Seasonal and interannual dynamics of zooplankton community characteristics of an overgrowing water body (on the example of Ilantovo lake of the Volzhko-Kamsky Reserve)
DOI:
https://doi.org/10.24852/2411-7374.2023.4.50.59Keywords:
zooplankton, structure, species diversity, higher aquatic vegetation, trophicity, Volzhko-Kamsky ReserveAbstract
This article presents the results of seasonal hydrochemical and hydrobiological studies of Ilantovo lake, located on the territory of the the Volzhko-Kamsky State Natural Biosphere Reserve. The researchers examined the distribution of invertebrate organisms in different areas of the lake, specifically the littoral and pelagic zone. They also explored the influence of higher aquatic vegetation on zooplankton communities and the seasonal variability in their structure. The lake’s zooplankton consisted of 110 species, primarily rotifers. There were identified 41 species of phytophilic zooplankton in macrophyte thickets. These thickets had different low species similarity among zooplankton communities. The littoral part of the lake showed high species diversity, but low abundance and biomass of zooplankton communities compared to the pelagial part. Significant fluctuations in zooplankton abundance and biomass are caused by mass development of some species, especially under favorable hydrothermal conditions. The index of zooplankton species diversity decreased with an increase in the lake’s trophic status.
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Copyright (c) 2023 M.V. Kosova, O.Yu. Derevenskaya, E.N. Unkovskaya, N.V. Shurmina, F.M. Mukhametzyanova
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