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ecology</title> <meta name="description" content="Search results for: trophic ecology"> <meta name="keywords" content="trophic ecology"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="trophic ecology"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 429</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: trophic ecology</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">429</span> Ecopath Analysis of Trophic Structure in Moroccan Mediterranean Sea and Atlantic Ocean</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Salma%20Aboussalam">Salma Aboussalam</a>, <a href="https://publications.waset.org/abstracts/search?q=Karima%20Khalil"> Karima Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=Khalid%20Elkalay"> Khalid Elkalay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Ecopath model was utilized to evaluate the trophic structure, function, and current status of the Moroccan Mediterranean Sea ecosystem. The model incorporated 31 functional groups, including fish species, invertebrates, primary producers, and detritus. Through the analysis of trophic interactions among these groups, an average trophic transfer efficiency of 23% was found. The findings revealed that the ecosystem produced more energy than it consumed, with high respiration and consumption rates. Indicators of stability and development were low, indicating that the ecosystem is disturbed by a linear trophic structure. Additionally, keystone species were identified through the use of the keystone index and mixed trophic impact analysis, with demersal invertebrates, zooplankton, and cephalopods found to have a significant impact on other groups. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ecopath" title="ecopath">ecopath</a>, <a href="https://publications.waset.org/abstracts/search?q=food%20web" title=" food web"> food web</a>, <a href="https://publications.waset.org/abstracts/search?q=trophic%20flux" title=" trophic flux"> trophic flux</a>, <a href="https://publications.waset.org/abstracts/search?q=Moroccan%20Mediterranean%20Sea" title=" Moroccan Mediterranean Sea"> Moroccan Mediterranean Sea</a> </p> <a href="https://publications.waset.org/abstracts/161771/ecopath-analysis-of-trophic-structure-in-moroccan-mediterranean-sea-and-atlantic-ocean" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161771.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">95</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">428</span> Investigating Trophic Relationships in Moroccan Marine Ecosystems: A Study of the Mediterranean and Atlantic Using Ecopath</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Salma%20Aboussalam">Salma Aboussalam</a>, <a href="https://publications.waset.org/abstracts/search?q=Karima%20Khalil"> Karima Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=Khalid%20Elkalay"> Khalid Elkalay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An Ecopath model was employed to investigate the trophic structure, function, and current state of the Moroccan Mediterranean Sea ecosystem. The model incorporated 31 functional groups, including 21 fish species, 7 invertebrates, 2 primary producers, and a detritus group. The trophic interactions among these groups were analyzed, revealing an average trophic transfer efficiency of 23%. The results indicated that the ecosystem produced more energy than it consumed, with high respiration and consumption rates. Indicators of stability and development were low for the Finn cycle index (13.97), system omnivory index (0.18), and average Finn path length (3.09), indicating a disturbed ecosystem with a linear trophic structure. Keystone species were identified through the use of the keystone index and mixed trophic impact analysis, with demersal invertebrates, zooplankton, and cephalopods found to have a significant impact on other groups. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ecopath" title="Ecopath">Ecopath</a>, <a href="https://publications.waset.org/abstracts/search?q=food%20web" title=" food web"> food web</a>, <a href="https://publications.waset.org/abstracts/search?q=trophic%20flux" title=" trophic flux"> trophic flux</a>, <a href="https://publications.waset.org/abstracts/search?q=Moroccan%20Mediterranean%20Sea" title=" Moroccan Mediterranean Sea"> Moroccan Mediterranean Sea</a> </p> <a href="https://publications.waset.org/abstracts/161770/investigating-trophic-relationships-in-moroccan-marine-ecosystems-a-study-of-the-mediterranean-and-atlantic-using-ecopath" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161770.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">103</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">427</span> Comparing the Trophic Structure of the Moroccan Mediterranean Sea with the Moroccan Atlantic Coast Using Ecopath Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Salma%20Aboussalam">Salma Aboussalam</a>, <a href="https://publications.waset.org/abstracts/search?q=Karima%20Khalil"> Karima Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=Khalid%20Elkalay"> Khalid Elkalay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> To describe the structure, functioning, and state of the Moroccan Mediterranean Sea ecosystem, an Ecopath mass balance model has been applied. The model is based on 31 functional groups, containing 21 fishes, 7 invertebrates, 2 primary producers, and one dead group (detritus), which are considered in this work to explore the trophic interaction. The system's average trophic transfer efficiency was 23%. Both the total primary production and total respiration were calculated to be >1, suggesting that more energy is produced than respired in the system. The structure of our system is based on high respiration and consumption flows. Indicators of ecosystem stability and development showed low values of the Finn cycle index (13.97), system omnivory index (0.18), and average Finn path length (3.09), suggesting that our system is disturbed and has a more linear than web-like trophic structure. The keystone index and mixed trophic impact analysis indicated that other demersal invertebrates, zooplankton, and cephalopods had a tremendous impact on other groups and were recognized as keystone species. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ecopath" title="Ecopath">Ecopath</a>, <a href="https://publications.waset.org/abstracts/search?q=food%20web" title=" food web"> food web</a>, <a href="https://publications.waset.org/abstracts/search?q=trophic%20flux" title=" trophic flux"> trophic flux</a>, <a href="https://publications.waset.org/abstracts/search?q=Moroccan%20Mediterranean%20Sea" title=" Moroccan Mediterranean Sea"> Moroccan Mediterranean Sea</a> </p> <a href="https://publications.waset.org/abstracts/161763/comparing-the-trophic-structure-of-the-moroccan-mediterranean-sea-with-the-moroccan-atlantic-coast-using-ecopath-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161763.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">91</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">426</span> Trophic Ecology of Sarotherodon Melanotheron Heudelotii and Tilapia Guineensis from the Banc D'Arguin National Park, Mauritania</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N%C3%A9n%C3%A9%20Gall%C3%A9%20Kide">Néné Gallé Kide</a>, <a href="https://publications.waset.org/abstracts/search?q=Mamadou%20Dia"> Mamadou Dia</a>, <a href="https://publications.waset.org/abstracts/search?q=Lemhaba%20Ould%20Yarba"> Lemhaba Ould Yarba</a>, <a href="https://publications.waset.org/abstracts/search?q=Youssouf%20Kone"> Youssouf Kone</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatimetou%20Mint%20Khalil"> Fatimetou Mint Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=Hajar%20Bouksir"> Hajar Bouksir</a>, <a href="https://publications.waset.org/abstracts/search?q=Ghislane%20Salhi"> Ghislane Salhi</a>, <a href="https://publications.waset.org/abstracts/search?q=Youn%C3%A8s%20Saoud"> Younès Saoud </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The diet of Sarotherodon melanotheron and Tilapia guineensis were investigated in the National Park of Banc d'Arguin (PNBA) from September 2012 to October 2013. A total of 499 individuals ranging in size between 219 and 400 mm total length of S. melanotheron (253 males and 246 females), and 280 individuals of T.guineensis (229 males and 51 females) ranged between 180 and 424mm total length. We used for studying the feeding habits of both two species the frequency of occurrence method. The coefficient of emptiness was 40.88% for S. melanotheron and 38.57% for T. guineensis. Both two species were herbivorous and very close feedings. Their diet consists of Seagrass, green, red, blue, and brown algae, diatoms, gastropods, bivalves, Crustaceans, and mud. The Seagrass and green algae were prey preference of these two species. The diet feeding showed that the composition varies slightly depending on the season and size of individuals. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cichlidae" title="Cichlidae">Cichlidae</a>, <a href="https://publications.waset.org/abstracts/search?q=trophic%20ecology" title=" trophic ecology"> trophic ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=National%20park" title=" National park"> National park</a>, <a href="https://publications.waset.org/abstracts/search?q=Banc%20d%27Arguin" title=" Banc d'Arguin"> Banc d'Arguin</a>, <a href="https://publications.waset.org/abstracts/search?q=Mauritania" title=" Mauritania"> Mauritania</a> </p> <a href="https://publications.waset.org/abstracts/16683/trophic-ecology-of-sarotherodon-melanotheron-heudelotii-and-tilapia-guineensis-from-the-banc-darguin-national-park-mauritania" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16683.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">794</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">425</span> The Ecological Role of Loligo forbesii in the Moray Firth Ecosystem, Northeast Scotland</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Godwin%20A.%20Otogo">Godwin A. Otogo</a>, <a href="https://publications.waset.org/abstracts/search?q=Sansanee%20Wangvoralak"> Sansanee Wangvoralak</a>, <a href="https://publications.waset.org/abstracts/search?q=Graham%20J.%20Pierce"> Graham J. Pierce</a>, <a href="https://publications.waset.org/abstracts/search?q=Lee%20C.