":"https://www.academia.edu/Documents/in/Paleontology?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology?f_ri=7941","nofollow":false},{"id":10882,"name":"Evolution","url":"https://www.academia.edu/Documents/in/Evolution?f_ri=7941"},{"id":35287,"name":"DISTRIBUTION","url":"https://www.academia.edu/Documents/in/DISTRIBUTION?f_ri=7941"},{"id":41779,"name":"Mammals","url":"https://www.academia.edu/Documents/in/Mammals?f_ri=7941"},{"id":48057,"name":"DNA","url":"https://www.academia.edu/Documents/in/DNA?f_ri=7941"},{"id":54433,"name":"Phylogeny","url":"https://www.academia.edu/Documents/in/Phylogeny?f_ri=7941"},{"id":75056,"name":"Whales","url":"https://www.academia.edu/Documents/in/Whales?f_ri=7941"},{"id":91257,"name":"Stable Isotope","url":"https://www.academia.edu/Documents/in/Stable_Isotope?f_ri=7941"},{"id":100347,"name":"Ancient DNA","url":"https://www.academia.edu/Documents/in/Ancient_DNA?f_ri=7941"},{"id":186234,"name":"Medical Physiology","url":"https://www.academia.edu/Documents/in/Medical_Physiology?f_ri=7941"},{"id":191815,"name":"Biological evolution","url":"https://www.academia.edu/Documents/in/Biological_evolution?f_ri=7941"},{"id":577205,"name":"Otters","url":"https://www.academia.edu/Documents/in/Otters?f_ri=7941"},{"id":577933,"name":"Genetic variation","url":"https://www.academia.edu/Documents/in/Genetic_variation?f_ri=7941"},{"id":637974,"name":"Distribution","url":"https://www.academia.edu/Documents/in/Distribution-3?f_ri=7941"},{"id":726208,"name":"Marine Mammal","url":"https://www.academia.edu/Documents/in/Marine_Mammal?f_ri=7941"},{"id":1208706,"name":"Environment","url":"https://www.academia.edu/Documents/in/Environment?f_ri=7941"},{"id":1232430,"name":"Genetic Markers","url":"https://www.academia.edu/Documents/in/Genetic_Markers?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_34949442" data-work_id="34949442" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/34949442/Evapotranspiration_and_water_source_of_a_tropical_rainforest_in_peninsular_Malaysia">Evapotranspiration and water source of a tropical rainforest in peninsular Malaysia</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">To evaluate water use and the supporting water source of a tropical rainforest, a 4‐year assessment of evapotranspiration (ET) was conducted in Pasoh Forest Reserve, a lowland dipterocarp forest in Peninsular Malaysia. The eddy covariance... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_34949442" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">To evaluate water use and the supporting water source of a tropical rainforest, a 4‐year assessment of evapotranspiration (ET) was conducted in Pasoh Forest Reserve, a lowland dipterocarp forest in Peninsular Malaysia. The eddy covariance method and isotope signals of rain, plant, soil, and stream waters were used to determine forest water sources under different moisture conditions. Four sampling events were conducted to collect soil and plant twig samples in wet, moderate , dry, and very dry conditions for the identification of isotopic signals. Annual ET from 2012 to 2015 was quite stable with an average of 1,182 ± 26 mm, and a substantial daily ET was observed even during drought periods, although some decline was observed, corresponding with volumet-ric soil water content. During the wet period, water for ET was supplied from the surface soil layer between 0 and 0.5 m, whereas in the dry period, approximately 50% to 90% was supplied from the deeper soil layer below 0.5‐m depth, originating from water precipitated several months previously at this forest. Isotope signatures demonstrated that the water sources of the plants, soil, and stream were all different. Water in plants was often different from soil water, probably because plant water came from a different source than water that was strongly bound to the soil particles. Plants showed no preference for soil depth with their size, whereas the existence of storage water in the xylem was suggested. The evapotranspiration at this forest is balanced and maintained using most of the available water sources except for a proportion of rapid response run‐off.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/34949442" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="387d6a362523bd19d4e65bea1a99070f" rel="nofollow" data-download="{"attachment_id":54811696,"asset_id":34949442,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/54811696/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="50213028" href="https://frim.academia.edu/MarryannaLion">Marryanna Lion</a><script data-card-contents-for-user="50213028" type="text/json">{"id":50213028,"first_name":"Marryanna","last_name":"Lion","domain_name":"frim","page_name":"MarryannaLion","display_name":"Marryanna Lion","profile_url":"https://frim.academia.edu/MarryannaLion?f_ri=7941","photo":"https://0.academia-photos.com/50213028/19755473/19601876/s65_marryanna.lion.jpg"}</script></span></span></li><li class="js-paper-rank-work_34949442 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="34949442"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 34949442, container: ".js-paper-rank-work_34949442", }); });</script></li><li class="js-percentile-work_34949442 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 34949442; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_34949442"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_34949442 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="34949442"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 34949442; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=34949442]").text(description); $(".js-view-count-work_34949442").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_34949442").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="34949442"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">3</a> </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="99629" href="https://www.academia.edu/Documents/in/Evapotranspiration">Evapotranspiration</a>, <script data-card-contents-for-ri="99629" type="text/json">{"id":99629,"name":"Evapotranspiration","url":"https://www.academia.edu/Documents/in/Evapotranspiration?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="318480" href="https://www.academia.edu/Documents/in/Agricultural_Water_Use">Agricultural Water Use</a><script data-card-contents-for-ri="318480" type="text/json">{"id":318480,"name":"Agricultural Water Use","url":"https://www.academia.edu/Documents/in/Agricultural_Water_Use?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=34949442]'), work: {"id":34949442,"title":"Evapotranspiration and water source of a tropical rainforest in peninsular Malaysia","created_at":"2017-10-24T18:53:51.053-07:00","url":"https://www.academia.edu/34949442/Evapotranspiration_and_water_source_of_a_tropical_rainforest_in_peninsular_Malaysia?f_ri=7941","dom_id":"work_34949442","summary":"To evaluate water use and the supporting water source of a tropical rainforest, a 4‐year assessment of evapotranspiration (ET) was conducted in Pasoh Forest Reserve, a lowland dipterocarp forest in Peninsular Malaysia. The eddy covariance method and isotope signals of rain, plant, soil, and stream waters were used to determine forest water sources under different moisture conditions. Four sampling events were conducted to collect soil and plant twig samples in wet, moderate , dry, and very dry conditions for the identification of isotopic signals. Annual ET from 2012 to 2015 was quite stable with an average of 1,182 ± 26 mm, and a substantial daily ET was observed even during drought periods, although some decline was observed, corresponding with volumet-ric soil water content. During the wet period, water for ET was supplied from the surface soil layer between 0 and 0.5 m, whereas in the dry period, approximately 50% to 90% was supplied from the deeper soil layer below 0.5‐m depth, originating from water precipitated several months previously at this forest. Isotope signatures demonstrated that the water sources of the plants, soil, and stream were all different. Water in plants was often different from soil water, probably because plant water came from a different source than water that was strongly bound to the soil particles. Plants showed no preference for soil depth with their size, whereas the existence of storage water in the xylem was suggested. The evapotranspiration at this forest is