Stable isotope proxies for evaluating biodiversity in stream biota |
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| Institution: | 1. IMAR – Institute of Marine Research, Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal;2. Centro de Oceanografia, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;3. Portuguese Hydrographic Institute, Rua das Trinas, 1249-093 Lisboa, Portugal;4. Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;1. Bingen University of Applied Sciences, Berlin Str. 109, Bingen, 55411, Germany;2. Northern Forestry Centre, Canadian Forest Service, 5320 122nd Street Edmonton, AB, T6 H 3S5, Canada;3. Institute of Physiocochemical and Biological Problems of Soil Science, Russian Academy of Sciences, Institutskaya 2, Pushchino, Moscow oblast, 142290, Russia;4. Carl von Ossietzky Univesrsity of Oldenburg, Ammerländer Heerstraße 114-118, 26129, Oldenburg, Germany;1. Department of Ecology, School of Biology, Aristotle University, Thessaloniki, Greece;2. Department of Environmental and Natural Resources Management, University of Patras, Greece;1. Center for Ecological Forecasting and Global Change, College of Forestry, Northwest A&F University, Yangling 712100, China;2. Institute of Environment Sciences, Department of Biology Sciences, University of Quebec at Montreal, Case Postale 8888, Succursale Centre-Ville, Montreal Quebec H3C 3P8, Canada;1. Integrative Oceanography Division and Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, 92093, USA;2. Department of Civil Engineering and Monash Water for Liveability, 23 College Walk, Monash University, Victoria, Australia;3. Department of Civil and Environmental Engineering, Henry Samueli School of Engineering, University of California, Irvine, Irvine, CA, 92697, USA;4. Department of Environmental Health Sciences, University of California, Los Angeles, Los Angeles, CA, 90095, USA;1. Université de Toulouse, Labo Evolution & Diversité Biologique, UMR5174 EDB CNRS – Université Paul Sabatier-ENFA, F-31062 Toulouse, France;2. Faculty of Agriculture and Food Processing, University of Battambang, Raod 5, Battambang city, Cambodia;3. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China |
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| Abstract: | Differences in δ13C and δ15N values in stream biota are caused by several environmental conditions. Variations in abundance, species richness and the assemblage structure of stream biota are also caused by several environmental conditions. Hence, abundance, species richness and the assemblage structure of stream biota are expected to be strongly correlated with the differences in value of stable isotopes. In this study, the gaps in δ13C and δ15N between periphyton and charr are discussed in terms of the abundance, genus richness, and assemblage of benthic invertebrates at each site. Gaps in δ13C between periphyton and charr were strongly correlated with some aspects of mountainous area and the genus richness of benthic invertebrates at each site. The gaps in δ15N between periphyton and charr were strongly correlated with the abundance and assemblage structure of benthic invertebrates at the location tested. The δ13C values of predators were correlated with some aspects of mountainous area and the assemblage structure of the benthic invertebrates. The δ15N values of predators were correlated with genus richness and the assemblage structure of the benthic invertebrates. These results suggest that the value gaps in δ13C and δ15N can be used to assess biodiversity and could provide indices for estimating the biodiversity in a stream. |
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| Keywords: | Aquatic invertebrate Assemblage Biodiversity Charr Periphyron |
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