%20Hastie"> Lee C. Hastie</a>, <a href="https://publications.waset.org/abstracts/search?q=Beth%20Scott"> Beth Scott</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The squid <em>Loligo forbesii</em> is suspected to be an important species in marine food webs, as it can strongly impact its prey and be impacted upon by predation, competition, fishing and/or climate variability. To quantify these impacts in the food web, the measurement of its trophic position and ecological role within well-studied ecosystems is essential. An Ecopath model was balanced and run for the Moray Firth ecosystem and was used to investigate the significance of this squid’s trophic roles. The network analysis routine included in Ecopath with Ecosim (EwE) was used to estimate trophic interaction, system indicators (health condition and developmental stage) and food web features. Results indicated that within the Moray Firth squid occupy a top trophic position in the food web and also a major prey item for many other species. Results from Omnivory Index (OI) showed that squid is a generalized feeder transferring energy across wide trophic levels and is more important as a predator than that as a prey in the Moray Firth ecosystem. The results highlight the importance of taking squid into account in the management of Europe’s living marine resources. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Squid" title="Squid">Squid</a>, <a href="https://publications.waset.org/abstracts/search?q=Loligo%20forbesii" title=" Loligo forbesii"> Loligo forbesii</a>, <a href="https://publications.waset.org/abstracts/search?q=Ecopath" title=" Ecopath"> Ecopath</a>, <a href="https://publications.waset.org/abstracts/search?q=Moray%20Firth" title=" Moray Firth"> Moray Firth</a>, <a href="https://publications.waset.org/abstracts/search?q=Trophic%20level" title=" Trophic level "> Trophic level </a> </p> <a href="https://publications.waset.org/abstracts/23472/the-ecological-role-of-loligo-forbesii-in-the-moray-firth-ecosystem-northeast-scotland" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23472.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">478</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">424</span> Assessing the Ecological Status of the Moroccan Mediterranean Sea: An Ecopath Modeling Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Salma%20Aboussalam">Salma Aboussalam</a>, <a href="https://publications.waset.org/abstracts/search?q=Karima%20Khalil"> Karima Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=Khalid%20Elkalay"> Khalid Elkalay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to understand the structure, functioning, and current state of the Moroccan Mediterranean Sea ecosystem, an Ecopath mass balance model was applied. The model was based on 31 functional groups, which included 21 fish species, 7 invertebrates, 2 primary producers, and one detritus group. The trophic interactions between these groups were analyzed, and the system's average trophic transfer efficiency was found to be 23%. The total primary production and total respiration were calculated to be greater than 1, indicating that the system produces more energy than it respires. The ecosystem was found to have a high level of respiration and consumption flows, and indicators of stability and development showed low values for the Finn cycle index (13.97), system omnivory index (0.18), and average Finn path length (3.09), indicating that the ecosystem is disturbed and has a linear rather than web-like trophic structure. Keystone species were identified using the keystone index and mixed trophic impact analysis, with other demersal invertebrates, zooplankton, and cephalopods found to have a significant impact on other groups. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ecopath" title="ecopath">ecopath</a>, <a href="https://publications.waset.org/abstracts/search?q=food%20web" title=" food web"> food web</a>, <a href="https://publications.waset.org/abstracts/search?q=trophic%20flux" title=" trophic flux"> trophic flux</a>, <a href="https://publications.waset.org/abstracts/search?q=moroccan%20mediterranean%20sea" title=" moroccan mediterranean sea"> moroccan mediterranean sea</a> </p> <a href="https://publications.waset.org/abstracts/161765/assessing-the-ecological-status-of-the-moroccan-mediterranean-sea-an-ecopath-modeling-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161765.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">79</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">423</span> Assessing Nutrient Concentration and Trophic Status of Brahma Sarover at Kurukshetra, India</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shailendra%20Kumar%20Patidar">Shailendra Kumar Patidar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Eutrophication of surface water is one of the most widespread environmental problems at present. Large number of pilgrims and tourists visit sacred artificial tank known as “Brahma Sarover” located at Kurukshetra, India to take holy dip and perform religious ceremonies. The sources of pollutants include impurities in feed water, mass bathing, religious offerings and windblown particulate matter. Studies so far have focused mainly on assessing water quality for bathing purpose by using physico-chemical and bacteriological parameters. No effort has been made to assess nutrient concentration and trophic status of the tank to take more appropriate measures for improving water quality on long term basis. In the present study, total nitrogen, total phosphorous and chlorophyll a measurements have been done to assess the nutrient level and trophic status of the tank. The results show presence of high concentration of nutrients and Chlorophyll a indicating mesotrophic and eutrophic state of the tank. Phosphorous has been observed as limiting nutrient in the tank water. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Brahma%20Sarover" title="Brahma Sarover">Brahma Sarover</a>, <a href="https://publications.waset.org/abstracts/search?q=eutrophication" title=" eutrophication"> eutrophication</a>, <a href="https://publications.waset.org/abstracts/search?q=nutrients" title=" nutrients"> nutrients</a>, <a href="https://publications.waset.org/abstracts/search?q=trophic%20status" title=" trophic status"> trophic status</a> </p> <a href="https://publications.waset.org/abstracts/12723/assessing-nutrient-concentration-and-trophic-status-of-brahma-sarover-at-kurukshetra-india" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12723.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">372</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">422</span> Nuances of Urban Ecology in the Present Global Scenario: Scope, Issues, Challenges and Implications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Meenakshi%20Pappu">Meenakshi Pappu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The term, 'urban ecology' has often been misconstrued by the educational practitioners as well as the researchers as a study under a single discipline i.e., the environmental sciences. One who has done research extensively in this study would always argue that urban ecology is not a study under a single discipline, but it is a study across disciplines such as social sciences and other sciences like architecture, engineering, planning, ecology, geography, biology, economics, sociology, anthropology, psychology and health sciences. The aim of this paper is to discuss at length the scope of Urban Ecology as an interdisciplinary study. The paper highlights the nuances of urban ecology as a study across disciplines and the challenges and the implications it holds for future research by conducting a qualitative survey in the particular areas. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=educational%20practitioners" title="educational practitioners">educational practitioners</a>, <a href="https://publications.waset.org/abstracts/search?q=interdisciplinary" title=" interdisciplinary"> interdisciplinary</a>, <a href="https://publications.waset.org/abstracts/search?q=researchers" title=" researchers"> researchers</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20ecology" title=" urban ecology"> urban ecology</a> </p> <a href="https://publications.waset.org/abstracts/60758/nuances-of-urban-ecology-in-the-present-global-scenario-scope-issues-challenges-and-implications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60758.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">419</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">421</span> Evidence of Total Mercury Biomagnification in Tropical Estuary Lagoon in East Coast of Peninsula, Malaysia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Quang%20Dung%20Le">Quang Dung Le</a>, <a href="https://publications.waset.org/abstracts/search?q=Kentaro%20Tanaka"> Kentaro Tanaka</a>, <a href="https://publications.waset.org/abstracts/search?q=Viet%20Dung%20Luu"> Viet Dung Luu</a>, <a href="https://publications.waset.org/abstracts/search?q=Kotaro%20Shirai"> Kotaro Shirai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Mercury pollutant is great concerns in globe due to its toxicity and biomagnification through the food web. Recently increasing approaches of stable isotope analyses which have applied in food-web structure are enabled to elucidate more insight trophic transfer of pollutants in ecosystems. In this study, the integration of total mercury (Hg) and stable isotopic analyses (δ13C and δ15N) were measured from basal food sources to invertebrates and fishes in order to determine Hg transfer in Setiu lagoon food webs. The average Hg concentrations showed the increasing trend from low to high trophic levels. The result also indicated that potential Hg exposure from inside mangrove could be higher than that from the tidal flat of mangrove creek. Fish Hg concentrations are highly variable, and many factors driving this variability need further examinations. A positive correlation found between Hg concentrations and δ15N values (the trophic magnification factor was 3.02), suggesting Hg biomagnification through the lagoon food web. Almost all Hg concentrations in fishes and mud crabs did not present a risk for human consumption, however, the Hg concentrations of Caranx ignobilis exceed the permitted level could raise a concern of the potential risk for the marine system. Further investigations should be done to elucidate whether trophic relay relates to high Hg concentrations of some fish species in coastal systems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mercury" title="mercury">mercury</a>, <a href="https://publications.waset.org/abstracts/search?q=transfer" title=" transfer"> transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=stable%20isotopes" title=" stable isotopes"> stable isotopes</a>, <a href="https://publications.waset.org/abstracts/search?q=health%20risk" title=" health risk"> health risk</a>, <a href="https://publications.waset.org/abstracts/search?q=mangrove" title=" mangrove"> mangrove</a>, <a href="https://publications.waset.org/abstracts/search?q=food%20web" title=" food web"> food web</a> </p> <a href="https://publications.waset.org/abstracts/58874/evidence-of-total-mercury-biomagnification-in-tropical-estuary-lagoon-in-east-coast-of-peninsula-malaysia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58874.