CS39A Zooplankton - Feeding, Reproduction, Growth and Molecular Diversity
Date: Tuesday, June 11, 2002
Time: 10:15:00 AM
Location: View Royal
 
BillionesRG, Dept. of Ecology and Evolution, J.W.G. University of Frankfurt, Frankfurt am Main, Germany, r.billiones@zoology.uni-frankfurt.de
Declerck, S, , Laboratory of Aquatic Ecology, Catholic University of Leuven, Leuven, Belgium, 
Jeppesen, E, , Dept. of Lake and Estuarine Ecology, Silkeborg, Denmark, 
De Meester, L, , Laboratory of Aquatic Ecology, Catholic University of Leuven, Leuven, Belgium, 
Schwenk, K, , Dept. of Ecology and Evolution, J.W.G. University of Frankfurt, Frankfurt am Main, Germany, k.schwenk@zoology.uni-frankfurt.de
 
HYALODAPHNIA IN EUROPEAN SHALLOW LAKES: IS BIODIVERSITY RELATED TO LAKE CHARACTERISTICS?
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Microcrustacean species of the subgenus Hyalodaphnia(Anomopoda: Daphnia) are ubiquitous in European lakes and play an important role in freshwater biodiversity. Estimation of diversity indices, however, is hindered by identification and classification problems because of the speciesí phenotypic plasticity in response to environmental changes and its propensity to form interspecific hybrids. In this study, we present data on Hyalodaphnia populations of 40 shallow lakes in Belgium, the Netherlands and Denmark. Lakes were selected, in the framework of the EU-project BIOMAN, based on several criteria: size, connectivity, water quality and nutrient levels. Daphnia individuals, including interspecific hybrids, were identified using nuclear DNA markers. Estimated biodiversity levels of the Hyalodaphnia populations were correlated with lake characteristics.