balanced and maintained using most of the available water sources except for a proportion of rapid response run‐off.","downloadable_attachments":[{"id":54811696,"asset_id":34949442,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":50213028,"first_name":"Marryanna","last_name":"Lion","domain_name":"frim","page_name":"MarryannaLion","display_name":"Marryanna Lion","profile_url":"https://frim.academia.edu/MarryannaLion?f_ri=7941","photo":"https://0.academia-photos.com/50213028/19755473/19601876/s65_marryanna.lion.jpg"}],"research_interests":[{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":99629,"name":"Evapotranspiration","url":"https://www.academia.edu/Documents/in/Evapotranspiration?f_ri=7941","nofollow":false},{"id":318480,"name":"Agricultural Water Use","url":"https://www.academia.edu/Documents/in/Agricultural_Water_Use?f_ri=7941","nofollow":false}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_18973127 coauthored" data-work_id="18973127" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/18973127/New_archaeoichthyological_data_from_the_settlement_at_D%C4%85bki">New archaeoichthyological data from the settlement at Dąbki</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">This article presents the results of the analyses of fish remains from Dąbki, site 9, situated on the western part of the Polish Baltic coastline. Most samples were excavated from an inshore refuse layer in the peat bog, while some other... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_18973127" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">This article presents the results of the analyses of fish remains from Dąbki, site 9, situated on the western part of the Polish Baltic coastline. Most samples were excavated from an inshore refuse layer in the peat bog, while some other samples come from a Stone Age settlement located at the shore of the former lake (silted up and overgrown). A total of 18 ichthyological taxa were identified (15 freshwater and 3 migratory). The study showed that, despite the site’s relatively close proximity to the seashore, the fishing economy had a local character and was probably concentrated on the fresh and brackish waters of the nearest lakes and rivers.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/18973127" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="3327ffa551219c41bb2a97c2a225b30c" rel="nofollow" data-download="{"attachment_id":53828396,"asset_id":18973127,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/53828396/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="333909" href="https://york.academia.edu/HarryRobson">Harry K Robson</a><script data-card-contents-for-user="333909" type="text/json">{"id":333909,"first_name":"Harry","last_name":"Robson","domain_name":"york","page_name":"HarryRobson","display_name":"Harry K Robson","profile_url":"https://york.academia.edu/HarryRobson?f_ri=7941","photo":"https://0.academia-photos.com/333909/94998/20333328/s65_harry.robson.jpeg"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-18973127">+1</span><div class="hidden js-additional-users-18973127"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://independent.academia.edu/MZabilska">Mirosława Zabilska</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-18973127'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-18973127').html(); } } new HoverPopover(popoverSettings); })();</script></li><li class="js-paper-rank-work_18973127 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="18973127"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 18973127, container: ".js-paper-rank-work_18973127", }); });</script></li><li class="js-percentile-work_18973127 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 18973127; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_18973127"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_18973127 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="18973127"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 18973127; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=18973127]").text(description); $(".js-view-count-work_18973127").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_18973127").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="18973127"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">11</a> </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="392" href="https://www.academia.edu/Documents/in/Archaeology">Archaeology</a>, <script data-card-contents-for-ri="392" type="text/json">{"id":392,"name":"Archaeology","url":"https://www.academia.edu/Documents/in/Archaeology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="399" href="https://www.academia.edu/Documents/in/Prehistoric_Archaeology">Prehistoric Archaeology</a>, <script data-card-contents-for-ri="399" type="text/json">{"id":399,"name":"Prehistoric Archaeology","url":"https://www.academia.edu/Documents/in/Prehistoric_Archaeology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="1421" href="https://www.academia.edu/Documents/in/Stable_isotope_ecology">Stable isotope ecology</a>, <script data-card-contents-for-ri="1421" type="text/json">{"id":1421,"name":"Stable isotope ecology","url":"https://www.academia.edu/Documents/in/Stable_isotope_ecology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="1703" href="https://www.academia.edu/Documents/in/Stable_Isotope_Analysis">Stable Isotope Analysis</a><script data-card-contents-for-ri="1703" type="text/json">{"id":1703,"name":"Stable Isotope Analysis","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Analysis?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=18973127]'), work: {"id":18973127,"title":"New archaeoichthyological data from the settlement at Dąbki","created_at":"2015-11-25T02:11:12.708-08:00","url":"https://www.academia.edu/18973127/New_archaeoichthyological_data_from_the_settlement_at_D%C4%85bki?f_ri=7941","dom_id":"work_18973127","summary":"This article presents the results of the analyses of fish remains from Dąbki, site 9, situated on the western part of the Polish Baltic coastline. Most samples were excavated from an inshore refuse layer in the peat bog, while some other samples come from a Stone Age settlement located at the shore of the former lake (silted up and overgrown). A total of 18 ichthyological taxa were identified (15 freshwater and 3 migratory). The study showed that, despite the site’s relatively close proximity to the seashore, the fishing economy had a local character and was probably concentrated on the fresh and brackish waters of the nearest lakes and rivers.","downloadable_attachments":[{"id":53828396,"asset_id":18973127,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":333909,"first_name":"Harry","last_name":"Robson","domain_name":"york","page_name":"HarryRobson","display_name":"Harry K Robson","profile_url":"https://york.academia.edu/HarryRobson?f_ri=7941","photo":"https://0.academia-photos.com/333909/94998/20333328/s65_harry.robson.jpeg"},{"id":66490458,"first_name":"Mirosława","last_name":"Zabilska","domain_name":"independent","page_name":"MZabilska","display_name":"Mirosława Zabilska","profile_url":"https://independent.academia.edu/MZabilska?f_ri=7941","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":392,"name":"Archaeology","url":"https://www.academia.edu/Documents/in/Archaeology?f_ri=7941","nofollow":false},{"id":399,"name":"Prehistoric Archaeology","url":"https://www.academia.edu/Documents/in/Prehistoric_Archaeology?f_ri=7941","nofollow":false},{"id":1421,"name":"Stable isotope ecology","url":"https://www.academia.edu/Documents/in/Stable_isotope_ecology?f_ri=7941","nofollow":false},{"id":1703,"name":"Stable Isotope Analysis","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Analysis?f_ri=7941","nofollow":false},{"id":4997,"name":"Mesolithic Archaeology","url":"https://www.academia.edu/Documents/in/Mesolithic_Archaeology?f_ri=7941"},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941"},{"id":26089,"name":"Mesolithic Europe","url":"https://www.academia.edu/Documents/in/Mesolithic_Europe?f_ri=7941"},{"id":30976,"name":"Mesolithic/Neolithic","url":"https://www.academia.edu/Documents/in/Mesolithic_Neolithic?f_ri=7941"},{"id":114083,"name":"Mesolithic-Neolithic transition","url":"https://www.academia.edu/Documents/in/Mesolithic-Neolithic_transition?f_ri=7941"},{"id":433675,"name":"Archaeoichtyology","url":"https://www.academia.edu/Documents/in/Archaeoichtyology?f_ri=7941"},{"id":722051,"name":"Ichyology","url":"https://www.academia.edu/Documents/in/Ichyology?