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{"work":{"id":15839557,"created_at":"2015-09-18T02:47:00.902-07:00","from_world_paper_id":142142782,"updated_at":"2024-11-15T09:13:35.472-08:00","_data":{"grobid_abstract":"The vertical and temporal changes in microbial communities were investigated throughout the water column and sediment of the saline meromictic Lake Kaiike by PCR-denaturing gradient gel electrophoresis (DGGE) of 16S rDNA. Marked depth-related changes in microbial communities were observed at the chemocline and the sediment-water interface. However, no major temporal changes in the microbial community below the chemocline were observed during the sampling period, suggesting that the ecosystem in the anoxic zone of Lake Kaiike was nearly stable. Although the sequence of the most conspicuous DGGE band throughout the anoxic water and in the top of the microbial mat was most similar to that of an anoxic, photosynthetic, green sulphur bacterium, Pelodyction luteolum DSM273 (97% similarity), it represented a new phylotype. A comparison of DGGE banding patterns of the water column and sediment samples demonstrated that specific bacteria accumulated on the bottom from the anoxic water layers, and that indigenous microbial populations were present in the sediment. 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window.loswp.fullPageMobileSutdModalVariant = "full_page_mobile_sutd_modal"; window.loswp.useOptimizedScribd4genScript = false; window.loginModal = {}; window.loginModal.appleClientId = 'edu.academia.applesignon';</script><script defer="" src="https://accounts.google.com/gsi/client"></script><div class="ds-loswp-container"><div class="ds-work-card--grid-container"><div class="ds-work-card--container js-loswp-work-card"><div class="ds-work-card--cover"><div class="ds-work-cover--wrapper"><div class="ds-work-cover--container"><button class="ds-work-cover--clickable js-swp-download-button" data-signup-modal="{"location":"swp-splash-paper-cover","attachmentId":42857769,"attachmentType":"pdf"}"><img alt="First page of “Vertical and temporal shifts in microbial communities in the water column and sediment of saline meromictic Lake Kaiike (Japan), as determined by a 16S rDNA-based analysis, and related to physicochemical gradients”" class="ds-work-cover--cover-thumbnail" src="https://0.academia-photos.com/attachment_thumbnails/42857769/mini_magick20190217-17468-1sg9ccu.png?1550393343" /><img alt="PDF Icon" class="ds-work-cover--file-icon" src="//a.academia-assets.com/images/single_work_splash/adobe_icon.svg" /><div class="ds-work-cover--hover-container"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span><p>Download Free PDF</p></div><div class="ds-work-cover--ribbon-container">Download Free PDF</div><div class="ds-work-cover--ribbon-triangle"></div></button></div></div></div><div class="ds-work-card--work-information"><h1 class="ds-work-card--work-title">Vertical and temporal shifts in microbial communities in the water column and sediment of saline meromictic Lake Kaiike (Japan), as determined by a 16S rDNA-based analysis, and related to physicochemical gradients</h1><div class="ds-work-card--work-authors ds-work-card--detail"><a class="ds-work-card--author js-wsj-grid-card-author ds2-5-body-md ds2-5-body-link" data-author-id="35024905" href="https://independent.academia.edu/HiroshiKitazato"><img alt="Profile image of Hiroshi Kitazato" class="ds-work-card--author-avatar" src="//a.academia-assets.com/images/s65_no_pic.png" />Hiroshi Kitazato</a></div><div class="ds-work-card--detail"><p class="ds-work-card--detail ds2-5-body-sm">2004, Environmental Microbiology</p><div class="ds-work-card--work-metadata"><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">visibility</span><p class="ds2-5-body-sm" id="work-metadata-view-count">…</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">description</span><p class="ds2-5-body-sm">16 pages</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">link</span><p class="ds2-5-body-sm">1 file</p></div></div><script>(async () => { const workId = 15839557; 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if (!viewCountBody) { throw new Error('Failed to find work views element'); } viewCountBody.textContent = `${commaizedViewCount} views`; } catch (error) { // Remove the whole views element if there was some issue parsing. document.getElementById('work-metadata-view-count')?.parentNode?.remove(); throw new Error(`Failed to parse view count: ${viewCount}`, error); } }; // If the DOM is still loading, wait for it to be ready before updating the view count. if (document.readyState === "loading") { document.addEventListener('DOMContentLoaded', () => { updateViewCount(viewCount); }); // Otherwise, just update it immediately. } else { updateViewCount(viewCount); } })();</script></div><p