Abstract
Based on the field studies conducted in August 2005 and 2007, the distributions of zooplankton structure and abundance, as well as chlorophyll content, in the Sheksna Reservoir are analyzed. A total of 107 zooplankton species have been found (46 Cladocera, 18 Copepoda, and 43 Rotifera), including 24 species (10 Cladocera, 2 Copepoda, and 12 Rotifera) new for the reservoir. In the surface layer of water, where blue-green algae concentrate, zooplankton abundance and biomass are 1.5–5 times lower and the zooplankton structure is simpler than in deeper layers. The highest zooplankton biomass (>3 g/m3) are observed in Lake Beloe and the upper area of the Sheksna section, while in the near-shore sites it did not exceed 1 g/m3. There are no significant changes in zooplankton abundance when compared to the abundance recorded at the end of the past century.
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Original Russian Text © V.I. Lazareva, V.N. Stolbunova, N.M. Mineeva, S.M. Zhdanova, 2013, published in Biologiya Vnutrennikh Vod, 2013, No. 3, pp. 46–55.
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Lazareva, V.I., Stolbunova, V.N., Mineeva, N.M. et al. Features of the structure and spatial distribution of plankton in the Sheksna Reservoir. Inland Water Biol 6, 211–219 (2013). https://doi.org/10.1134/S1995082913030097
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DOI: https://doi.org/10.1134/S1995082913030097