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_30988482 coauthored" data-work_id="30988482" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/30988482/Oxygen_and_sulphur_isotope_compositions_as_indicators_of_the_origin_of_Mesozoic_and_Cenozoic_evaporites_from_Spain">Oxygen and sulphur isotope compositions as indicators of the origin of Mesozoic and Cenozoic evaporites from Spain</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/30988482" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="78dabeb8f8622f5914f43d51c73eeeab" rel="nofollow" data-download="{"attachment_id":51420740,"asset_id":30988482,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/51420740/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="58842581" href="https://independent.academia.edu/UtrillaR">R. Utrilla</a><script data-card-contents-for-user="58842581" type="text/json">{"id":58842581,"first_name":"R.","last_name":"Utrilla","domain_name":"independent","page_name":"UtrillaR","display_name":"R. Utrilla","profile_url":"https://independent.academia.edu/UtrillaR?f_ri=7941","photo":"/images/s65_no_pic.png"}</script></span></span><span class="u-displayInlineBlock InlineList-item-text"> and <span class="u-textDecorationUnderline u-clickable InlineList-item-text js-work-more-authors-30988482">+1</span><div class="hidden js-additional-users-30988482"><div><span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a href="https://independent.academia.edu/PierreCatherine">Catherine Pierre</a></span></div></div></span><script>(function(){ var popoverSettings = { el: $('.js-work-more-authors-30988482'), placement: 'bottom', hide_delay: 200, html: true, content: function(){ return $('.js-additional-users-30988482').html(); } } new HoverPopover(popoverSettings); })();</script></li><li class="js-paper-rank-work_30988482 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="30988482"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 30988482, container: ".js-paper-rank-work_30988482", }); });</script></li><li class="js-percentile-work_30988482 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span class="u-mr2x percentile-widget" style="display: none">•</span><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 30988482; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-percentile-work_30988482"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></li><li class="js-view-count-work_30988482 InlineList-item InlineList-item--bordered hidden"><div><span><span class="js-view-count view-count u-mr2x" data-work-id="30988482"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 30988482; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=30988482]").text(description); $(".js-view-count-work_30988482").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_30988482").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="30988482"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">12</a> </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="406" href="https://www.academia.edu/Documents/in/Geology">Geology</a>, <script data-card-contents-for-ri="406" type="text/json">{"id":406,"name":"Geology","url":"https://www.academia.edu/Documents/in/Geology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="407" href="https://www.academia.edu/Documents/in/Geochemistry">Geochemistry</a>, <script data-card-contents-for-ri="407" type="text/json">{"id":407,"name":"Geochemistry","url":"https://www.academia.edu/Documents/in/Geochemistry?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="16024" href="https://www.academia.edu/Documents/in/Chemical_Geology">Chemical Geology</a><script data-card-contents-for-ri="16024" type="text/json">{"id":16024,"name":"Chemical Geology","url":"https://www.academia.edu/Documents/in/Chemical_Geology?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=30988482]'), work: {"id":30988482,"title":"Oxygen and sulphur isotope compositions as indicators of the origin of Mesozoic and Cenozoic evaporites from Spain","created_at":"2017-01-18T22:39:41.423-08:00","url":"https://www.academia.edu/30988482/Oxygen_and_sulphur_isotope_compositions_as_indicators_of_the_origin_of_Mesozoic_and_Cenozoic_evaporites_from_Spain?f_ri=7941","dom_id":"work_30988482","summary":null,"downloadable_attachments":[{"id":51420740,"asset_id":30988482,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":58842581,"first_name":"R.","last_name":"Utrilla","domain_name":"independent","page_name":"UtrillaR","display_name":"R. Utrilla","profile_url":"https://independent.academia.edu/UtrillaR?f_ri=7941","photo":"/images/s65_no_pic.png"},{"id":59115026,"first_name":"Catherine","last_name":"Pierre","domain_name":"independent","page_name":"PierreCatherine","display_name":"Catherine Pierre","profile_url":"https://independent.academia.edu/PierreCatherine?f_ri=7941","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":406,"name":"Geology","url":"https://www.academia.edu/Documents/in/Geology?f_ri=7941","nofollow":false},{"id":407,"name":"Geochemistry","url":"https://www.academia.edu/Documents/in/Geochemistry?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":16024,"name":"Chemical Geology","url":"https://www.academia.edu/Documents/in/Chemical_Geology?f_ri=7941","nofollow":false},{"id":26376,"name":"Sedimentary Basins","url":"https://www.academia.edu/Documents/in/Sedimentary_Basins?f_ri=7941"},{"id":70354,"name":"Mesozoic","url":"https://www.academia.edu/Documents/in/Mesozoic?f_ri=7941"},{"id":83556,"name":"Evaporites","url":"https://www.academia.edu/Documents/in/Evaporites?f_ri=7941"},{"id":113903,"name":"Bacteria","url":"https://www.academia.edu/Documents/in/Bacteria?f_ri=7941"},{"id":172734,"name":"Tertiary","url":"https://www.academia.edu/Documents/in/Tertiary?f_ri=7941"},{"id":184683,"name":"Reduction","url":"https://www.academia.edu/Documents/in/Reduction?f_ri=7941"},{"id":834417,"name":"Evaporite","url":"https://www.academia.edu/Documents/in/Evaporite?f_ri=7941"},{"id":976620,"name":"Sedimentary Rocks","url":"https://www.academia.edu/Documents/in/Sedimentary_Rocks?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_2544528" data-work_id="2544528" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/2544528/Effect_of_parasitoids_seed_predators_and_ant_mutualists_on_fruiting_success_and_germination_of_Acacia_drepanolobium_in_Kenya">Effect of parasitoids, seed‐predators and ant‐mutualists on fruiting success and germination of Acacia drepanolobium in Kenya</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/2544528" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="27ce9283fddcf98947eba3b3fe2aba31" rel="nofollow" data-download="{"attachment_id":30558452,"asset_id":2544528,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/30558452/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="3305280" href="https://harvard.academia.edu/DinoMartins">Dino Martins</a><script data-card-contents-for-user="3305280" type="text/json">{"id":3305280,"first_name":"Dino","last_name":"Martins","domain_name":"harvard","page_name":"DinoMartins","display_name":"Dino Martins","profile_url":"https://harvard.academia.edu/DinoMartins?f_ri=7941","photo":"https://0.academia-photos.com/3305280/1100933/1372925/s65_dino.martins.jpg"}</script></span></span></li><li class="js-paper-rank-work_2544528 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="2544528"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 2544528, container: ".js-paper-rank-work_2544528", }); 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Viagra® contains the active pharmaceutical... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_25260086" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Viagra® manufactured by Pfizer was the first prescription drug for the treatment of erectile dysfunction (ED), a condition that is estimated to affect 1 in 10 men at some stage in their lives. Viagra® contains the active pharmaceutical ingredient (API) sildenafil, as the citrate salt. Sildenafil, along with Tadalafil and Vardenafil belong to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors.<br />Since its first production in 1998, Viagra® has generated well in excess of $10 billion US dollars in sales and with Pfizers’ patent extended to April 2020 (3) it still remains the only sildenafil-based treatment option for sufferers of ED in the US. There are no legal ‘generic-Viagra’ formulations available in the US. However, formulations containing sildenafil citrate as API are widely available over the internet and often sold as ‘generic<br />Viagra’. These cheaper alternatives are often manufactured under less than ideal conditions with little or no QA/QC procedures in place.<br />The World Health Organisation recognised the scale of the problem in its 2010 bulletin “Growing threat from counterfeit medicines” (4) and quotes a Dutch study cited in the International Journal of Clinical Practice in which from a cohort of 370 seized Viagra® samples, only 10 were genuine.<br />We sourced a variety of tablets sold for the treatment of ED which claimed to have sildenafil citrate as API. Viagra®, ‘generic-Viagra’, Kamagra, Silagra and Filagra tablets were ordered via the internet and supplied from both UK-based pharmacies as well as overseas suppliers (Hong Kong, India, Vanuata).<br />In this small-scale pilot study, we present results from bulk 2H/18O and 13C/15N stable isotope analysis performed on crushed tablets from 23 samples of internet-sourced tablets sold for the treatment of ED and purported to contain sildenafil citrate as API.<br />Geophysical Research Abstracts, 15, EGU2013-2248.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/25260086" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="b0721bd198191f2c3264d7c74bfb112a" rel="nofollow" data-download="{"attachment_id":45565040,"asset_id":25260086,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/45565040/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="32546" href="https://rgu.academia.edu/WolframMeierAugenstein">Wolfram Meier-Augenstein</a><script data-card-contents-for-user="32546" type="text/json">{"id":32546,"first_name":"Wolfram","last_name":"Meier-Augenstein","domain_name":"rgu","page_name":"WolframMeierAugenstein","display_name":"Wolfram Meier-Augenstein","profile_url":"https://rgu.academia.edu/WolframMeierAugenstein?f_ri=7941","photo":"https://0.academia-photos.com/32546/10537/9922/s65_wolfram.meier-augenstein.jpg"}</script></span></span></li><li class="js-paper-rank-work_25260086 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="25260086"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 25260086, container: ".js-paper-rank-work_25260086", }); 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$(".js-view-count[data-work-id=25260086]").text(description); $(".js-view-count-work_25260086").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_25260086").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="25260086"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">6</a> </div><span class="InlineList-item-text u-textTruncate u-pl9x"><a class="InlineList-item-text" data-has-card-for-ri="1588" href="https://www.academia.edu/Documents/in/Forensic_Science">Forensic Science</a>, <script data-card-contents-for-ri="1588" type="text/json">{"id":1588,"name":"Forensic Science","url":"https://www.academia.edu/Documents/in/Forensic_Science?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="1703" href="https://www.academia.edu/Documents/in/Stable_Isotope_Analysis">Stable Isotope Analysis</a>, <script data-card-contents-for-ri="1703" type="text/json">{"id":1703,"name":"Stable Isotope Analysis","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Analysis?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7956" href="https://www.academia.edu/Documents/in/Stable_Isotope_Forensics">Stable Isotope Forensics</a><script data-card-contents-for-ri="7956" type="text/json">{"id":7956,"name":"Stable Isotope Forensics","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Forensics?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=25260086]'), work: {"id":25260086,"title":"Stable Isotope Profiling of Internet Sourced Viagra® and generic-Viagra Tablets","created_at":"2016-05-12T02:21:02.122-07:00","url":"https://www.academia.edu/25260086/Stable_Isotope_Profiling_of_Internet_Sourced_Viagra_and_generic_Viagra_Tablets?f_ri=7941","dom_id":"work_25260086","summary":"Viagra® manufactured by Pfizer was the first prescription drug for the treatment of erectile dysfunction (ED), a condition that is estimated to affect 1 in 10 men at some stage in their lives. Viagra® contains the active pharmaceutical ingredient (API) sildenafil, as the citrate salt. Sildenafil, along with Tadalafil and Vardenafil belong to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors.\nSince its first production in 1998, Viagra® has generated well in excess of $10 billion US dollars in sales and with Pfizers’ patent extended to April 2020 (3) it still remains the only sildenafil-based treatment option for sufferers of ED in the US. There are no legal ‘generic-Viagra’ formulations available in the US. However, formulations containing sildenafil citrate as API are widely available over the internet and often sold as ‘generic\nViagra’. These cheaper alternatives are often manufactured under less than ideal conditions with little or no QA/QC procedures in place.\nThe World Health Organisation recognised the scale of the problem in its 2010 bulletin “Growing threat from counterfeit medicines” (4) and quotes a Dutch study cited in the International Journal of Clinical Practice in which from a cohort of 370 seized Viagra® samples, only 10 were genuine.\nWe sourced a variety of tablets sold for the treatment of ED which claimed to have sildenafil citrate as API. Viagra®, ‘generic-Viagra’, Kamagra, Silagra and Filagra tablets were ordered via the internet and supplied from both UK-based pharmacies as well as overseas suppliers (Hong Kong, India, Vanuata).\nIn this small-scale pilot study, we present results from bulk 2H/18O and 13C/15N stable isotope analysis performed on crushed tablets from 23 samples of internet-sourced tablets sold for the treatment of ED and purported to contain sildenafil citrate as API.\nGeophysical Research Abstracts, 15, EGU2013-2248.","downloadable_attachments":[{"id":45565040,"asset_id":25260086,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":32546,"first_name":"Wolfram","last_name":"Meier-Augenstein","domain_name":"rgu","page_name":"WolframMeierAugenstein","display_name":"Wolfram 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Tingey","profile_url":"https://independent.academia.edu/DTingey?f_ri=7941","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":406,"name":"Geology","url":"https://www.academia.edu/Documents/in/Geology?f_ri=7941","nofollow":false},{"id":411,"name":"Hydrogeology","url":"https://www.academia.edu/Documents/in/Hydrogeology?f_ri=7941","nofollow":false},{"id":2549,"name":"Hydrology","url":"https://www.academia.edu/Documents/in/Hydrology?f_ri=7941","nofollow":false},{"id":6951,"name":"Groundwater","url":"https://www.academia.edu/Documents/in/Groundwater?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941"},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary?f_ri=7941"},{"id":42811,"name":"Mixing","url":"https://www.academia.edu/Documents/in/Mixing?f_ri=7941"},{"id":91257,"name":"Stable Isotope","url":"https://www.academia.edu/Documents/in/Stable_Isotope?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_45673253" data-work_id="45673253" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/45673253/Compound_specific_d2H_and_d13C_values_of_n_alkanes_as_a_tool_to_unravel_complex_petroleum_mixtures_in_the_South_Viking_Graben_Norway">Compound-specific d2H and d13C values of n-alkanes as a tool to unravel complex petroleum mixtures in the South Viking Graben, Norway</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">In order to resolve oil mixtures and for oil-source correlation purposes, both hydrogen (d2H) and carbon isotope compositions (d13C) of n-alkanes and acyclic isoprenoid alkanes have been determined in petroleum mixtures and extracts from... