Carbon steady-state model of the planktonic food web of Lake Biwa, Japan |
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| Authors: | NATHALIE NIQUIL GRETTA BARTOLI JOTARO URABE GEORGE A. JACKSON LOUIS LEGENDRE CHRISTINE DUPUY M. KUMAGAI |
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| Affiliation: | Centre de Recherche sur les Ecosystèmes Littoraux Anthropisés, Universitéde La Rochelle, La Rochelle, France; Institut für Geowissenschaften, Universität Kiel, Kiel, Germany; Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University Biological Buildings, Aoba, Sendai, Japan; Department of Oceanography, College of Geosciences, Texas A&M University, College Station, TX, U.S.A.; Laboratoire d'Océanographie de Villefranche, Villefranche-sur-Mer, France; Lake Biwa Environmental Research Institute, Otsu, Shiga, Japan |
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| Abstract: | 1. A steady‐state model of carbon flows was developed to describe the summer planktonic food web in the surface mixed‐layer of the North Basin in Lake Biwa, Japan. This model synthesised results from numerous studies on the plankton of Lake Biwa. 2. An inverse analysis procedure was used to estimate missing flow values in a manner consistent with known information. Network analysis was applied to characterise emergent properties of the resulting food web. 3. The system strongly relied on flows related to detrital particles. Whereas primary production was mainly by phytoplankton >20 μm, microzooplankton were active and mainly ingested detritus and bacteria. 4. The main emergent property of the system was strong recycling, through either direct ingestion of non‐living material by zooplankton, or ingestion of bacteria after degradation of detritus to release dissolved organic carbon. |
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| Keywords: | detritus food web lake plankton static model |
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