class="ds-work-card--work-abstract ds-work-card--detail ds2-5-body-md">The vertical and temporal changes in microbial communities were investigated throughout the water column and sediment of the saline meromictic Lake Kaiike by PCR-denaturing gradient gel electrophoresis (DGGE) of 16S rDNA. Marked depth-related changes in microbial communities were observed at the chemocline and the sediment-water interface. However, no major temporal changes in the microbial community below the chemocline were observed during the sampling period, suggesting that the ecosystem in the anoxic zone of Lake Kaiike was nearly stable. Although the sequence of the most conspicuous DGGE band throughout the anoxic water and in the top of the microbial mat was most similar to that of an anoxic, photosynthetic, green sulphur bacterium, Pelodyction luteolum DSM273 (97% similarity), it represented a new phylotype. A comparison of DGGE banding patterns of the water column and sediment samples demonstrated that specific bacteria accumulated on the bottom from the anoxic water layers, and that indigenous microbial populations were present in the sediment. The measurements of bicarbonate assimilation rates showed significant phototrophic assimilation in the chemocline and lithoautotrophic assimilation throughout the anoxic water, but were not clearly linked with net sulphide turnover rates, indicating that sulphur and carbon metabolisms were not directly correlated.</p><div class="ds-work-card--button-container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--work-card","attachmentId":42857769,"attachmentType":"pdf","workUrl":"https://www.academia.edu/15839557/Vertical_and_temporal_shifts_in_microbial_communities_in_the_water_column_and_sediment_of_saline_meromictic_Lake_Kaiike_Japan_as_determined_by_a_16S_rDNA_based_analysis_and_related_to_physicochemical_gradients"}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" 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We discuss that the relevant microbial composition and metabolic capacities at Laguna de Carrizo, likely developed as an adaptation to thrive in the presence of moderate salinity conditions and potential toxic bio-molecules, in contrast with the properties of previously known anoxic sediments of shallow lakes.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Taxonomic and Functional Metagenomic Profiling of the Microbial Community in the Anoxic Sediment of a Subsaline Shallow Lake (Laguna de Carrizo, Central Spain","attachmentId":50190470,"attachmentType":"pdf","work_url":"https://www.academia.edu/3658985/Taxonomic_and_Functional_Metagenomic_Profiling_of_the_Microbial_Community_in_the_Anoxic_Sediment_of_a_Subsaline_Shallow_Lake_Laguna_de_Carrizo_Central_Spain","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/3658985/Taxonomic_and_Functional_Metagenomic_Profiling_of_the_Microbial_Community_in_the_Anoxic_Sediment_of_a_Subsaline_Shallow_Lake_Laguna_de_Carrizo_Central_Spain"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="2" data-entity-id="92871117" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/92871117/Seasonal_Variations_in_the_Structure_of_an_Anoxygenic_Phototrophic_Bacterial_Community_from_the_Meromictic_Lake_Trekhtsvetnoe_Kandalaksha_Bay_White_Sea_">Seasonal Variations in the Structure of an Anoxygenic Phototrophic Bacterial Community from the Meromictic Lake Trekhtsvetnoe (Kandalaksha Bay, White Sea)</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="145064142" href="https://independent.academia.edu/MLetarova">Maria Letarova</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Microbiology, 2019</p><p class="ds-related-work--abstract ds2-5-body-sm">The community structure below the chemocline was shown to restore during three years after partial mixing resulting from seawater admixture into the lake in autumn 2011; a dense layer (at least 10 8 cells mL-1) of green-colored (g/c) sulfur bacteria (GSB) was formed. During winter, development of low numbers of brown colored (b/c) GSB was observed in the upper layer of green water. During summer seasons, b/c GSB were found to be located in the oxic zone above the green water layer, which was unusual for these organisms. The APB community was found to contain purple bacteria. Four APB strains were isolated from the upper part of the sulfide zone. The b/c and g/c GSB strains were phylogenetically close to each other and to the type species Chlorobium phaeovibrioides DSM 265 (99% similarity gene sequences). One strain of purple bacteria was phylogenetically related to the brackish sulfur bacteria Thiocapsa marina, while the other was related to freshwater bacteria Rhodopseudomonas palustris. The strains of sulfur bacteria were phylogenetically close to the chemocline bacteria from the stratified Lake Kislo-Sladkoe, also located in the coastal zone of the Kandalaksha Bay, White Sea.