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">308</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">420</span> Increase in the Persistence of Various Invaded Multiplex Metacommunities Induced by Heterogeneity of Motifs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dweepabiswa%20Bagchi">Dweepabiswa Bagchi</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20V.%20Senthilkumar"> D. V. Senthilkumar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Numerous studies have typically demonstrated the devastation of invasions on an isolated ecosystem or, at most, a network of dispersively coupled similar ecosystem patches. Using such a simplistic 2-D network model, one can only consider dispersal coupling and inter-species trophic interactions. However, in a realistic ecosystem, numerous species co-exist and interact trophically and non-trophically in groups of 2 or more. Even different types of dispersal can introduce complexity in an ecological network. Therefore, a more accurate representation of actual ecosystems (or ecological networks) is a complex network consisting of motifs formed by two or more interacting species. Here, the apropos structure of the network should be multiplex or multi-layered. Motifs between different patches or species should be identical within the same layer and vary from one layer to another. This study investigates three distinct ecological multiplex networks facing invasion from one or more external species. This work determines and quantifies the criteria for the increased extinction risk of these networks. The dynamical states of the network with high extinction risk, i.e., the danger states, and those with low extinction risk, i.e., the resistive network states, are both subsequently identified. The analysis done in this study further quantifies the persistence of the entire network corresponding to simultaneous changes in the strength of invasive dispersal and higher-order trophic and non-trophic interactions. This study also demonstrates that the ecosystems enjoy an inherent advantage against invasions due to their multiplex network structure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=increased%20ecosystem%20persistence" title="increased ecosystem persistence">increased ecosystem persistence</a>, <a href="https://publications.waset.org/abstracts/search?q=invasion%20on%20ecosystems" title=" invasion on ecosystems"> invasion on ecosystems</a>, <a href="https://publications.waset.org/abstracts/search?q=multiplex%20networks" title=" multiplex networks"> multiplex networks</a>, <a href="https://publications.waset.org/abstracts/search?q=non-trophic%20interactions" title=" non-trophic interactions"> non-trophic interactions</a> </p> <a href="https://publications.waset.org/abstracts/176495/increase-in-the-persistence-of-various-invaded-multiplex-metacommunities-induced-by-heterogeneity-of-motifs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/176495.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">64</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">419</span> Functional Feeding Groups and Trophic Levels of Benthic Macroinvertebrates Assemblages in Albertine Rift Rivers and Streams in South Western Uganda</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Peace%20Liz%20Sasha%20Musonge">Peace Liz Sasha Musonge</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Behavioral aspects of species nutrition such as feeding methods and food type are archetypal biological traits signifying how species have adapted to their environment. This concept of functional feeding groups (FFG) analysis is currently used to ascertain the trophic levels of the aquatic food web in a specific microhabitat. However, in Eastern Africa, information about the FFG classification of benthic macroinvertebrates in highland rivers and streams is almost absent, and existing studies have fragmented datasets. For this reason, we carried out a robust study to determine the feed type, trophic level and FFGs, of 56 macroinvertebrate taxa (identified to family level) from Albertine rift valley streams. Our findings showed that all five major functional feeding groups were represented; Gatherer Collectors (GC); Predators (PR); shredders (SH); Scrapers (SC); and Filterer collectors. The most dominant functional feeding group was the Gatherer Collectors (GC) that accounted for 53.5% of the total population. The most abundant (GC) families were Baetidae (7813 individuals), Chironomidae NTP (5628) and Caenidae (1848). Majority of the macroinvertebrate population feed on Fine particulate organic matter (FPOM) from the stream bottom. In terms of taxa richness the Predators (PR) had the highest value of 24 taxa and the Filterer Collectors group had the least number of taxa (3). The families that had the highest number of predators (PR) were Corixidae (1024 individuals), Coenagrionidae (445) and Libellulidae (283). However, Predators accounted for only 7.4% of the population. The findings highlighted the functional feeding groups and habitat type of macroinvertebrate communities along an altitudinal gradient. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=trophic%20levels" title="trophic levels">trophic levels</a>, <a href="https://publications.waset.org/abstracts/search?q=functional%20feeding%20groups" title=" functional feeding groups"> functional feeding groups</a>, <a href="https://publications.waset.org/abstracts/search?q=macroinvertebrates" title=" macroinvertebrates"> macroinvertebrates</a>, <a href="https://publications.waset.org/abstracts/search?q=Albertine%20rift" title=" Albertine rift"> Albertine rift</a> </p> <a href="https://publications.waset.org/abstracts/63656/functional-feeding-groups-and-trophic-levels-of-benthic-macroinvertebrates-assemblages-in-albertine-rift-rivers-and-streams-in-south-western-uganda" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63656.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">235</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">418</span> Effect of Urbanization on Basic Environmental Components</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sehba%20Saleem">Sehba Saleem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A country with a spread of only 2.4 percent of the total land surface area of the world, India is home to 17.5 percent of the world population. This fact is sufficient enough to delineate as well as simultaneously bringing to fore the paradox which exists between land and human population. It is evident that the relation which exists between both is an unequal one where the latter has the ability to multiply self, but the former remains constant. This unequal relation that exists has very significantly contributed to the depletion in the quality of land. This is because construction of every kind and nature has been forced on the land to assimilate the ever increasing population which has altered the not only the land but the environment which existed on the land. To get behind this alteration, it becomes imperative to delve into concepts like urbanization, ecology and their amalgam viz. urban ecology. The concept of urban ecology does not only involve study of buildings, flora, and fauna which exists in a given land space. It goes further into establishing a relation between construction on land and the consequent harm, which the same is causing to the environmental resources like air, water etc. This paper shall try cerebrating concepts of urbanization, ecology and urban ecology in the light of relation which exists between man and nature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=asymmetrical%20growth" title="asymmetrical growth">asymmetrical growth</a>, <a href="https://publications.waset.org/abstracts/search?q=environment" title=" environment"> environment</a>, <a href="https://publications.waset.org/abstracts/search?q=urbanisation" title=" urbanisation"> urbanisation</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20space" title=" urban space"> urban space</a> </p> <a href="https://publications.waset.org/abstracts/49633/effect-of-urbanization-on-basic-environmental-components" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49633.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">334</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">417</span> Water Quality Assessment Based on Operational Indicator in West Coastal Water of Malaysia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seyedeh%20Belin%20Tavakoly%20Sany">Seyedeh Belin Tavakoly Sany</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Rosli"> H. Rosli</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Majid"> R. Majid</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Aishah"> S. Aishah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, water monitoring was performed from Nov. 2012 to Oct. 2013 to assess water quality and evaluate the spatial and temporal distribution of physicochemical and biological variables in water. Water samples were collected from 10 coastal water stations of West Port. In the case of water-quality assessment, multi-metric indices and operational indicators have been proposed to classify the trophic status at different stations. The trophic level of West Port coastal water ranges from eutrophic to hypertrophic. Chl-a concentration was used to estimate the biological response of phytoplankton biomass and indicated eutrophic conditions in West Port and mesotrophic conditions at the control site. During the study period, no eutrophication events or secondary symptoms occurred, which may be related to hydrodynamic turbulence and water exchange, which prevent the development of eutrophic conditions in the West Port. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=water%20quality" title="water quality">water quality</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-metric%20indices" title=" multi-metric indices"> multi-metric indices</a>, <a href="https://publications.waset.org/abstracts/search?q=operational%20indicator" title=" operational indicator"> operational indicator</a>, <a href="https://publications.waset.org/abstracts/search?q=Malaysia" title=" Malaysia"> Malaysia</a>, <a href="https://publications.waset.org/abstracts/search?q=West%20Port" title=" West Port"> West Port</a> </p> <a href="https://publications.waset.org/abstracts/54158/water-quality-assessment-based-on-operational-indicator-in-west-coastal-water-of-malaysia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54158.