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_45673253" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">In order to resolve oil mixtures and for oil-source correlation purposes, both hydrogen (d2H) and carbon isotope compositions (d13C) of n-alkanes and acyclic isoprenoid alkanes have been determined in petroleum mixtures and extracts from Jurassic source rocks of distinct organic matter type, depositional setting and lithology in the South Viking Graben, Norway. d2H values vary from -80 to -140‰ for n-alkanes and from -130 to -165‰ for pristane (Pr) and phytane (Ph) in oil and condensate samples. At the same maturity level, in the main oil generative window, individual n-alkanes from most oils and condensates show a 2H-enrichment with n-alkane chain length by 15 to 50‰. With the increase in the estimated input of hydrocarbons from terrigenous source material to petroleum mixtures, the n-alkanes (>C20) exhibit a higher 2 H-enrichment while n-alkanes (C10-C14) show a higher 13C-enrichment. d2H values of n-alkanes (>C20) are useful to discriminate mixed oils that were not well differentiated by d13C data. d2H values of individual n-alkanes from oils suggest a possible exchange of C-bound H with other hydrogen during their generation from precursor molecules. We find that d2H values of n-alkanes from Jurassic source rock extracts, at the onset of oil generation, were mainly controlled by the isotopic composition of biosyn-thetic precursors and varied from -100 to -150‰. Combination of carbon and hydrogen isotope compositions of n-alkanes proved to be a useful tool to discriminate Jurassic petroleum mixtures from distinct sources in the Norwegian South Viking Graben.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/45673253" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="d7fc4831dcf6586d56374eb58f68201e" rel="nofollow" data-download="{"attachment_id":66174333,"asset_id":45673253,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/66174333/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="142604201" href="https://gfz-potsdam.academia.edu/WendyAMurillo">Wendy A . 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At the same maturity level, in the main oil generative window, individual n-alkanes from most oils and condensates show a 2H-enrichment with n-alkane chain length by 15 to 50‰. With the increase in the estimated input of hydrocarbons from terrigenous source material to petroleum mixtures, the n-alkanes (\u003eC20) exhibit a higher 2 H-enrichment while n-alkanes (C10-C14) show a higher 13C-enrichment. d2H values of n-alkanes (\u003eC20) are useful to discriminate mixed oils that were not well differentiated by d13C data. d2H values of individual n-alkanes from oils suggest a possible exchange of C-bound H with other hydrogen during their generation from precursor molecules. We find that d2H values of n-alkanes from Jurassic source rock extracts, at the onset of oil generation, were mainly controlled by the isotopic composition of biosyn-thetic precursors and varied from -100 to -150‰. Combination of carbon and hydrogen isotope compositions of n-alkanes proved to be a useful tool to discriminate Jurassic petroleum mixtures from distinct sources in the Norwegian South Viking Graben.","downloadable_attachments":[{"id":66174333,"asset_id":45673253,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":142604201,"first_name":"Wendy","last_name":"Murillo","domain_name":"gfz-potsdam","page_name":"WendyAMurillo","display_name":"Wendy A . 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We integrate 2500 years of stable isotope (δ34S, δ13C, and δ15N) and zooarchaeological evidence from Gulf of Mexico fisheries to assess cultural, demographic, and technological changes affecting sheepshead (Archosargus probatocephalus) populations and fishing practices in Louisiana, USA. Concurrent with human population growth, average sizes of sheepshead caught decreased from the 1720s to 1830s. The size of fish caught after the 1830s increased to pre-1720 levels at the same time that isotopic compositions of fish bone collagen show that fish were being caught from a more diverse range of ecosystems, including distant seagrass beds. Our findings provide the first evidence for large-scale depressions of historical sheepshead populations and the p...</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/79141182" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="0e79081d6a13d4ade04b2ad7929a6377" rel="nofollow" data-download="{"attachment_id":85960987,"asset_id":79141182,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/85960987/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="5452329" href="https://indiana.academia.edu/RyanKennedy">Ryan Kennedy</a><script data-card-contents-for-user="5452329" type="text/json">{"id":5452329,"first_name":"Ryan","last_name":"Kennedy","domain_name":"indiana","page_name":"RyanKennedy","display_name":"Ryan Kennedy","profile_url":"https://indiana.academia.edu/RyanKennedy?f_ri=7941","photo":"https://0.academia-photos.com/5452329/9868861/20694056/s65_ryan.kennedy.jpg"}</script></span></span></li><li class="js-paper-rank-work_79141182 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="79141182"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 79141182, container: ".js-paper-rank-work_79141182", }); 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We integrate 2500 years of stable isotope (δ34S, δ13C, and δ15N) and zooarchaeological evidence from Gulf of Mexico fisheries to assess cultural, demographic, and technological changes affecting sheepshead (Archosargus probatocephalus) populations and fishing practices in Louisiana, USA. Concurrent with human population growth, average sizes of sheepshead caught decreased from the 1720s to 1830s. The size of fish caught after the 1830s increased to pre-1720 levels at the same time that isotopic compositions of fish bone collagen show that fish were being caught from a more diverse range of ecosystems, including distant seagrass beds. Our findings provide the first evidence for large-scale depressions of historical sheepshead populations and the p...","downloadable_attachments":[{"id":85960987,"asset_id":79141182,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":5452329,"first_name":"Ryan","last_name":"Kennedy","domain_name":"indiana","page_name":"RyanKennedy","display_name":"Ryan Kennedy","profile_url":"https://indiana.academia.edu/RyanKennedy?f_ri=7941","photo":"https://0.academia-photos.com/5452329/9868861/20694056/s65_ryan.kennedy.jpg"}],"research_interests":[{"id":958,"name":"Historical Archaeology","url":"https://www.academia.edu/Documents/in/Historical_Archaeology?f_ri=7941","nofollow":false},{"id":1624,"name":"Zooarchaeology","url":"https://www.academia.edu/Documents/in/Zooarchaeology?f_ri=7941","nofollow":false},{"id":1703,"name":"Stable Isotope Analysis","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Analysis?f_ri=7941","nofollow":false},{"id":2939,"name":"Fish Remains (Zooarchaeology)","url":"https://www.academia.edu/Documents/in/Fish_Remains_Zooarchaeology_?f_ri=7941","nofollow":false},{"id":4711,"name":"Fisheries","url":"https://www.academia.edu/Documents/in/Fisheries?f_ri=7941"},{"id":6779,"name":"Science","url":"https://www.academia.edu/Documents/in/Science?f_ri=7941"},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941"},{"id":22435,"name":"Fish Ecology","url":"https://www.academia.edu/Documents/in/Fish_Ecology?f_ri=7941"},{"id":26327,"name":"Medicine","url":"https://www.academia.edu/Documents/in/Medicine?f_ri=7941"},{"id":29924,"name":"New Orleans","url":"https://www.academia.edu/Documents/in/New_Orleans?f_ri=7941"},{"id":71627,"name":"Overfishing","url":"https://www.academia.edu/Documents/in/Overfishing?f_ri=7941"},{"id":173285,"name":"Fishery","url":"https://www.academia.edu/Documents/in/Fishery?f_ri=7941"},{"id":241558,"name":"Gulf of Mexico","url":"https://www.academia.edu/Documents/in/Gulf_of_Mexico?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_47727433" data-work_id="47727433" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/47727433/Origin_of_Massive_Dolomite_Leg_143_Hole_866A_Resolution_Guyot_Mid_Pacific_Mountains">Origin of Massive Dolomite, Leg 143, Hole 866A, Resolution Guyot, Mid-Pacific Mountains</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/47727433" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="5578377cf28afa9dae3b3472215e2832" rel="nofollow" data-download="{"attachment_id":66674540,"asset_id":47727433,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/66674540/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="33686824" href="https://uow.academia.edu/AChivas">A. 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Ecology","url":"https://www.academia.edu/Documents/in/Benthic_Invertebrate_Ecology?f_ri=7941"},{"id":1660211,"name":"Food Web structure","url":"https://www.academia.edu/Documents/in/Food_Web_structure?f_ri=7941"},{"id":1833948,"name":"Playa","url":"https://www.academia.edu/Documents/in/Playa?