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Seasonal Variations in the Structure of an Anoxygenic Phototrophic Bacterial Community from the Meromictic Lake Trekhtsvetnoe (Kandalaksha Bay, White Sea)","attachmentId":95765900,"attachmentType":"pdf","work_url":"https://www.academia.edu/92871117/Seasonal_Variations_in_the_Structure_of_an_Anoxygenic_Phototrophic_Bacterial_Community_from_the_Meromictic_Lake_Trekhtsvetnoe_Kandalaksha_Bay_White_Sea_","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/92871117/Seasonal_Variations_in_the_Structure_of_an_Anoxygenic_Phototrophic_Bacterial_Community_from_the_Meromictic_Lake_Trekhtsvetnoe_Kandalaksha_Bay_White_Sea_"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="3" data-entity-id="88778417" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/88778417/Spatio_temporal_insights_into_microbiology_of_the_freshwater_to_hypersaline_oxic_hypoxic_euxinic_waters_of_Ursu_Lake">Spatio‐temporal insights into microbiology of the freshwater‐to‐hypersaline, oxic‐hypoxic‐euxinic waters of Ursu Lake</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="62981052" href="https://malta.academia.edu/JessicaEdwards">Jessica Edwards</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Environmental Microbiology, 2020</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Spatio‐temporal insights into microbiology of the freshwater‐to‐hypersaline, oxic‐hypoxic‐euxinic waters of Ursu Lake","attachmentId":92690284,"attachmentType":"pdf","work_url":"https://www.academia.edu/88778417/Spatio_temporal_insights_into_microbiology_of_the_freshwater_to_hypersaline_oxic_hypoxic_euxinic_waters_of_Ursu_Lake","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/88778417/Spatio_temporal_insights_into_microbiology_of_the_freshwater_to_hypersaline_oxic_hypoxic_euxinic_waters_of_Ursu_Lake"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="4" data-entity-id="67612145" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/67612145/Green_sulphur_bacteria_as_a_component_of_the_photosynthetic_plankton_community_in_small_dimictic_humic_lakes_with_an_anoxic_hypolimnion">Green sulphur bacteria as a component of the photosynthetic plankton community in small dimictic humic lakes with an anoxic hypolimnion</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="38123387" href="https://independent.academia.edu/LArvola">L. Arvola</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Aquatic Microbial Ecology, 2013</p><p class="ds-related-work--abstract ds2-5-body-sm">High bacteriochlorophyll (BChl) concentrations in the anoxic water layers of some humic lakes have indicated that green sulphur bacteria (GSB) may be ecologically significant. The abundance and spatial distribution of GSB were therefore addressed in 13 small humic lakes using fragment analysis and sequencing of PCR-amplified 16S rRNA genes. GSB were detected from lakes where the photosynthetically active radiation was at least 1.1 µE m −2 s −1 at the oxic− anoxic boundary layer. In these lakes, 13 to 42% of the 16S rRNA gene sequences of the anoxic water column were assigned to GSB. The spatial distribution of GSB was tightly correlated with the spectrophotometrically measured BChl concentration during the summer season. Maximum BChl concentrations were observed in the uppermost part of the anoxic water layer, covering most of the chlorophyll pigment in these lakes. The GSB of the humic lakes typically belonged to a phylogenetically homogenous group closely related to Chlorobium clathratiforme.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Green sulphur bacteria as a component of the photosynthetic plankton community in small dimictic humic lakes with an anoxic hypolimnion","attachmentId":78366406,"attachmentType":"pdf","work_url":"https://www.academia.edu/67612145/Green_sulphur_bacteria_as_a_component_of_the_photosynthetic_plankton_community_in_small_dimictic_humic_lakes_with_an_anoxic_hypolimnion","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/67612145/Green_sulphur_bacteria_as_a_component_of_the_photosynthetic_plankton_community_in_small_dimictic_humic_lakes_with_an_anoxic_hypolimnion"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="5" data-entity-id="53609153" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/53609153/Successional_changes_in_bacterial_community_assemblages_following_anoxia_in_the_hypolimnion_of_a_eutrophic_lake">Successional changes in bacterial community assemblages following anoxia in the hypolimnion of a eutrophic lake</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="142090756" href="https://independent.academia.edu/CorinneBardot">Corinne Bardot</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Aquatic Microbial Ecology, 2009</p><p