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">296</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">416</span> Ecosystem Approach in Aquaculture: From Experimental Recirculating Multi-Trophic Aquaculture to Operational System in Marsh Ponds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Simide">R. Simide</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Miard"> T. Miard</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Integrated multi-trophic aquaculture (IMTA) is used to reduce waste from aquaculture and increase productivity by co-cultured species. In this study, we designed a recirculating multi-trophic aquaculture system which requires low energy consumption, low water renewal and easy-care. European seabass (Dicentrarchus labrax) were raised with co-cultured sea urchin (Paracentrotus lividus), deteritivorous polychaete fed on settled particulate matter, mussels (Mytilus galloprovincialis) used to extract suspended matters, macroalgae (Ulva sp.) used to uptake dissolved nutrients and gastropod (Phorcus turbinatus) used to clean the series of 4 tanks from fouling. Experiment was performed in triplicate during one month in autumn under an experimental greenhouse at the Institute Océanographique Paul Ricard (IOPR). Thanks to the absence of a physical filter, any pomp was needed to pressure water and the water flow was carried out by a single air-lift followed by gravity flow.Total suspended solids (TSS), biochemical oxygen demand (BOD5), turbidity, phytoplankton estimation and dissolved nutrients (ammonium NH₄, nitrite NO₂⁻, nitrate NO₃⁻ and phosphorus PO₄³⁻) were measured weekly while dissolved oxygen and pH were continuously recorded. Dissolved nutrients stay under the detectable threshold during the experiment. BOD5 decreased between fish and macroalgae tanks. TSS highly increased after 2 weeks and then decreased at the end of the experiment. Those results show that bioremediation can be well used for aquaculture system to keep optimum growing conditions. Fish were the only feeding species by an external product (commercial fish pellet) in the system. The others species (extractive species) were fed from waste streams from the tank above or from Ulva produced by the system for the sea urchin. In this way, between the fish aquaculture only and the addition of the extractive species, the biomass productivity increase by 5.7. In other words, the food conversion ratio dropped from 1.08 with fish only to 0.189 including all species. This experimental recirculating multi-trophic aquaculture system was efficient enough to reduce waste and increase productivity. In a second time, this technology has been reproduced at a commercial scale. The IOPR in collaboration with Les 4 Marais company run for 6 month a recirculating IMTA in 8000 m² of water allocate between 4 marsh ponds. A similar air-lift and gravity recirculating system was design and only one feeding species of shrimp (Palaemon sp.) was growth for 3 extractive species. Thanks to this joint work at the laboratory and commercial scales we will be able to challenge IMTA system and discuss about this sustainable aquaculture technology. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bioremediation" title="bioremediation">bioremediation</a>, <a href="https://publications.waset.org/abstracts/search?q=integrated%20multi-trophic%20aquaculture%20%28IMTA%29" title=" integrated multi-trophic aquaculture (IMTA)"> integrated multi-trophic aquaculture (IMTA)</a>, <a href="https://publications.waset.org/abstracts/search?q=laboratory%20and%20commercial%20scales" title=" laboratory and commercial scales"> laboratory and commercial scales</a>, <a href="https://publications.waset.org/abstracts/search?q=recirculating%20aquaculture" title=" recirculating aquaculture"> recirculating aquaculture</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable" title=" sustainable"> sustainable</a> </p> <a href="https://publications.waset.org/abstracts/90753/ecosystem-approach-in-aquaculture-from-experimental-recirculating-multi-trophic-aquaculture-to-operational-system-in-marsh-ponds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90753.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">152</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">415</span> Trophic Variations in Uptake and Assimilation of Cadmium, Manganese and Zinc: An Estuarine Food-Chain Radiotracer Experiment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20O%E2%80%99Mara">K. O’Mara</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Cresswell"> T. Cresswell</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nearly half of the world’s population live near the coast, and as a result, estuaries and coastal bays in populated or industrialized areas often receive metal pollution. Heavy metals have a chemical affinity for sediment particles and can be stored in estuarine sediments and become biologically available under changing conditions. Organisms inhabiting estuaries can be exposed to metals from a variety of sources including metals dissolved in water, bound to sediment or within contaminated prey. Metal uptake and assimilation responses can vary even between species that are biologically similar, making pollution effects difficult to predict. A multi-trophic level experiment representing a common Eastern Australian estuarine food chain was used to study the sources for Cd, Mn and Zn uptake and assimilation in organisms occupying several trophic levels. Sand cockles (Katelysia scalarina), school prawns (Metapenaeus macleayi) and sand whiting (Sillago ciliata) were exposed to radiolabelled seawater, suspended sediment and food. Three pulse-chase trials on filter-feeding sand cockles were performed using radiolabelled phytoplankton (Tetraselmis sp.), benthic microalgae (Entomoneis sp.) and suspended sediment. Benthic microalgae had lower metal uptake than phytoplankton during labelling but higher cockle assimilation efficiencies (Cd = 51%, Mn = 42%, Zn = 63 %) than both phytoplankton (Cd = 21%, Mn = 32%, Zn = 33%) and suspended sediment (except Mn; (Cd = 38%, Mn = 42%, Zn = 53%)). Sand cockles were also sensitive to uptake of Cd, Mn and Zn dissolved in seawater. Uptake of these metals from the dissolved phase was negligible in prawns and fish, with prawns only accumulating metals during moulting, which were then lost with subsequent moulting in the depuration phase. Diet appears to be the main source of metal assimilation in school prawns, with 65%, 54% and 58% assimilation efficiencies from Cd, Mn and Zn respectively. Whiting fed contaminated prawns were able to exclude the majority of the metal activity through egestion, with only 10%, 23% and 11% assimilation efficiencies from Cd, Mn and Zn respectively. The findings of this study support previous studies that find diet to be the dominant accumulation source for higher level trophic organisms. These results show that assimilation efficiencies can vary depending on the source of exposure; sand cockles assimilated more Cd, Mn, and Zn from the benthic diatom than phytoplankton and assimilation was higher in sand whiting fed prawns compared to artificial pellets. The sensitivity of sand cockles to metal uptake and assimilation from a variety of sources poses concerns for metal availability to predators ingesting the clam tissue, including humans. The high tolerance of sand whiting to these metals is reflected in their widespread presence in Eastern Australian estuaries, including contaminated estuaries such as Botany Bay and Port Jackson. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cadmium" title="cadmium">cadmium</a>, <a href="https://publications.waset.org/abstracts/search?q=food%20chain" title=" food chain"> food chain</a>, <a href="https://publications.waset.org/abstracts/search?q=metal" title=" metal"> metal</a>, <a href="https://publications.waset.org/abstracts/search?q=manganese" title=" manganese"> manganese</a>, <a href="https://publications.waset.org/abstracts/search?q=trophic" title=" trophic"> trophic</a>, <a href="https://publications.waset.org/abstracts/search?q=zinc" title=" zinc"> zinc</a> </p> <a href="https://publications.waset.org/abstracts/77612/trophic-variations-in-uptake-and-assimilation-of-cadmium-manganese-and-zinc-an-estuarine-food-chain-radiotracer-experiment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/77612.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">202</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">414</span> Ecosystem Engineering Strengthens Bottom-Up and Weakens Top-Down Effects via Trait-Mediated Indirect Interactions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zhiwei%20Zhong">Zhiwei Zhong</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofei%20Li"> Xiaofei Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Deli%20Wang"> Deli Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ecosystem engineering is a powerful force shaping community structure and ecosystem function. Yet, very little is known about the mechanisms by which engineers affect vital ecosystem processes like trophic interactions. Here, we examine the potential for a herbivore ecosystem engineer, domestic sheep, to affect trophic interactions between the web-building spider Argiope bruennichi, its grasshopper prey Euchorthippus spp., and the grasshoppers’ host plant Leymus chinensis. By integrating small- and large-scale field experiments, we demonstrate that: 1) moderate sheep grazing changed the structure of plant communities by suppressing strongly interacting forbs within a grassland matrix; 2) this change in plant community structure drove interaction modifications between the grasshoppers and their grass host plants and between grasshoppers and their spider predators, and 3) these interaction modifications were entirely mediated by plasticity in grasshopper behavior. Overall, ecosystem engineering by sheep grazing strengthened bottom-up effects and weakened top-down effects via trait-mediated interactions, resulting in a nearly two-fold increase in grasshopper densities. Interestingly, the grasshopper behavioral shifts which reduced spider per capita predation rates in the microcosms did not translate to reduced spider predation rates at the larger system scale because increased grasshopper densities offset behavioral effects at larger scales. Our findings demonstrate that 1) ecosystem engineering can strongly alter trophic interactions, 2) such effects can be driven by cryptic trait-mediated interactions, and 3) the relative importance of trait- versus density effects as measured by microcosm experiments may not reflect the importance of these processes at realistic ecological scales due to scale-dependent interactions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bottom-up%20effects" title="bottom-up effects">bottom-up effects</a>, <a href="https://publications.waset.org/abstracts/search?q=ecosystem%20engineering" title=" ecosystem engineering"> ecosystem engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=trait-mediated%20indirect%20effects" title=" trait-mediated indirect effects"> trait-mediated indirect effects</a>, <a href="https://publications.waset.org/abstracts/search?q=top-down%20effects" title=" top-down effects"> top-down effects</a> </p> <a href="https://publications.waset.org/abstracts/68635/ecosystem-engineering-strengthens-bottom-up-and-weakens-top-down-effects-via-trait-mediated-indirect-interactions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68635.