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Carbon steady‐state model of the planktonic food web of Lake Biwa, Japan
Author(s) -
NIQUIL NATHALIE,
BARTOLI GRETTA,
URABE JOTARO,
JACKSON GEORGE A.,
LEGENDRE LOUIS,
DUPUY CHRISTINE,
KUMAGAI M.
Publication year - 2006
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.2006.01595.x
Subject(s) - food web , plankton , phytoplankton , zooplankton , detritus , environmental science , trophic level , oceanography , microbial food web , carbon fibers , ecology , biology , nutrient , geology , computer science , algorithm , composite number
Summary 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 μ m, 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.