class="ds-related-work--abstract ds2-5-body-sm">Dynamics of bacterial assemblages following anoxia in the hypolimnion of a eutrophic lake (Lake Aydat) were characterized. The sampling started in spring before complete anoxia and was continued weekly until complete mixing of the water column occurred in autumn. Bacterial community patterns at 3 sampled depths (10, 12 and 14 m) were investigated using temporal temperature gradient gel electrophoresis (TTGE) and terminal restriction fragment length polymorphism (T-RFLP) analyses. Results revealed changes in the structure of the bacterial communities as conditions changed from oxic to anoxic. Once anoxia had been reached, anaerobic bacterial communities continued to change and exhibited gradual successional patterns at the 3 depths. During the anoxic period, bacterial communities at 10 and 12 m were split into 2 groups corresponding to the steps 'until' and 'after' maximum stratification, which occurred on 19 August 2004. While the succession of the bacterial community in the hypolimnion was dynamic and exhibited gradual patterns at the 3 depths, a 'sensitivity gradient' to O 2 depletion was suggested: communities at 10 m appeared to be more affected by the shift in O 2 concentrations than those in deeper water layers.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Successional changes in bacterial community assemblages following anoxia in the hypolimnion of a eutrophic lake","attachmentId":70375037,"attachmentType":"pdf","work_url":"https://www.academia.edu/53609153/Successional_changes_in_bacterial_community_assemblages_following_anoxia_in_the_hypolimnion_of_a_eutrophic_lake","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/53609153/Successional_changes_in_bacterial_community_assemblages_following_anoxia_in_the_hypolimnion_of_a_eutrophic_lake"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="6" data-entity-id="15839592" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/15839592/Genetic_Diversity_of_Microbial_Eukaryotes_in_Anoxic_Sediment_of_the_Saline_Meromictic_Lake_Namako_ike_Japan_On_the_Detection_of_Anaerobic_or_Anoxic_tolerant_Lineages_of_Eukaryotes">Genetic Diversity of Microbial Eukaryotes in Anoxic Sediment of the Saline Meromictic Lake Namako-ike (Japan): On the Detection of Anaerobic or Anoxic-tolerant Lineages of Eukaryotes</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="35024905" href="https://independent.academia.edu/HiroshiKitazato">Hiroshi Kitazato</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Protist, 2007</p><p class="ds-related-work--abstract ds2-5-body-sm">Available sequence data on eukaryotic small-subunit ribosomal DNA (SSU rDNA) directly retrieved from various environments have increased recently, and the diversity of microbial eukaryotes (protists) has been shown to be much greater than previously expected. However, the molecular information accumulated to date does still not thoroughly reveal ecological distribution patterns of microbial eukaryotes. In the ongoing challenge to detect anaerobic or anoxic-tolerant lineages of eukaryotes, we directly extracted DNA from the anoxic sediment of a saline meromictic lake, constructed genetic libraries of PCR-amplified SSU rDNA, and performed phylogenetic analyses with the cloned SSU rDNA sequences. Although a few sequences could not be confidently assigned to any major eukaryotic groups in the analyses and are debatable regarding their taxonomic positions, most sequences obtained have affiliations with known major lineages of eukaryotes (Cercozoa, Alveolata, Stramenopiles, and Opisthokonta). Among these sequences, some branched with lineages predominantly composed of uncultured environmental clones retrieved from other anoxic environments, while others were closely related to those of eukaryotic parasites (e.g. Phytomyxea of Cercozoa, Gregarinea of Alveolata, and Ichthyosporea of Opisthokonta).</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Genetic Diversity of Microbial Eukaryotes in Anoxic Sediment of the Saline Meromictic Lake Namako-ike (Japan): On the Detection of Anaerobic or Anoxic-tolerant Lineages of Eukaryotes","attachmentId":42857748,"attachmentType":"pdf","work_url":"https://www.academia.edu/15839592/Genetic_Diversity_of_Microbial_Eukaryotes_in_Anoxic_Sediment_of_the_Saline_Meromictic_Lake_Namako_ike_Japan_On_the_Detection_of_Anaerobic_or_Anoxic_tolerant_Lineages_of_Eukaryotes","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/15839592/Genetic_Diversity_of_Microbial_Eukaryotes_in_Anoxic_Sediment_of_the_Saline_Meromictic_Lake_Namako_ike_Japan_On_the_Detection_of_Anaerobic_or_Anoxic_tolerant_Lineages_of_Eukaryotes"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="7" data-entity-id="12605968" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/12605968/Archaeal_and_Bacterial_Communities_Respond_Differently_to_Environmental_Gradients_in_Anoxic_Sediments_of_a_California_Hypersaline_Lake_the_Salton_Sea">Archaeal