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">355</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">413</span> Microbial and Meiofaunal Dynamics in the Intertidal Sediments of the Northern Red Sea </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamed%20A.%20El-Serehy">Hamed A. El-Serehy</a>, <a href="https://publications.waset.org/abstracts/search?q=Khaled%20A.%20Al-Rasheid"> Khaled A. Al-Rasheid</a>, <a href="https://publications.waset.org/abstracts/search?q=Fahad%20A%20Al-Misned"> Fahad A Al-Misned</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The meiofaunal population fluctuation, microbial dynamic and the composition of the sedimentary organic matter were investigated seasonally in the Egyptian shores along the northern part of Red Sea. Total meiofaunal population densities were extremely low with an annual average of 109 ±26 ind./10 cm2 and largely dominated by nematodes (on annual average from 52% to 94% of total meiofaunal density). The benthic microbial population densities ranged from 0.26±0.02 x 108 to 102.67±18.62 x 108/g dry sediment. Total sedimentary organic matter concentrations varied between 5.8 and 11.6 mg/g and the organic carbon, which was measured as summation of the carbohydrates, proteins and lipids, accounted for only a small fraction of being 32 % of the total organic matter. Chlorophyll a attained very low values and fluctuated between 2 and 11 µg/g. The very low chlorophyll a concentration in the Egyptian coasts along the Red Sea can suggest that the sedimentary organic matter along the Egyptian coasts is dominated by organic detrital and heterotrophic bacteria on one hand, and do not promote carbon transfer towards the higher trophic level on the other hand. However, the present study indicates that the existing of well diversified meiofaunal group, with a total of ten meiofaunal taxa, can serve as food for higher trophic levels in the Red Sea marine ecosystem. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bacteria" title="bacteria">bacteria</a>, <a href="https://publications.waset.org/abstracts/search?q=meiofauna" title=" meiofauna"> meiofauna</a>, <a href="https://publications.waset.org/abstracts/search?q=intertidal%20sediments" title=" intertidal sediments"> intertidal sediments</a>, <a href="https://publications.waset.org/abstracts/search?q=Red%20Sea" title=" Red Sea"> Red Sea</a> </p> <a href="https://publications.waset.org/abstracts/28432/microbial-and-meiofaunal-dynamics-in-the-intertidal-sediments-of-the-northern-red-sea" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28432.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">423</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">412</span> Agroecology Techniques in Palestine</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rima%20Younis">Rima Younis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Agro-ecology is considered one of the agricultural approaches that is spreading across the world due to the practical solutions it provides that are in harmony with nature. These solutions target many agricultural problems, food production issues, and climate change. Agriculture and fertile soil in particular, play a vital role when it comes to food security and climate change. The organic substances, which mainly consist of carbon, in the soil contribute to the ecological system through 4 elements: Resistance to soil erosion, conserving water in soil, increasing soil fertility, and improving the biodiversity in it. Any small changes to the carbon storage in soil have a tremendous impact on both agricultural productivity and the greenhouse gas cycle, which is what agro-ecology aims to achieve. The importance of agro-ecology lies here, as it helps increase organic matter/carbon in the soil, on an ongoing basis, 15-20 times higher than nature’s rate in producing organic matter. Agro-ecology is set to increase the production of crops free of chemicals, develop organic matter, and establish carbon in soil, thus being a factor in limiting climate change, not just mitigating or adapting. Under the events of the rapid increase in population and the need to feed humans, agro-ecology stands in the first place as it surpasses the productivity of chemical agriculture per unit area, according to international and local experience. The introduction of agro-ecology to Palestine started 15 years ago, with modest beginnings faced with a lot of criticism and opposition, but is currently experiencing rapid growth among farmers and is becoming accepted among specialists. Even though the number of agro-ecologist farmers is still small, it reflects a state of turnover into a more sustainable, less polluting agriculture that works on renewing life and the elements of nature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=toward%20to%20solidarity%20economy" title="toward to solidarity economy">toward to solidarity economy</a>, <a href="https://publications.waset.org/abstracts/search?q=food%20sovereignty" title=" food sovereignty"> food sovereignty</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20introduction%20of%20agro-ecology%20to%20Palestine" title=" the introduction of agro-ecology to Palestine"> the introduction of agro-ecology to Palestine</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20importance%20of%20agro-ecology" title=" the importance of agro-ecology"> the importance of agro-ecology</a> </p> <a href="https://publications.waset.org/abstracts/191529/agroecology-techniques-in-palestine" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/191529.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">25</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">411</span> Sleep Ecology, Sleep Regulation and Behavior Problems in Maltreated Preschoolers: A Scoping Review</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sabrina%20Servot">Sabrina Servot</a>, <a href="https://publications.waset.org/abstracts/search?q=Annick%20St-Amand"> Annick St-Amand</a>, <a href="https://publications.waset.org/abstracts/search?q=Michel%20Rousseau"> Michel Rousseau</a>, <a href="https://publications.waset.org/abstracts/search?q=Valerie%20Simard"> Valerie Simard</a>, <a href="https://publications.waset.org/abstracts/search?q=Evelyne%20Touchette"> Evelyne Touchette</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Child maltreatment has a profound impact on children’s development. In its victims, internalizing and externalizing problems are highly prevalent, and sleep problems are common. Furthermore, the environment they live in is often disorganized, lacking routine and consistency. In non-maltreated children, several studies documented the important role of sleep regulation and sleep ecology. A poor sleep ecology (e.g., lack of sleep hygiene and bedtime routine, inappropriate sleeping location) may lead to sleep regulation problems (e.g., short sleep duration, nocturnal awakenings), and sleep regulation problems may increase the risk of behavior problems. Therefore, this scoping review aims to map evidence about sleep ecology and sleep regulation and the associations between sleep ecology, sleep regulation, and behavior problems in maltreated preschoolers. Literature from 1993 was searched in PsycInfo, Pubmed, Medline, Eric, and Proquest Dissertations and Theses. Articles and thesis were comprehensively reviewed based upon inclusion/exclusion criteria: 1) it concerns maltreated children aged 1-5 years, and 2) it addresses at least one of the following: sleep ecology, sleep regulation, and/or their associations with behavior problems in maltreated preschoolers. From the 650 studies screened, nine of them were included. Data were charted according to study characteristics, nature of variable documented, measures, analyses performed, and results of each study, then synthesized in a narrative summary. The main results show all included articles were quantitative. Foster children samples were used in four studies, children experienced different types of maltreatment in six studies, while one was specifically about sexually abused children. Regarding sleep ecology, only one study describing maltreated preschoolers’ sleep ecology was found, while seven studies documented sleep regulation. Among these seven studies, 17 different sleep variables (e.g., parasomnia, dyssomnia, total 24-h sleep duration) were used, each study documenting from one to nine of them. Actigraphic measures were employed in three studies, the others used parent-reported questionnaires or sleep diaries. Maltreated children’s sleep was described and/or compared to non-maltreated children’s sleep, or an intervention group, showing mild differences. As for associations between sleep regulation and behavior problems, five studies investigated it and performed correlational or linear regression analyses between sleep and behavior problems, revealing some significant associations. No study was found about associations between sleep ecology and sleep regulation, between sleep ecology and behavior problems, or between these three variables. In conclusion, literature about sleep ecology, sleep regulation, and their associations with behavior problems are far more scarce in maltreated preschoolers than in non-maltreated ones. At present, there is especially a paucity of research about sleep ecology and the association between sleep ecology and sleep regulation in maltreated preschoolers, while studies on non-maltreated children showed sleep ecology plays a major role in sleep regulation. In addition, as sleep regulation is measured in many different ways among the studies, it is difficult to compare their findings. Finally, it seems necessary that research fill these gaps, as recommendations could be made to clinicians working with maltreated preschoolers regarding the use of sleep ecology and sleep regulation as intervention tools. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=maltreated%20preschoolers" title="maltreated preschoolers">maltreated preschoolers</a>, <a href="https://publications.waset.org/abstracts/search?q=sleep%20ecology" title=" sleep ecology"> sleep ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=sleep%20regulation" title=" sleep regulation"> sleep regulation</a>, <a href="https://publications.waset.org/abstracts/search?q=behavior%20problems" title=" behavior problems"> behavior problems</a> </p> <a href="https://publications.waset.org/abstracts/131448/sleep-ecology-sleep-regulation-and-behavior-problems-in-maltreated-preschoolers-a-scoping-review" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131448.