Long-term zooplankton dynamics in the Rybinsk Reservoir (1956–2005) |
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| Authors: | V I Lazareva |
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| Institution: | 1.Institute of Inland Water Biology, Borok, Nekouzskii district,Yaroslavl province,Russia |
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| Abstract: | Materials of half-century observations of zooplankton in the Rybinsk Reservoir were used to establish reversible variations
in its structure, abundance, and biomass and irreversible variations in the characteristics (trends). Variations with periods
of ∼10 and 20 years have the largest effect on the community dynamics. Regression models are presented describing the dependence
of zooplankton biomass averaged over May–October on its values in summer months and on the concentrations of chlorophyll a
and phytoplankton and hydrothermal characteristics of the water body. Changes in zooplankton community under the effect of
eutrophication and de-eutrophication of reservoir ecosystem are discussed. |
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