and Bacterial Communities Respond Differently to Environmental Gradients in Anoxic Sediments of a California Hypersaline Lake, the Salton Sea</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="31550655" href="https://independent.academia.edu/SwanBrandon">Brandon Swan</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Applied and Environmental Microbiology, 2010</p><p class="ds-related-work--abstract ds2-5-body-sm">Sulfidic, anoxic sediments of the moderately hypersaline Salton Sea contain gradients in salinity and carbon that potentially structure the sedimentary microbial community. We investigated the abundance, community structure, and diversity of Bacteria and Archaea along these gradients to further distinguish the ecologies of these domains outside their established physiological range. Quantitative PCR was used to enumerate 16S rRNA gene abundances of Bacteria, Archaea, and Crenarchaeota. Community structure and diversity were evaluated by terminal restriction fragment length polymorphism (T-RFLP), quantitative analysis of gene (16S rRNA) frequencies of dominant microorganisms, and cloning and sequencing of 16S rRNA. Archaea were numerically dominant at all depths and exhibited a lesser response to environmental gradients than that of Bacteria. The relative abundance of Crenarchaeota was low (0.4 to 22%) at all depths but increased with decreased carbon content and increased salinity. Salinity structured the bacterial community but exerted no significant control on archaeal community structure, which was weakly correlated with total carbon. Partial sequencing of archaeal 16S rRNA genes retrieved from three sediment depths revealed diverse communities of Euryarchaeota and Crenarchaeota, many of which were affiliated with groups previously described from marine sediments. The abundance of these groups across all depths suggests that many putative marine archaeal groups can tolerate elevated salinity (5.0 to 11.8% [wt/vol]) and persist under the anaerobic conditions present in Salton Sea sediments. The differential response of archaeal and bacterial communities to salinity and carbon patterns is consistent with the hypothesis that adaptations to energy stress and availability distinguish the ecologies of these domains.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Archaeal and Bacterial Communities Respond Differently to Environmental Gradients in Anoxic Sediments of a California Hypersaline Lake, the Salton Sea","attachmentId":46055105,"attachmentType":"pdf","work_url":"https://www.academia.edu/12605968/Archaeal_and_Bacterial_Communities_Respond_Differently_to_Environmental_Gradients_in_Anoxic_Sediments_of_a_California_Hypersaline_Lake_the_Salton_Sea","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/12605968/Archaeal_and_Bacterial_Communities_Respond_Differently_to_Environmental_Gradients_in_Anoxic_Sediments_of_a_California_Hypersaline_Lake_the_Salton_Sea"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="8" data-entity-id="12605971" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/12605971/Periodic_sulfide_irruptions_impact_microbial_community_structure_and_diversity_in_the_water_column_of_a_hypersaline_lake">Periodic sulfide irruptions impact microbial community structure and diversity in the water column of a hypersaline lake</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="31550655" href="https://independent.academia.edu/SwanBrandon">Brandon Swan</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Aquatic Microbial Ecology, 2010</p><p class="ds-related-work--abstract ds2-5-body-sm">The occurrence of hypoxia/anoxia and sulfide formation in productive lakes, enclosed seas, and the coastal ocean often results in catastrophic loss of plankton, benthic invertebrates, and fish populations. Sulfide formed in deeper waters is mixed upward due to storm events or currents, thereby removing oxygen from large portions of the water column. Although the deleterious effects of these events on many organisms are known, the effects on microbial communities have received less attention. Archaeal and bacterial community structure and diversity were investigated at 6 stations along 2 intersecting transects passing through a sulfide-rich plume formed in the moderately hypersaline Salton Sea, California, USA. Community structure analysis clearly distinguished samples within and outside the sulfide plume, and multivariate analyses found these patterns to be correlated with sulfide concentration. Cloning and sequencing of 16S rRNA genes revealed that Actinobacteria, Gammaproteobacteria (purple sulfur bacteria), and Chlorobi (green sulfur bacteria) were more prevalent at stations with higher sulfide concentration, and Synechococcus spp. was the most abundant bacterial lineage at most stations. Archaeal diversity was low, and sequences were affiliated with Methanohalophilus spp., Methanococcoides spp., Methanosarcinales spp., many of which are related to known methylotrophs, and Marine Benthic Group (MBG)-D sequences. Compositional differences detected between stations may reflect differential tolerances or utilization of sulfide and other reduced-sulfur compounds by the planktonic microbial community.