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_29392509" data-work_id="29392509" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/29392509/B%C4%83descu_et_al_2016_A_novel_fecal_stable_isotope_approach_to_determine_the_timing_of_age_related_feeding_transitions_in_wild_infant_chimpanzees">Bădescu et al. (2016) A novel fecal stable isotope approach to determine the timing of age-related feeding transitions in wild infant chimpanzees</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Objectives: Determining nutritional development in wild primates is difficult through observations because confirming dietary intake is challenging. Physiological measures are needed to determine the relative contributions of maternal... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_29392509" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Objectives: Determining nutritional development in wild primates is difficult through observations because confirming dietary intake is challenging. Physiological measures are needed to determine the relative contributions of maternal milk and other foods at different ages, and time of weaning. We used fecal stable carbon and nitrogen isotopes (d 13 C, d 15 N) and fecal nitrogen concentrations (%N) from wild chimpanzees at Ngogo, Uganda, to derive physiological dietary indicators during the transition from total reliance on maternal milk to adult foods after weaning. Materials and Methods: We analyzed 560 fecal samples collected non-invasively from 48 infants, their mothers, and 6 juvenile siblings. Most infant and juvenile samples (90%) were matched to samples collected from mothers on the same day. Isotopic assessments were compared with observations of nursing and feeding.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/29392509" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="1f079fe6b99556f0895a05423ed05176" rel="nofollow" data-download="{"attachment_id":49833441,"asset_id":29392509,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/49833441/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="468363" href="https://umontreal.academia.edu/IuliaB%C4%83descu">Iulia Bădescu</a><script data-card-contents-for-user="468363" type="text/json">{"id":468363,"first_name":"Iulia","last_name":"Bădescu","domain_name":"umontreal","page_name":"IuliaBădescu","display_name":"Iulia Bădescu","profile_url":"https://umontreal.academia.edu/IuliaB%C4%83descu?f_ri=7941","photo":"https://0.academia-photos.com/468363/155804/12481597/s65_iulia.b_descu.jpg"}</script></span></span></li><li class="js-paper-rank-work_29392509 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="29392509"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 29392509, container: ".js-paper-rank-work_29392509", }); 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(2016) A novel fecal stable isotope approach to determine the timing of age-related feeding transitions in wild infant chimpanzees","created_at":"2016-10-24T06:44:36.933-07:00","url":"https://www.academia.edu/29392509/B%C4%83descu_et_al_2016_A_novel_fecal_stable_isotope_approach_to_determine_the_timing_of_age_related_feeding_transitions_in_wild_infant_chimpanzees?f_ri=7941","dom_id":"work_29392509","summary":"Objectives: Determining nutritional development in wild primates is difficult through observations because confirming dietary intake is challenging. Physiological measures are needed to determine the relative contributions of maternal milk and other foods at different ages, and time of weaning. We used fecal stable carbon and nitrogen isotopes (d 13 C, d 15 N) and fecal nitrogen concentrations (%N) from wild chimpanzees at Ngogo, Uganda, to derive physiological dietary indicators during the transition from total reliance on maternal milk to adult foods after weaning. Materials and Methods: We analyzed 560 fecal samples collected non-invasively from 48 infants, their mothers, and 6 juvenile siblings. Most infant and juvenile samples (90%) were matched to samples collected from mothers on the same day. Isotopic assessments were compared with observations of nursing and feeding.","downloadable_attachments":[{"id":49833441,"asset_id":29392509,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":468363,"first_name":"Iulia","last_name":"Bădescu","domain_name":"umontreal","page_name":"IuliaBădescu","display_name":"Iulia Bădescu","profile_url":"https://umontreal.academia.edu/IuliaB%C4%83descu?f_ri=7941","photo":"https://0.academia-photos.com/468363/155804/12481597/s65_iulia.b_descu.jpg"}],"research_interests":[{"id":155,"name":"Evolutionary Biology","url":"https://www.academia.edu/Documents/in/Evolutionary_Biology?f_ri=7941","nofollow":false},{"id":588,"name":"Nursing","url":"https://www.academia.edu/Documents/in/Nursing?f_ri=7941","nofollow":false},{"id":767,"name":"Anthropology","url":"https://www.academia.edu/Documents/in/Anthropology?f_ri=7941","nofollow":false},{"id":768,"name":"Biological Anthropology","url":"https://www.academia.edu/Documents/in/Biological_Anthropology?f_ri=7941","nofollow":false},{"id":1421,"name":"Stable isotope ecology","url":"https://www.academia.edu/Documents/in/Stable_isotope_ecology?f_ri=7941"},{"id":1703,"name":"Stable Isotope Analysis","url":"https://www.academia.edu/Documents/in/Stable_Isotope_Analysis?f_ri=7941"},{"id":2069,"name":"Primatology","url":"https://www.academia.edu/Documents/in/Primatology?f_ri=7941"},{"id":2749,"name":"Animal Behavior","url":"https://www.academia.edu/Documents/in/Animal_Behavior?f_ri=7941"},{"id":7610,"name":"Evolutionary Anthropology","url":"https://www.academia.edu/Documents/in/Evolutionary_Anthropology?f_ri=7941"},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941"},{"id":25730,"name":"Behavioral Ecology","url":"https://www.academia.edu/Documents/in/Behavioral_Ecology?f_ri=7941"},{"id":38359,"name":"Maternal and Child Nutrition","url":"https://www.academia.edu/Documents/in/Maternal_and_Child_Nutrition?f_ri=7941"},{"id":64458,"name":"Chimpanzees","url":"https://www.academia.edu/Documents/in/Chimpanzees?f_ri=7941"},{"id":70489,"name":"Infant nutrition","url":"https://www.academia.edu/Documents/in/Infant_nutrition?f_ri=7941"},{"id":95842,"name":"Ecology and Evolutionary Biology","url":"https://www.academia.edu/Documents/in/Ecology_and_Evolutionary_Biology-1?f_ri=7941"},{"id":120582,"name":"Infant Development","url":"https://www.academia.edu/Documents/in/Infant_Development?f_ri=7941"},{"id":134346,"name":"Infant","url":"https://www.academia.edu/Documents/in/Infant?f_ri=7941"},{"id":223727,"name":"Infant weaning","url":"https://www.academia.edu/Documents/in/Infant_weaning?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_6538447" data-work_id="6538447" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/6538447/Has_the_invasive_round_goby_caused_new_links_in_Baltic_food_webs">Has the invasive round goby caused new links in Baltic food webs</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">The Ponto-Caspian round goby (Neogobius melanostomus, Pallas 1814) most probably was established in the Gulf of Gdańsk, Baltic Sea, in the late 1980’s and has since become one of the dominant species in the region. In this study we assess... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_6538447" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">The Ponto-Caspian round goby (Neogobius melanostomus, Pallas 1814) most probably was established in the Gulf of Gdańsk, Baltic Sea, in the late 1980’s and has since become one of the dominant species in the region. In this study we assess the role of round gobies as prey for two important fish species in the Gulf of Gdańsk, cod (Gadus morhua) and perch (Perca fluviatilis). We compared their present diet with stomach analyses from the area prior the round goby establishment, as well as with diet analysis from Baltic regions where round gobies are absent. There were large differences in the diet between cods from the Gulf of Gdańsk 2003–2006 compared to cods in earlier studies (1977–1981) from the Southern Baltic Sea. There were also large differences in cod and perch diets from areas with and without round goby. Presently, round goby constitutes the most important prey for medium sized cods in Gulf of Gdańsk, and perch from the same area almost exclusively feed on gobiids. Stomach analysis, trophic level estimates, and stable isotope analyses all indicated that cod and perch in Gulf of Gdańsk after the round goby establishment belonged to a similar trophic level. Beside round goby, no mussel feeding fish contributed much to the diet of cod or at all to the diet of perch. Thus, it is likely that round gobies constitute a new energetic pathway from mussels to top predators. However, due to the short time elapsed after round goby establishment, we can only speculate on the species future impacts on Baltic food webs.