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Title: Zooplankton, phytoplankton and the microbial food web in two turbid and two clearwater shallow lakes in Belgium
Authors: Muylaert, Koenraad ×
Declerck, Steven
Geenens, V
Van Wichelen, J
Degans, H
Vandekerkhove, Jochen
Van der Gucht, K
Vloemans, N
Rommens, Wouter
Rejas, D
Urrutia, R
Sabbe, K
Gillis, M
Decleer, K
De Meester, Luc
Vyverman, W #
Issue Date: Apr-2003
Publisher: Kluwer academic publ
Series Title: Aquatic ecology vol:37 issue:2 pages:137-150
Abstract: Components of the pelagic food web in four eutrophic shallow lakes in two wetland reserves in Belgium ('Blankaart' and 'De Maten') were monitored during the course of 1998-1999. In each wetland reserve, a clearwater and a turbid lake were sampled. The two lakes in each wetland reserve had similar nutrient loadings and occurred in close proximity of each other. In accordance with the alternative stable states theory, food web structure differed strongly between the clearwater and turbid lakes. Phytoplankton biomass was higher in the turbid than the clearwater lakes. Whereas chlorophytes dominated the phytoplankton in the turbid lakes, cryptophytes were the most important phytoplankton group in the clearwater lakes. The biomass of microheterotrophs (bacteria, heterotrophic nanoflagellates and ciliates) was higher in the turbid than the clearwater lakes. Biomass and community composition of micro- and macrozooplankton was not clearly related to water clarity. The ratio of macrozooplankton to phytoplankton biomass - an indicator of zooplankton grazing pressure on phytoplankton was higher in the clearwater when compared to the turbid lakes. The factors potentially regulating water clarity, phytoplankton, microheterotrophs and macrozooplankton are discussed. Implications for the management of these lakes are discussed.
URI: 
ISSN: 1386-2588
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Ecology, Evolution and Biodiversity Conservation Section
Plant Systematics and Ecology Section - miscellaneous
Faculty of Science, Campus Kulak Kortrijk
× corresponding author
# (joint) last author

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