دورية أكاديمية
Anthropogenic Eutrophication Drives Major Food Web Changes in Mwanza Gulf, Lake Victoria.
| العنوان: | Anthropogenic Eutrophication Drives Major Food Web Changes in Mwanza Gulf, Lake Victoria. |
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| المؤلفون: | King L; Department of Fish Ecology and Evolution, Swiss Federal Institute for Aquatic Science and Technology (EAWAG), Kastanienbaum, Dübendorf, Switzerland.; Aquatic Ecology and Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland., Wienhues G; Institute of Geography and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland., Misra P; Department of Fish Ecology and Evolution, Swiss Federal Institute for Aquatic Science and Technology (EAWAG), Kastanienbaum, Dübendorf, Switzerland.; Aquatic Ecology and Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland., Tylmann W; Faculty of Oceanography and Geography, University of Gdańsk, Gdańsk, Poland., Lami A; National Research Council Water Research Institute (IRSA), Verbania, Italy., Bernasconi SM; Department of Earth Sciences, ETH Zürich, Zurich, Switzerland., Jaggi M; Department of Earth Sciences, ETH Zürich, Zurich, Switzerland., Courtney-Mustaphi C; Department of Environmental Sciences, University of Basel, Basel, Switzerland.; Nelson Mandela African Institution of Science and Technology (NM-AIST), Arusha, Tanzania., Muschick M; Department of Fish Ecology and Evolution, Swiss Federal Institute for Aquatic Science and Technology (EAWAG), Kastanienbaum, Dübendorf, Switzerland.; Aquatic Ecology and Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland., Ngoepe N; Department of Fish Ecology and Evolution, Swiss Federal Institute for Aquatic Science and Technology (EAWAG), Kastanienbaum, Dübendorf, Switzerland.; Aquatic Ecology and Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland., Mwaiko S; Department of Fish Ecology and Evolution, Swiss Federal Institute for Aquatic Science and Technology (EAWAG), Kastanienbaum, Dübendorf, Switzerland.; Aquatic Ecology and Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland., Kishe MA; Tanzania Fisheries Research Institute (TAFIRI), Dar es Salaam, Tanzania., Cohen A; Department of Geosciences, University of Arizona, Tucson, Arizona USA., Heiri O; Department of Environmental Sciences, University of Basel, Basel, Switzerland., Seehausen O; Department of Fish Ecology and Evolution, Swiss Federal Institute for Aquatic Science and Technology (EAWAG), Kastanienbaum, Dübendorf, Switzerland.; Aquatic Ecology and Evolution, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland., Vogel H; Institute of Geological Sciences and Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland., Grosjean M; Institute of Geography and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland., Matthews B; Department of Fish Ecology and Evolution, Swiss Federal Institute for Aquatic Science and Technology (EAWAG), Kastanienbaum, Dübendorf, Switzerland. |
| المصدر: | Ecosystems (New York, N.Y.) [Ecosystems] 2024; Vol. 27 (4), pp. 577-591. Date of Electronic Publication: 2024 May 13. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Springer Country of Publication: United States NLM ID: 100955213 Publication Model: Print-Electronic Cited Medium: Print ISSN: 1432-9840 (Print) Linking ISSN: 14329840 NLM ISO Abbreviation: Ecosystems Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Original Publication: New York, N.Y. : Springer, 1998- |
| مستخلص: | Discerning ecosystem change and food web dynamics underlying anthropogenic eutrophication and the introduction of non-native species is necessary for ensuring the long-term sustainability of fisheries and lake biodiversity. Previous studies of eutrophication in Lake Victoria, eastern Africa, have focused on the loss of endemic fish biodiversity over the past several decades, but changes in the plankton communities over this same time remain unclear. To fill this gap, we examined sediment cores from a eutrophic embayment, Mwanza Gulf, to determine the timing and magnitude of changes in the phytoplankton and zooplankton assemblages over the past century. Biogeochemical proxies indicate nutrient enrichment began around ~ 1920 CE and led to rapid increases in primary production, and our analysis of photosynthetic pigments revealed three zones: pre-eutrophication (prior to 1920 CE), onset of eutrophication with increases in all pigments (1920-1990 CE), and sustained eutrophication with cyanobacterial dominance (1990 CE-present). Cladoceran remains indicate an abrupt decline in biomass in ~ 1960 CE, in response to the cumulative effects of eutrophication and lake-level rise, preceding the collapse of haplochromine cichlids in the 1980s. Alona and Chydorus , typically benthic littoral taxa, have remained at relatively low abundances since the 1960s, whereas the abundance of Bosmina, typically a planktonic taxon, increased in the 1990s concurrently with the biomass recovery of haplochromine cichlid fishes. Overall, our results demonstrate substantial changes over the past century in the biomass structure and taxonomic composition of Mwanza Gulf phytoplankton and zooplankton communities, providing a historical food web perspective that can help understand the recent changes and inform future resource management decisions in the Lake Victoria ecosystem. Supplementary Information: The online version contains supplementary material available at 10.1007/s10021-024-00908-x. Competing Interests: Conflict of interestThe authors declare that they have no conflict of interest. (© The Author(s) 2024.) |
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| فهرسة مساهمة: | Keywords: cladocera; eutrophication; food web; paleolimnology; photosynthetic pigments; tropical lake |
| تواريخ الأحداث: | Date Created: 20240620 Latest Revision: 20240621 |
| رمز التحديث: | 20240621 |
| مُعرف محوري في PubMed: | PMC11182866 |
| DOI: | 10.1007/s10021-024-00908-x |
| PMID: | 38899133 |
| قاعدة البيانات: | MEDLINE |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 1432-9840 |
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| DOI: | 10.1007/s10021-024-00908-x |