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/6538447" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="2683d056ea462c781400d37aff74972d" rel="nofollow" data-download="{"attachment_id":48817815,"asset_id":6538447,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/48817815/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="10472831" href="https://independent.academia.edu/GustafAlmqvist">Gustaf Almqvist</a><script data-card-contents-for-user="10472831" type="text/json">{"id":10472831,"first_name":"Gustaf","last_name":"Almqvist","domain_name":"independent","page_name":"GustafAlmqvist","display_name":"Gustaf Almqvist","profile_url":"https://independent.academia.edu/GustafAlmqvist?f_ri=7941","photo":"https://0.academia-photos.com/10472831/11876408/13235339/s65_gustaf.almqvist.jpg_oh_d2517d577982c97595cf0086a7fb0596_oe_575ddc67"}</script></span></span></li><li class="js-paper-rank-work_6538447 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="6538447"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 6538447, container: ".js-paper-rank-work_6538447", }); 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$(".js-view-count[data-work-id=6538447]").text(description); $(".js-view-count-work_6538447").attr('title', description).tooltip(); }); });</script></span><script>$(function() { $(".js-view-count-work_6538447").removeClass('hidden') })</script></div></li><li class="InlineList-item u-positionRelative" style="max-width: 250px"><div class="u-positionAbsolute" data-has-card-for-ri-list="6538447"><i class="fa fa-tag InlineList-item-icon u-positionRelative"></i> <a class="InlineList-item-text u-positionRelative">17</a> </div><span class="InlineList-item-text u-textTruncate u-pl10x"><a class="InlineList-item-text" data-has-card-for-ri="173" href="https://www.academia.edu/Documents/in/Zoology">Zoology</a>, <script data-card-contents-for-ri="173" type="text/json">{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a>, <script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="9846" href="https://www.academia.edu/Documents/in/Ecology">Ecology</a>, <script data-card-contents-for-ri="9846" type="text/json">{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="47884" href="https://www.academia.edu/Documents/in/Biological_Sciences">Biological Sciences</a><script data-card-contents-for-ri="47884" type="text/json">{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=6538447]'), work: {"id":6538447,"title":"Has the invasive round goby caused new links in Baltic food webs","created_at":"2014-03-25T00:42:33.586-07:00","url":"https://www.academia.edu/6538447/Has_the_invasive_round_goby_caused_new_links_in_Baltic_food_webs?f_ri=7941","dom_id":"work_6538447","summary":"The Ponto-Caspian round goby (Neogobius melanostomus, Pallas 1814) most probably was established in the Gulf of Gdańsk, Baltic Sea, in the late 1980’s and has since become one of the dominant species in the region. In this study we assess the role of round gobies as prey for two important fish species in the Gulf of Gdańsk, cod (Gadus morhua) and perch (Perca fluviatilis). We compared their present diet with stomach analyses from the area prior the round goby establishment, as well as with diet analysis from Baltic regions where round gobies are absent. There were large differences in the diet between cods from the Gulf of Gdańsk 2003–2006 compared to cods in earlier studies (1977–1981) from the Southern Baltic Sea. There were also large differences in cod and perch diets from areas with and without round goby. Presently, round goby constitutes the most important prey for medium sized cods in Gulf of Gdańsk, and perch from the same area almost exclusively feed on gobiids. Stomach analysis, trophic level estimates, and stable isotope analyses all indicated that cod and perch in Gulf of Gdańsk after the round goby establishment belonged to a similar trophic level. Beside round goby, no mussel feeding fish contributed much to the diet of cod or at all to the diet of perch. Thus, it is likely that round gobies constitute a new energetic pathway from mussels to top predators. However, due to the short time elapsed after round goby establishment, we can only speculate on the species future impacts on Baltic food webs.","downloadable_attachments":[{"id":48817815,"asset_id":6538447,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":10472831,"first_name":"Gustaf","last_name":"Almqvist","domain_name":"independent","page_name":"GustafAlmqvist","display_name":"Gustaf Almqvist","profile_url":"https://independent.academia.edu/GustafAlmqvist?f_ri=7941","photo":"https://0.academia-photos.com/10472831/11876408/13235339/s65_gustaf.almqvist.jpg_oh_d2517d577982c97595cf0086a7fb0596_oe_575ddc67"}],"research_interests":[{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology?f_ri=7941","nofollow":false},{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology?f_ri=7941","nofollow":false},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences?f_ri=7941","nofollow":false},{"id":82682,"name":"Food web","url":"https://www.academia.edu/Documents/in/Food_web?f_ri=7941"},{"id":83087,"name":"Isotopes","url":"https://www.academia.edu/Documents/in/Isotopes?f_ri=7941"},{"id":91257,"name":"Stable Isotope","url":"https://www.academia.edu/Documents/in/Stable_Isotope?f_ri=7941"},{"id":97142,"name":"Environmental Biology","url":"https://www.academia.edu/Documents/in/Environmental_Biology?f_ri=7941"},{"id":112289,"name":"Gadus morhua","url":"https://www.academia.edu/Documents/in/Gadus_morhua?f_ri=7941"},{"id":154925,"name":"Trophic Level","url":"https://www.academia.edu/Documents/in/Trophic_Level?f_ri=7941"},{"id":170652,"name":"Fisheries Sciences","url":"https://www.academia.edu/Documents/in/Fisheries_Sciences?f_ri=7941"},{"id":361750,"name":"Isotope","url":"https://www.academia.edu/Documents/in/Isotope?f_ri=7941"},{"id":441046,"name":"Perca Fluviatilis","url":"https://www.academia.edu/Documents/in/Perca_Fluviatilis?f_ri=7941"},{"id":980672,"name":"Perch","url":"https://www.academia.edu/Documents/in/Perch?f_ri=7941"},{"id":1156235,"name":"Round Goby","url":"https://www.academia.edu/Documents/in/Round_Goby?f_ri=7941"},{"id":1575472,"name":"Trophic Levels","url":"https://www.academia.edu/Documents/in/Trophic_Levels?f_ri=7941"},{"id":1788086,"name":"Environmental biology of fishes","url":"https://www.academia.edu/Documents/in/Environmental_biology_of_fishes?f_ri=7941"}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x 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data-has-card-for-user="12439121" href="https://exxonmobil.academia.edu/CliffordWalters">Clifford Walters</a><script data-card-contents-for-user="12439121" type="text/json">{"id":12439121,"first_name":"Clifford","last_name":"Walters","domain_name":"exxonmobil","page_name":"CliffordWalters","display_name":"Clifford Walters","profile_url":"https://exxonmobil.academia.edu/CliffordWalters?f_ri=7941","photo":"/images/s65_no_pic.png"}</script></span></span></li><li class="js-paper-rank-work_7183831 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="7183831"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 7183831, container: ".js-paper-rank-work_7183831", }); });</script></li><li class="js-percentile-work_7183831 InlineList-item InlineList-item--bordered hidden u-tcGrayDark"><span class="percentile-widget hidden"><span 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href="https://www.academia.edu/Documents/in/Organic_Geochemistry">Organic Geochemistry</a>, <script data-card-contents-for-ri="4580" type="text/json">{"id":4580,"name":"Organic Geochemistry","url":"https://www.academia.edu/Documents/in/Organic_Geochemistry?