Lake size, macrophytes, and omnivory contribute to food web linkage in temperate shallow eutrophic lakes
Physical, chemical and biological processes facilitate cross-habitat connections in lakes, prompting food webs to be supported by different subsidies. We tested the hypothesis that the pelagic food web is subsidized by littoral resources and fish foraging behaviour plays a major role in carbon flux...
| Autores principales: | , , , , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00188158_v818_n1_p87_GonzalezSagrario |
| Aporte de: |
| id |
todo:paper_00188158_v818_n1_p87_GonzalezSagrario |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_00188158_v818_n1_p87_GonzalezSagrario2023-10-03T14:16:13Z Lake size, macrophytes, and omnivory contribute to food web linkage in temperate shallow eutrophic lakes González Sagrario, M.A. Rodríguez Golpe, D. La Sala, L. Sánchez Vuichard, G. Minotti, P. Panarello, H.O. Carbon stable isotope Fish Macroinvertebrates Nitrogen stable isotopes carbon isotope diet eutrophic environment fish food web foraging behavior habitat structure lake littoral environment macroinvertebrate nitrogen isotope omnivory pelagic environment shallow water stable isotope temperate environment Physical, chemical and biological processes facilitate cross-habitat connections in lakes, prompting food webs to be supported by different subsidies. We tested the hypothesis that the pelagic food web is subsidized by littoral resources and fish foraging behaviour plays a major role in carbon flux and on food web structure in shallow hypereutrophic lakes. We performed a fish diet and carbon and nitrogen isotope analyses to predict the linkage between littoral and pelagic habitats in three shallow hypereutrophic lakes. Lakes differed in morphology, fetch, macrophyte composition and width of the littoral zone. δ13C signals of seston differed among lakes, but were similar to other producers. Macroinvertebrates and fish carbon signatures were more enriched in the lake co-dominated by emergent and submerged vegetation. Fish foraging behaviour indicates that more than the 80% of the carbon that sustain adult fish was channelled from the littoral. In conclusion, littoral carbon were relevant and sustain, in part, food web in these shallow lakes. Factors like the extension of the littoral zone, lake morphometry, and the dominance of multi-chain omnivorous fish facilitate the connection among lake compartments and the transference of littoral carbon to lake food web. © 2018, Springer International Publishing AG, part of Springer Nature. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00188158_v818_n1_p87_GonzalezSagrario |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Carbon stable isotope Fish Macroinvertebrates Nitrogen stable isotopes carbon isotope diet eutrophic environment fish food web foraging behavior habitat structure lake littoral environment macroinvertebrate nitrogen isotope omnivory pelagic environment shallow water stable isotope temperate environment |
| spellingShingle |
Carbon stable isotope Fish Macroinvertebrates Nitrogen stable isotopes carbon isotope diet eutrophic environment fish food web foraging behavior habitat structure lake littoral environment macroinvertebrate nitrogen isotope omnivory pelagic environment shallow water stable isotope temperate environment González Sagrario, M.A. Rodríguez Golpe, D. La Sala, L. Sánchez Vuichard, G. Minotti, P. Panarello, H.O. Lake size, macrophytes, and omnivory contribute to food web linkage in temperate shallow eutrophic lakes |
| topic_facet |
Carbon stable isotope Fish Macroinvertebrates Nitrogen stable isotopes carbon isotope diet eutrophic environment fish food web foraging behavior habitat structure lake littoral environment macroinvertebrate nitrogen isotope omnivory pelagic environment shallow water stable isotope temperate environment |
| description |
Physical, chemical and biological processes facilitate cross-habitat connections in lakes, prompting food webs to be supported by different subsidies. We tested the hypothesis that the pelagic food web is subsidized by littoral resources and fish foraging behaviour plays a major role in carbon flux and on food web structure in shallow hypereutrophic lakes. We performed a fish diet and carbon and nitrogen isotope analyses to predict the linkage between littoral and pelagic habitats in three shallow hypereutrophic lakes. Lakes differed in morphology, fetch, macrophyte composition and width of the littoral zone. δ13C signals of seston differed among lakes, but were similar to other producers. Macroinvertebrates and fish carbon signatures were more enriched in the lake co-dominated by emergent and submerged vegetation. Fish foraging behaviour indicates that more than the 80% of the carbon that sustain adult fish was channelled from the littoral. In conclusion, littoral carbon were relevant and sustain, in part, food web in these shallow lakes. Factors like the extension of the littoral zone, lake morphometry, and the dominance of multi-chain omnivorous fish facilitate the connection among lake compartments and the transference of littoral carbon to lake food web. © 2018, Springer International Publishing AG, part of Springer Nature. |
| format |
JOUR |
| author |
González Sagrario, M.A. Rodríguez Golpe, D. La Sala, L. Sánchez Vuichard, G. Minotti, P. Panarello, H.O. |
| author_facet |
González Sagrario, M.A. Rodríguez Golpe, D. La Sala, L. Sánchez Vuichard, G. Minotti, P. Panarello, H.O. |
| author_sort |
González Sagrario, M.A. |
| title |
Lake size, macrophytes, and omnivory contribute to food web linkage in temperate shallow eutrophic lakes |
| title_short |
Lake size, macrophytes, and omnivory contribute to food web linkage in temperate shallow eutrophic lakes |
| title_full |
Lake size, macrophytes, and omnivory contribute to food web linkage in temperate shallow eutrophic lakes |
| title_fullStr |
Lake size, macrophytes, and omnivory contribute to food web linkage in temperate shallow eutrophic lakes |
| title_full_unstemmed |
Lake size, macrophytes, and omnivory contribute to food web linkage in temperate shallow eutrophic lakes |
| title_sort |
lake size, macrophytes, and omnivory contribute to food web linkage in temperate shallow eutrophic lakes |
| url |
http://hdl.handle.net/20.500.12110/paper_00188158_v818_n1_p87_GonzalezSagrario |
| work_keys_str_mv |
AT gonzalezsagrarioma lakesizemacrophytesandomnivorycontributetofoodweblinkageintemperateshalloweutrophiclakes AT rodriguezgolped lakesizemacrophytesandomnivorycontributetofoodweblinkageintemperateshalloweutrophiclakes AT lasalal lakesizemacrophytesandomnivorycontributetofoodweblinkageintemperateshalloweutrophiclakes AT sanchezvuichardg lakesizemacrophytesandomnivorycontributetofoodweblinkageintemperateshalloweutrophiclakes AT minottip lakesizemacrophytesandomnivorycontributetofoodweblinkageintemperateshalloweutrophiclakes AT panarelloho lakesizemacrophytesandomnivorycontributetofoodweblinkageintemperateshalloweutrophiclakes |
| _version_ |
1807322687277629440 |