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Periodic sulfide irruptions impact microbial community structure and diversity in the water column of a hypersaline lake","attachmentId":46055081,"attachmentType":"pdf","work_url":"https://www.academia.edu/12605971/Periodic_sulfide_irruptions_impact_microbial_community_structure_and_diversity_in_the_water_column_of_a_hypersaline_lake","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/12605971/Periodic_sulfide_irruptions_impact_microbial_community_structure_and_diversity_in_the_water_column_of_a_hypersaline_lake"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="9" data-entity-id="122277346" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/122277346/Strong_reorganization_of_multi_domain_microbial_networks_associated_with_primary_producers_sedimentation_from_oxic_to_anoxic_conditions_in_an_hypersaline_lake">Strong reorganization of multi-domain microbial networks associated with primary producers sedimentation from oxic to anoxic conditions in an hypersaline lake</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="38351633" href="https://ipgp.academia.edu/MAder">Magali Ader</a></div><p class="ds-related-work--metadata ds2-5-body-xs">FEMS Microbiology Ecology, 2021</p><p class="ds-related-work--abstract ds2-5-body-sm">Understanding the role of microbial interactions in the functioning of natural systems is often impaired by the levels of complexity they encompass. In this study, we used the relative simplicity of an hypersaline crater lake hosting only microbial organisms (Dziani Dzaha) to provide a detailed analysis of the microbial networks including the three domains of life. We identified two main ecological zones, one euphotic and oxic zone in surface, where two phytoplanktonic organisms produce a very high biomass, and one aphotic and anoxic deeper zone, where this biomass slowly sinks and undergoes anaerobic degradation. We highlighted strong differences in the structure of microbial communities from the two zones and between the microbial consortia associated with the two primary producers. Primary producers sedimentation was associated with a major reorganization of the microbial network at several levels: global properties, modules composition, nodes and links characteristics. We eviden...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Strong reorganization of multi-domain microbial networks associated with primary producers sedimentation from oxic to anoxic conditions in an hypersaline lake","attachmentId":117054383,"attachmentType":"pdf","work_url":"https://www.academia.edu/122277346/Strong_reorganization_of_multi_domain_microbial_networks_associated_with_primary_producers_sedimentation_from_oxic_to_anoxic_conditions_in_an_hypersaline_lake","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/122277346/Strong_reorganization_of_multi_domain_microbial_networks_associated_with_primary_producers_sedimentation_from_oxic_to_anoxic_conditions_in_an_hypersaline_lake"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div></div></div><div class="ds-sticky-ctas--wrapper js-loswp-sticky-ctas hidden"><div class="ds-sticky-ctas--grid-container"><div class="ds-sticky-ctas--container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--sticky-ctas","attachmentId":42857769,"attachmentType":"pdf","workUrl":null}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--sticky-ctas","attachmentId":42857769,"attachmentType":"pdf","workUrl":null}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div><div class="ds-below-fold--grid-container"><div class="ds-work--container js-loswp-embedded-document"><div class="attachment_preview" data-attachment="Attachment_42857769" style="display: none"><div class="js-scribd-document-container"><div class="scribd--document-loading js-scribd-document-loader" style="display: block;"><img alt="Loading..." src="//a.academia-assets.com/images/loaders/paper-load.gif" /><p>Loading Preview</p></div></div><div style="text-align: center;"><div class="scribd--no-preview-alert js-preview-unavailable"><p>Sorry, preview is currently unavailable. 