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="6970" href="https://www.academia.edu/Documents/in/Biomarkers">Biomarkers</a>, <script data-card-contents-for-ri="6970" type="text/json">{"id":6970,"name":"Biomarkers","url":"https://www.academia.edu/Documents/in/Biomarkers?f_ri=7941","nofollow":false}</script><a class="InlineList-item-text" data-has-card-for-ri="7941" href="https://www.academia.edu/Documents/in/Stable_Isotopes">Stable Isotopes</a><script data-card-contents-for-ri="7941" type="text/json">{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false}</script></span></li><script>(function(){ if (true) { new Aedu.ResearchInterestListCard({ el: $('*[data-has-card-for-ri-list=7183831]'), work: {"id":7183831,"title":"Mixed signals of the source and thermal maturity for petroleum accumulations from light hydrocarbons: an example of the Beryl field","created_at":"2014-05-28T01:46:29.163-07:00","url":"https://www.academia.edu/7183831/Mixed_signals_of_the_source_and_thermal_maturity_for_petroleum_accumulations_from_light_hydrocarbons_an_example_of_the_Beryl_field?f_ri=7941","dom_id":"work_7183831","summary":null,"downloadable_attachments":[{"id":48570533,"asset_id":7183831,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":12439121,"first_name":"Clifford","last_name":"Walters","domain_name":"exxonmobil","page_name":"CliffordWalters","display_name":"Clifford Walters","profile_url":"https://exxonmobil.academia.edu/CliffordWalters?f_ri=7941","photo":"/images/s65_no_pic.png"}],"research_interests":[{"id":400,"name":"Earth 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class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/42147263/Oceanography_and_community_structure_drive_zooplankton_carbon_and_nitrogen_dynamics_in_the_eastern_Bering_Sea">Oceanography and community structure drive zooplankton carbon and nitrogen dynamics in the eastern Bering Sea</a></div></div><div class="u-pb4x u-mt3x"><div class="summary u-fs14 u-fw300 u-lineHeight1_5 u-tcGrayDarkest"><div class="summarized">Bottom-up changes in the abundance and composition of primary producers and primary consumers can cascade through ecosystems. Zooplankton stable isotopes (δ13C and δ15N) can be used to determine the linkages between these bottom-up... <a class="more_link u-tcGrayDark u-linkUnstyled" data-container=".work_42147263" data-show=".complete" data-hide=".summarized" data-more-link-behavior="true" href="#">more</a></div><div class="complete hidden">Bottom-up changes in the abundance and composition of primary producers and primary consumers can cascade through ecosystems. Zooplankton stable isotopes (δ13C and δ15N) can be used to determine the linkages between these bottom-up processes, as nutrients, community composition, and physical oceanographic variables can influence zooplankton stable isotopes. However, the expression and variability in zooplankton stable isotopes remain poorly constrained and understood in many systems. Here, we explored how environmental and community variability influences zooplankton stable isotope ratios in the eastern Bering Sea across a wide range of ocean conditions. We tested whether there were interannual, spatial, or climate-driven shifts in<br />the δ15N and δ13C of zooplankton. We found considerable variability across the eastern Bering Sea,<br />with significant differences in isotopes among years, regions, and depths. These patterns were driven by differences in zooplankton community and physical oceanographic variables such as sea surface temperature. Effects were consistent across isotopes, and reflect the shared influences of oceanographic parameters and nutrients on δ13C and δ15N at the base of the food web.</div></div></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/42147263" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span class="work-strip-link-text u-ml1x" data-content="button_text">Bookmark</span></a></div></li><li class="InlineList-item"><div class="download"><a id="3b981480869a09432933d53fd413ea41" rel="nofollow" data-download="{"attachment_id":62286119,"asset_id":42147263,"asset_type":"Work","always_allow_download":false,"track":null,"button_location":"work_strip","source":null,"hide_modal":null}" class="Button Button--sm Button--inverseGreen js-download-button prompt_button doc_download" href="https://www.academia.edu/attachments/62286119/download_file?st=MTczMzExNDczMCw4LjIyMi4yMDguMTQ2&s=work_strip"><i class="fa fa-arrow-circle-o-down fa-lg"></i><span class="u-textUppercase u-ml1x" data-content="button_text">Download</span></a></div></li><li class="InlineList-item"><ul class="InlineList InlineList--bordered u-ph0x"><li class="InlineList-item InlineList-item--bordered"><span class="InlineList-item-text">by <span itemscope="itemscope" itemprop="author" itemtype="https://schema.org/Person"><a class="u-tcGrayDark u-fw700" data-has-card-for-user="661751" href="https://uvic.academia.edu/MarcTrudel">Marc Trudel</a><script data-card-contents-for-user="661751" type="text/json">{"id":661751,"first_name":"Marc","last_name":"Trudel","domain_name":"uvic","page_name":"MarcTrudel","display_name":"Marc Trudel","profile_url":"https://uvic.academia.edu/MarcTrudel?f_ri=7941","photo":"https://0.academia-photos.com/661751/230479/269884/s65_marc.trudel.jpg"}</script></span></span></li><li class="js-paper-rank-work_42147263 InlineList-item InlineList-item--bordered hidden"><span class="js-paper-rank-view hidden u-tcGrayDark" data-paper-rank-work-id="42147263"><i class="u-m1x fa fa-bar-chart"></i><strong class="js-paper-rank"></strong></span><script>$(function() { new Works.PaperRankView({ workId: 42147263, container: ".js-paper-rank-work_42147263", }); 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Zooplankton stable isotopes (δ13C and δ15N) can be used to determine the linkages between these bottom-up processes, as nutrients, community composition, and physical oceanographic variables can influence zooplankton stable isotopes. However, the expression and variability in zooplankton stable isotopes remain poorly constrained and understood in many systems. Here, we explored how environmental and community variability influences zooplankton stable isotope ratios in the eastern Bering Sea across a wide range of ocean conditions. We tested whether there were interannual, spatial, or climate-driven shifts in\nthe δ15N and δ13C of zooplankton. We found considerable variability across the eastern Bering Sea,\nwith significant differences in isotopes among years, regions, and depths. These patterns were driven by differences in zooplankton community and physical oceanographic variables such as sea surface temperature. Effects were consistent across isotopes, and reflect the shared influences of oceanographic parameters and nutrients on δ13C and δ15N at the base of the food web.","downloadable_attachments":[{"id":62286119,"asset_id":42147263,"asset_type":"Work","always_allow_download":false}],"ordered_authors":[{"id":661751,"first_name":"Marc","last_name":"Trudel","domain_name":"uvic","page_name":"MarcTrudel","display_name":"Marc Trudel","profile_url":"https://uvic.academia.edu/MarcTrudel?f_ri=7941","photo":"https://0.academia-photos.com/661751/230479/269884/s65_marc.trudel.jpg"}],"research_interests":[{"id":7941,"name":"Stable Isotopes","url":"https://www.academia.edu/Documents/in/Stable_Isotopes?f_ri=7941","nofollow":false},{"id":199148,"name":"Pacific Salmon","url":"https://www.academia.edu/Documents/in/Pacific_Salmon?f_ri=7941","nofollow":false},{"id":912538,"name":"Bering Sea","url":"https://www.academia.edu/Documents/in/Bering_Sea?f_ri=7941","nofollow":false}]}, }) } })();</script></ul></li></ul></div></div><div class="u-borderBottom1 u-borderColorGrayLighter"><div class="clearfix u-pv7x u-mb0x js-work-card work_5348172" data-work_id="5348172" itemscope="itemscope" itemtype="https://schema.org/ScholarlyArticle"><div class="header"><div class="title u-fontSerif u-fs22 u-lineHeight1_3"><a class="u-tcGrayDarkest js-work-link" href="https://www.academia.edu/5348172/Holocene_variability_of_the_Kuroshio_Current_in_the_Okinawa_Trough_northwestern_Pacific_Ocean">Holocene variability of the Kuroshio Current in the Okinawa Trough, northwestern Pacific Ocean</a></div></div><div class="u-pb4x u-mt3x"></div><ul class="InlineList u-ph0x u-fs13"><li class="InlineList-item logged_in_only"><div class="share_on_academia_work_button"><a class="academia_share Button Button--inverseBlue Button--sm js-bookmark-button" data-academia-share="Work/5348172" data-share-source="work_strip" data-spinner="small_white_hide_contents"><i class="fa fa-plus"></i><span 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