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">150</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">410</span> Geochemistry of Nutrients in the South Lagoon of Tunis, Northeast of Tunisia, Using Multivariable Methods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abidi%20Myriam">Abidi Myriam</a>, <a href="https://publications.waset.org/abstracts/search?q=Ben%20Amor%20Rim"> Ben Amor Rim</a>, <a href="https://publications.waset.org/abstracts/search?q=Gueddari%20Moncef"> Gueddari Moncef</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Understanding ecosystem response to the restoration project is essential to assess its rehabilitation. Indeed, the time elapsed after restoration is a critical indicator to shows the real of the restoration success. In this order, the south lagoon of Tunis, a shallow Mediterranean coastal area, has witnessed several pollutions. To resolve this environmental problem, a large restoration project of the lagoon was undertaken. In this restoration works, the main changes are the decrease of the residence time of the lagoon water and the nutrient concentrations. In this paper, we attempt to evaluate the trophic state of lagoon water for evaluating the risk of eutrophication after almost 16 years of its restoration. To attend this objectives water quality monitoring was untaken. In order to identify and to analyze the natural and anthropogenic factor governing the nutrients concentrations of lagoon water geochemical methods and multivariate statistical tools were used. Results show that nutrients have duel sources due to the discharge of municipal wastewater of Megrine City in the south side of the lagoon. The Carlson index shows that the South lagoon of Tunis Lagoon Tunis is eutrophic, and may show limited summer anoxia. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=geochemistry" title="geochemistry">geochemistry</a>, <a href="https://publications.waset.org/abstracts/search?q=nutrients" title=" nutrients"> nutrients</a>, <a href="https://publications.waset.org/abstracts/search?q=statistical%20analysis" title=" statistical analysis"> statistical analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20south%20lagoon%20of%20Tunis" title=" the south lagoon of Tunis"> the south lagoon of Tunis</a>, <a href="https://publications.waset.org/abstracts/search?q=trophic%20state" title=" trophic state"> trophic state</a> </p> <a href="https://publications.waset.org/abstracts/73188/geochemistry-of-nutrients-in-the-south-lagoon-of-tunis-northeast-of-tunisia-using-multivariable-methods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/73188.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">187</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">409</span> Industrial Ecology Perspectives of Food Supply Chains: A Framework of Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Luciano%20Batista">Luciano Batista</a>, <a href="https://publications.waset.org/abstracts/search?q=Sylvia%20Saes"> Sylvia Saes</a>, <a href="https://publications.waset.org/abstracts/search?q=Nuno%20Fouto"> Nuno Fouto</a>, <a href="https://publications.waset.org/abstracts/search?q=Liam%20Fassam"> Liam Fassam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper introduces the theoretical and methodological basis of an analytical framework conceived with the purpose of bringing industrial ecology perspectives into the core of the underlying disciplines supporting analyses in studies concerned with environmental sustainability aspects beyond the product cycle in a supply chain. Given the pressing challenges faced by the food sector, the framework focuses upon waste minimization through industrial linkages in food supply chains. The combination of industrial ecology practice with basic LCA elements, the waste hierarchy model, and the spatial scale of industrial symbiosis allows the standardization of qualitative analyses and associated outcomes. Such standardization enables comparative analysis not only between different stages of a supply chain, but also between different supply chains. The analytical approach proposed contributes more coherently to the wider circular economy aspiration of optimizing the flow of goods to get the most out of raw materials and cuts wastes to a minimum. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=by-product%20synergy" title="by-product synergy">by-product synergy</a>, <a href="https://publications.waset.org/abstracts/search?q=food%20supply%20chain" title=" food supply chain"> food supply chain</a>, <a href="https://publications.waset.org/abstracts/search?q=industrial%20ecology" title=" industrial ecology"> industrial ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=industrial%20symbiosis" title=" industrial symbiosis"> industrial symbiosis</a> </p> <a href="https://publications.waset.org/abstracts/20036/industrial-ecology-perspectives-of-food-supply-chains-a-framework-of-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20036.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">420</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">408</span> Effects of Jigsaw Strategy on Senior Secondary School Students’ Achievement in Ecology in Maitagari, Jigawa State, Nigeriaind Out the Effect of Jigsaw Strategy on Students’ Achievement in Ecology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ozoji%20Bernadette">Ozoji Bernadette</a>, <a href="https://publications.waset.org/abstracts/search?q=Sa%E2%80%99Ad-Abdullahi%20Abdulhafiz"> Sa’Ad-Abdullahi Abdulhafiz</a>, <a href="https://publications.waset.org/abstracts/search?q=Izundu%20Chike%20Leo"> Izundu Chike Leo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study investigated the effect of Jigsaw strategy on senior secondary school students’ achievement in Maitagari, Jigawa State, Nigeria. The pre-test, post-test quasi experimental design was employed in the study. The sample for the study comprised 120 students from two public schools from the study area. An instrument namely, Ecological Achievement Test (EAT) was used to collect data from students. The data were analyzed using SPSS version 26.0. The EAT was validated by two experts, one, in Science Education unit and the other in Research, Measurement and Evaluation unit, both in the Faculty of Education, University of Jos, Nigeria. The reliability coefficient of the EAT was established as 0.85 using Kuder Richardson Formular 20. Mean and standard deviation were used to answer two research questions while Analysis of Covariance was used to test two hypotheses that guided the study. Results showed that students taught using jigsaw strategy achieved significantly better than their counterparts taught using the conventional method in ecology. Furthermore, it was revealed that gender had no significant influence on achievement of students exposed to jigsaw strategy. It was concluded that jigsaw strategy was effective in improving students’ achievement in ecology. The study recommended that teachers should incorporate jigsaw strategy into science classrooms for improved achievement outcome and gender equality. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=achievement" title="achievement">achievement</a>, <a href="https://publications.waset.org/abstracts/search?q=ecology" title=" ecology"> ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=jigsaw%20strategy" title=" jigsaw strategy"> jigsaw strategy</a>, <a href="https://publications.waset.org/abstracts/search?q=lecture%20strategy" title=" lecture strategy"> lecture strategy</a> </p> <a href="https://publications.waset.org/abstracts/156037/effects-of-jigsaw-strategy-on-senior-secondary-school-students-achievement-in-ecology-in-maitagari-jigawa-state-nigeriaind-out-the-effect-of-jigsaw-strategy-on-students-achievement-in-ecology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/156037.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">120</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">407</span> The Renewal of Chinese Urban Village on Cultural Ecology: Hubei Village as an Example</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shaojun%20Zheng">Shaojun Zheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Lei%20Xu"> Lei Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yunzi%20Wang"> Yunzi Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main purpose of the research is to use the cultural ecology to analyze the renewal of Shenzhen urban village in the process of China's urbanization and to evaluate and guide the renewal, which will combine the society value and economic efficiency and activate urban villages. The urban village has a long history. There are also many old buildings, various residents, and a strong connection with the surrounding environment. Cultural ecology, which uses the knowledge of ecology to study culture, provides us a cultural perspective in the renewal. We take Hubei village in Shenzhen as our example. By using cultural ecology, we find a new way dealing with the relationship between culture and other factors. It helps us to give the buildings and space the culture meanings from different scales. It enables us to find a unique development pattern of urban village. After analyzing several famous cultural blocks cases, we find it is possible to connect the unique culture of urban village with the renovation of its buildings, community, and commerce. We propose the following strategies with specific target: 1. Building renovation: We repair and rebuild the origin buildings as little as possible, and retain the original urban space tissue as much as possible to keep the original sense of place and the cultural atmosphere. 2. Community upgrade: We reshape the village stream, fix the original function, add event which will activate people to complete the existing cultural circle 3. District commerce: We implant food and drink district, boutique commercial, and creative industries, to make full use of the historical atmosphere of the site to enhance the culture feelings For the renewal of a seemingly chaotic mixed urban village, it is important to break out from the conventional practices of building shopping malls or residential towers. Without creating those building landmarks, cultural ecology activates the urban village by exploiting its unique culture, which makes the old and new combine and becomes a new stream of energy, forming the new cultural, commercial and stylish landmark of the city. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cultural%20ecology" title="cultural ecology">cultural ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20village" title=" urban village"> urban village</a>, <a href="https://publications.waset.org/abstracts/search?q=renewal" title=" renewal"> renewal</a>, <a href="https://publications.waset.org/abstracts/search?q=combination" title=" combination"> combination</a> </p> <a href="https://publications.waset.org/abstracts/47016/the-renewal-of-chinese-urban-village-on-cultural-ecology-hubei-village-as-an-example" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47016.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">392</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">406</span> Exploring the Intrinsic Ecology and Suitable Density of Historic Districts Through a Comparative Analysis of Ancient and Modern Ecological Smart Practices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hu%20Changjuan">Hu Changjuan</a>, <a href="https://publications.waset.org/abstracts/search?q=Gong%20Cong"> Gong Cong</a>, <a href="https://publications.waset.org/abstracts/search?q=Long%20Hao"> Long Hao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Although urban ecological policies and the public's aspiration for livable environments have expedited the pace of ecological revitalization, historic districts that have evolved through natural ecological processes often become obsolete and less habitable amid rapid urbanization. This raises a critical question about historic districts inherently incapable of being ecological and livable. The thriving concept of ‘intrinsic ecology,’ characterized by its ability to transform city-district systems into healthy ecosystems with diverse environments, stable functions, and rapid restoration capabilities, holds potential for guiding the integration of ancient and modern ecological wisdom while supporting the dynamic involvement of cultures. This study explores the intrinsic ecology of historic districts from three aspects: 1) Population Density: By comparing the population density before urban population expansion to the present day, determine the reasonable population density for historic districts. 2) Building Density: Using the ‘Space-mate’ tool for comparative analysis, form a spatial matrix to explore the intrinsic ecology of building density in Chinese historic districts. 3) Green Capacity Ratio: By using ecological districts as control samples, conduct dual comparative analyses (related comparison and upgraded comparison) to determine the intrinsic ecological advantages of the two-dimensional and three-dimensional green volume in historic districts. The study inform a density optimization strategy that supports cultural, social, natural, and economic ecology, contributing to the creation of eco-historic districts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=eco-historic%20districts" title="eco-historic districts">eco-historic districts</a>, <a href="https://publications.waset.org/abstracts/search?q=intrinsic%20ecology" title=" intrinsic ecology"> intrinsic ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=suitable%20density" title=" suitable density"> suitable density</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20capacity%20ratio." title=" green capacity ratio."> green capacity ratio.</a> </p> <a href="https://publications.waset.org/abstracts/189342/exploring-the-intrinsic-ecology-and-suitable-density-of-historic-districts-through-a-comparative-analysis-of-ancient-and-modern-ecological-smart-practices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/189342.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">23</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">405</span> Cold Stunned Sea Turtle Diet Analysis In Cape Cod Bay from 2015-2020</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lucille%20McWilliams">Lucille McWilliams</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As water temperatures drop in November, Kemp’s Ridley, Loggerhead, and Green sea turtles cold-stun in Cape Cod Bay. The foraging ecology of these sea turtles remains an understudied area of research. In this study, we aim to assess the diet of these turtles using a multi-tissue stable isotope analysis of cold-stunned kemp’s ridley, loggerhead, and green sea turtles stranded from 2015 to 2020. Stable isotope ratios of carbon and nitrogen were measured in blood, front and rear flipper, liver, muscle, skin, and scute tissue samples. We predict an elevated level of Nitrogen isotope ratios in kemp’s ridley and loggerhead turtles compared to green turtles due to the carnivorous loggerheads and kemp ridleys’ carnivorous diet and the greens herbivorous diet. We anticipate empty stomachs due to starvation while stranded, and a variety of foraging strategies, migration patterns, and trophic positions between these species. Data collected from this study will add to the knowledge of these turtles’ prey species and aid managers in the preservation of these species as a mitigation strategy for these turtles' extinction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sea%20turtles" title="sea turtles">sea turtles</a>, <a href="https://publications.waset.org/abstracts/search?q=kemp%27s%20ridleys" title=" kemp's ridleys"> kemp's ridleys</a>, <a href="https://publications.waset.org/abstracts/search?q=greens" title=" greens"> greens</a>, <a href="https://publications.waset.org/abstracts/search?q=loggerheads" title=" loggerheads"> loggerheads</a>, <a href="https://publications.waset.org/abstracts/search?q=cold-stunning" title=" cold-stunning"> cold-stunning</a>, <a href="https://publications.waset.org/abstracts/search?q=diet%20analysis" title=" diet analysis"> diet analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=stable%20isotope%20analysis" title=" stable isotope analysis"> stable isotope analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20science" title=" environmental science"> environmental science</a>, <a href="https://publications.waset.org/abstracts/search?q=marine%20biology" title=" marine biology"> marine biology</a> </p> <a href="https://publications.waset.org/abstracts/146703/cold-stunned-sea-turtle-diet-analysis-in-cape-cod-bay-from-2015-2020" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146703.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">119</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">404</span> Ecological and Economical Indicators of Successful Community Based Forest Management: A Case of Lowland Community Forestry in Nepal</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bikram%20Jung%20Kunwar">Bikram Jung Kunwar</a>, <a href="https://publications.waset.org/abstracts/search?q=Pralhad%20Kunwor"> Pralhad Kunwor</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Community-Based Forest Management (CBFM) approach is often glorified as the best forest management alternatives in the developing countries. However, how the approach has been understood by the local user households, who implement it is remained unanswered for many planners, policy makers, and sometimes researcher as well. The study attempts to assess the understanding of ecology and economics of CBFM in Nepal, where community forest program has been implemented since the 1970s. In order to understand the impacts of the program, eight criteria and sixteen indicators for ecological conservation and similarly same number of criteria and indicators for socio-economic impacts of the program were designed and compared between before and after the program implementation. The community forestry program has positive effects in forest ecology conservation and at the same time rural livelihood improvement of local people. The study revealed that collective understanding of forest ecology and economics leads the CBFM approach towards the sustainability of the program in a win-win situation. The recommendations of the study are expected to be useful to natural resource managers, planners, and policy makers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=community" title="community">community</a>, <a href="https://publications.waset.org/abstracts/search?q=forest%20management" title=" forest management"> forest management</a>, <a href="https://publications.waset.org/abstracts/search?q=ecology" title=" ecology"> ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=economics" title=" economics"> economics</a>, <a href="https://publications.waset.org/abstracts/search?q=Nepal" title=" Nepal"> Nepal</a> </p> <a href="https://publications.waset.org/abstracts/26600/ecological-and-economical-indicators-of-successful-community-based-forest-management-a-case-of-lowland-community-forestry-in-nepal" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26600.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">394</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">403</span> Identification of Microbial Community in an Anaerobic Reactor Treating Brewery Wastewater</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abimbola%20M.%20Enitan">Abimbola M. Enitan</a>, <a href="https://publications.waset.org/abstracts/search?q=John%20O.%20Odiyo"> John O. Odiyo</a>, <a href="https://publications.waset.org/abstracts/search?q=Feroz%20M.%20Swalaha"> Feroz M. Swalaha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study of microbial ecology and their function in anaerobic digestion processes are essential to control the biological processes. This is to know the symbiotic relationship between the microorganisms that are involved in the conversion of complex organic matter in the industrial wastewater to simple molecules. In this study, diversity and quantity of bacterial community in the granular sludge taken from the different compartments of a full-scale upflow anaerobic sludge blanket (UASB) reactor treating brewery wastewater was investigated using polymerase chain reaction (PCR) and real-time quantitative PCR (qPCR). The phylogenetic analysis showed three major eubacteria phyla that belong to <em>Proteobacteria, Firmicutes </em>and<em> Chloroflexi</em> in the full-scale UASB reactor, with different groups populating different compartment. The result of qPCR assay showed high amount of eubacteria with increase in concentration along the reactor’s compartment. This study extends our understanding on the diverse, topological distribution and shifts in concentration of microbial communities in the different compartments of a full-scale UASB reactor treating brewery wastewater. The colonization and the trophic interactions among these microbial populations in reducing and transforming complex organic matter within the UASB reactors were established. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bacteria" title="bacteria">bacteria</a>, <a href="https://publications.waset.org/abstracts/search?q=brewery%20wastewater" title=" brewery wastewater"> brewery wastewater</a>, <a href="https://publications.waset.org/abstracts/search?q=real-time%20quantitative%20PCR" title=" real-time quantitative PCR"> real-time quantitative PCR</a>, <a href="https://publications.waset.org/abstracts/search?q=UASB%20reactor" title=" UASB reactor"> UASB reactor</a> </p> <a href="https://publications.waset.org/abstracts/79480/identification-of-microbial-community-in-an-anaerobic-reactor-treating-brewery-wastewater" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79480.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">258</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">402</span> Environmental Resilience in Sustainability Outcomes of Spatial-Economic Model Structure on the Topology of Construction Ecology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Moustafa%20Osman%20Mohammed">Moustafa Osman Mohammed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The resilient and sustainable of construction ecology is essential to world’s socio-economic development. Environmental resilience is crucial in relating construction ecology to topology of spatial-economic model. Sustainability of spatial-economic model gives attention to green business to comply with Earth’s System for naturally exchange patterns of ecosystems. The systems ecology has consistent and periodic cycles to preserve energy and materials flow in Earth’s System. When model structure is influencing communication of internal and external features in system networks, it postulated the valence of the first-level spatial outcomes (i.e., project compatibility success). These instrumentalities are dependent on second-level outcomes (i.e., participant security satisfaction). These outcomes of model are based on measuring database efficiency, from 2015 to 2025. The model topology has state-of-the-art in value-orientation impact and correspond complexity of sustainability issues (e.g., build a consistent database necessary to approach spatial structure; construct the spatial-economic model; develop a set of sustainability indicators associated with model; allow quantification of social, economic and environmental impact; use the value-orientation as a set of important sustainability policy measures), and demonstrate environmental resilience. The model is managing and developing schemes from perspective of multiple sources pollutants through the input–output criteria. These criteria are evaluated the external insertions effects to conduct Monte Carlo simulations and analysis for using matrices in a unique spatial structure. The balance “equilibrium patterns” such as collective biosphere features, has a composite index of the distributed feedback flows. These feedback flows have a dynamic structure with physical and chemical properties for gradual prolong of incremental patterns. While these structures argue from system ecology, static loads are not decisive from an artistic/architectural perspective. The popularity of system resilience, in the systems structure related to ecology has not been achieved without the generation of confusion and vagueness. However, this topic is relevant to forecast future scenarios where industrial regions will need to keep on dealing with the impact of relative environmental deviations. The model attempts to unify analytic and analogical structure of urban environments using database software to integrate sustainability outcomes where the process based on systems topology of construction ecology. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=system%20ecology" title="system ecology">system ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=construction%20ecology" title=" construction ecology"> construction ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=industrial%20ecology" title=" industrial ecology"> industrial ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=spatial-economic%20model" title=" spatial-economic model"> spatial-economic model</a>, <a href="https://publications.waset.org/abstracts/search?q=systems%20topology" title=" systems topology"> systems topology</a> </p> <a href="https://publications.waset.org/abstracts/192670/environmental-resilience-in-sustainability-outcomes-of-spatial-economic-model-structure-on-the-topology-of-construction-ecology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/192670.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">19</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">401</span> A Laboratory–Designed Activity in Ecology to Demonstrate the Allelopathic Property of the Philippine Chromolaena odorata L. (King and Robinson) Leaf Extracts</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lina%20T.%20Codilla">Lina T. Codilla</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study primarily designed a laboratory activity in ecology to demonstrate the allelopathic property of the Philippine Chromolaena odorata L. (hagonoy) leaf extracts to Lycopersicum esculentum (M), commonly known as tomatoes. Ethanol extracts of C. odorata leaves were tested on seed germination and seedling growth of L. esculentum in 7-day and 14-day observation periods. Analysis of variance and Tukey’s HSD post hoc test was utilized to determine differences among treatments while Pre–test – Post–test experimental design was utilized in the determination of the effectiveness of the designed laboratory activity. Results showed that the 0.5% concentration level of ethanol leaf extracts significantly inhibited germination and seedling growth of L. esculentum in both observation periods. These results were used as the basis in the development of instructional material in ecology. The laboratory activity underwent face validation by five (5) experts in various fields of specialization, namely, Biological Sciences, Chemistry and Science Education. The readability of the designed laboratory activity was determined using a Cloze Test. Pilot testing was conducted and showed that the laboratory activity developed is found to be a very effective tool in supplementing learning about allelopathy in ecology class. Thus, it is recommended for use among ecology classes but modification will be made in a small – scale basis to minimize time consumption. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=allelopathy" title="allelopathy">allelopathy</a>, <a href="https://publications.waset.org/abstracts/search?q=chromolaena%20odorata%20l.%20%28hagonoy%29" title=" chromolaena odorata l. (hagonoy)"> chromolaena odorata l. (hagonoy)</a>, <a href="https://publications.waset.org/abstracts/search?q=designed-laboratory%20activity" title=" designed-laboratory activity"> designed-laboratory activity</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20herbicide%20students%E2%80%99%20performance" title=" organic herbicide students’ performance"> organic herbicide students’ performance</a> </p> <a href="https://publications.waset.org/abstracts/49370/a-laboratory-designed-activity-in-ecology-to-demonstrate-the-allelopathic-property-of-the-philippine-chromolaena-odorata-l-king-and-robinson-leaf-extracts" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49370.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">294</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">400</span> Engineering Topology of Construction Ecology in Urban Environments: Suez Canal Economic Zone</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Moustafa%20Osman%20Mohammed">Moustafa Osman Mohammed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Integration sustainability outcomes give attention to construction ecology in the design review of urban environments to comply with Earth’s System that is composed of integral parts of the (i.e., physical, chemical and biological components). Naturally, exchange patterns of industrial ecology have consistent and periodic cycles to preserve energy flows and materials in Earth’s System. When engineering topology is affecting internal and external processes in system networks, it postulated the valence of the first-level spatial outcome (i.e., project compatibility success). These instrumentalities are dependent on relating the second-level outcome (i.e., participant security satisfaction). Construction ecology approach feedback energy from resources flows between biotic and abiotic in the entire Earth’s ecosystems. These spatial outcomes are providing an innovation, as entails a wide range of interactions to state, regulate and feedback “topology” to flow as “interdisciplinary equilibrium” of ecosystems. The interrelation dynamics of ecosystems are performing a process in a certain location within an appropriate time for characterizing their unique structure in “equilibrium patterns”, such as biosphere and collecting a composite structure of many distributed feedback flows. These interdisciplinary systems regulate their dynamics within complex structures. These dynamic mechanisms of the ecosystem regulate physical and chemical properties to enable a gradual and prolonged incremental pattern to develop a stable structure. The engineering topology of construction ecology for integration sustainability outcomes offers an interesting tool for ecologists and engineers in the simulation paradigm as an initial form of development structure within compatible computer software. This approach argues from ecology, resource savings, static load design, financial other pragmatic reasons, while an artistic/architectural perspective, these are not decisive. The paper described an attempt to unify analytic and analogical spatial modeling in developing urban environments as a relational setting, using optimization software and applied as an example of integrated industrial ecology where the construction process is based on a topology optimization approach. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=construction%20ecology" title="construction ecology">construction ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=industrial%20ecology" title=" industrial ecology"> industrial ecology</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20topology" title=" urban topology"> urban topology</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20planning" title=" environmental planning"> environmental planning</a> </p> <a href="https://publications.waset.org/abstracts/146423/engineering-topology-of-construction-ecology-in-urban-environments-suez-canal-economic-zone" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146423.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">130</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=trophic%20ecology&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=trophic%20ecology&page=3">3</a></li> <li class="page-item"><a class="page-link" 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