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href="https://www.academia.edu/5409506/Effect_of_anoxia_and_high_sulphide_concentrations_on_heterotrophic_microbial_communities_in_reduced_surface_sediments_Black_Spots_in_sandy_intertidal_flats_of_the_German_Wadden_Sea"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="8" data-entity-id="102258377" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/102258377/Seasonal_change_in_microbial_sulfur_cycling_in_monomictic_Lake_Fukami_ike_Japan">Seasonal change in microbial sulfur cycling in monomictic Lake Fukami-ike, Japan</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="51758314" 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href="https://independent.academia.edu/AntonioCamachoGonz%C3%A1lez">Antonio Camacho González</a></div><p class="ds-related-work--metadata ds2-5-body-xs">FEMS microbiology ecology, 2015</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Diversity of freshwater Epsilonproteobacteria and dark inorganic carbon fixation in the sulphidic redoxcline of a meromictic karstic lake","attachmentId":78254624,"attachmentType":"pdf","work_url":"https://www.academia.edu/67437675/Diversity_of_freshwater_Epsilonproteobacteria_and_dark_inorganic_carbon_fixation_in_the_sulphidic_redoxcline_of_a_meromictic_karstic_lake","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline 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data-author-id="83498724" href="https://fpu-jp.academia.edu/TakafumiKataoka">Takafumi Kataoka</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Estuarine, Coastal and Shelf Science, 2019</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Protistan community composition in anoxic sediments from three salinity-disparate Japanese lakes","attachmentId":100942622,"attachmentType":"pdf","work_url":"https://www.academia.edu/100002248/Protistan_community_composition_in_anoxic_sediments_from_three_salinity_disparate_Japanese_lakes","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-related-work-grid-card-view-pdf" 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ds2-5-body-sm ds2-5-body-link" data-author-id="83498724" href="https://fpu-jp.academia.edu/TakafumiKataoka">Takafumi Kataoka</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Archives of Microbiology, 2013</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Dominance of green sulfur bacteria in the chemocline of the meromictic Lake Suigetsu, Japan, as revealed by dissimilatory sulfite reductase gene analysis","attachmentId":113183461,"attachmentType":"pdf","work_url":"https://www.academia.edu/117286738/Dominance_of_green_sulfur_bacteria_in_the_chemocline_of_the_meromictic_Lake_Suigetsu_Japan_as_revealed_by_dissimilatory_sulfite_reductase_gene_analysis","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free 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class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="48791825" href="https://independent.academia.edu/DmitryKosolapov">Dmitry Kosolapov</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Doklady Biological Sciences, 2005</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Thin-layer vertical distributions of purple sulfur bacteria in chemocline zones of meromictic lakes Shira and Shunet (Khakassia)","attachmentId":85884506,"attachmentType":"pdf","work_url":"https://www.academia.edu/79022990/Thin_layer_vertical_distributions_of_purple_sulfur_bacteria_in_chemocline_zones_of_meromictic_lakes_Shira_and_Shunet_Khakassia_","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free 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class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="242534183" href="https://independent.academia.edu/ZhuoyiZhu">Zhuoyi Zhu</a></div><p class="ds-related-work--metadata ds2-5-body-xs">MicrobiologyOpen, 2016</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Bacterial diversity in the surface sediments of the hypoxic zone near the Changjiang Estuary and in the East China Sea","attachmentId":93194773,"attachmentType":"pdf","work_url":"https://www.academia.edu/89383704/Bacterial_diversity_in_the_surface_sediments_of_the_hypoxic_zone_near_the_Changjiang_Estuary_and_in_the_East_China_Sea","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free 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href="https://www.academia.edu/51238035/Evidence_for_a_growth_zone_for_deep_subsurface_microbial_clades_in_near_surface_anoxic_sediments"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="16" data-entity-id="34305423" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/34305423/Structure_and_activity_of_microbial_communities_in_sediments">Structure and activity of microbial communities in sediments</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="37335157" href="https://ethz.academia.edu/BWehrli">Bernhard Wehrli</a></div><p class="ds-related-work--metadata ds2-5-body-xs">1997</p><div 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