Characteristics of planktonic and benthic invertebrates of the Kama reach of the Kuibyshev reservoir
https://doi.org/10.46845/1997-3071-2024-74-11-24
Abstract
The work provides up-to-date data on the taxonomic composition and quantitative indicators of zooplankton and zoobenthos communities of the Kama Reach of the Kuibyshev reservoir (within the Republic of Tatarstan) for the period from 2017 to 2022. According to the results of the conducted studies, zooplankton and zoobenthos in the considered water area were represented by 127 and 124 taxonomic units, of which 22 and 26 species were alien, respectively. Among planktonic invertebrates, rotifers prevailed both in species diversity and in numbers, and branched crustaceans in bio-mass. Diptera made a significant contribution to the formation of the species richness of zoobenthos, crustaceans dominated in number, and mollusks dominated in biomass. The structure-forming species in this water area were Rotifera Asplanchna priodonta (Gosse, 1850) and Brachionus angularis (Gosse, 1851), Cladocera Bosmina (Bosmina) longirostris (O.F. Müller, 1785) and Daphnia galeata (Sars, 1863), Amphipoda Cheli-corophium sowinsky Martynov, 1924 and the mollusk Dreissena bugensis (Andrusov, 1897). The role of alien species in quantitative indicators of zooplankton was insignificant, whereas in benthos they prevailed over native ones. An analysis of the structural indicators of planktonic and bottom communities revealed that their species diversity was characterized by relatively low values, both in abundance and biomass. At the same time, the components of communities as a whole developed equally, as evidenced by the obtained values of the equalization index. The ecological state of the considered groups of aquatic organisms was assessed as transitional from prosperous to stressful.
About the Authors
M. A. Gvozdareva
Tatar branch of the Russian Federal Research Institute of Fisheries and oceanography
Russian Federation
Russian Federation
Margarita A. Gvozdareva – laboratory assistant
Kazan
A. V. Melnikova
Tatar branch of the Russian Federal Research Institute of Fisheries and oceanography
Russian Federation
Russian Federation
Anna V. Mel’nikova – PhD in Biology, Head of the Laboratory of Ichthyology
Kazan
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Review
For citations:
Gvozdareva M.A., Melnikova A.V. Characteristics of planktonic and benthic invertebrates of the Kama reach of the Kuibyshev reservoir. KSTU News. 2024;(74):11-24. (In Russ.) https://doi.org/10.46845/1997-3071-2024-74-11-24
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