Taxonomic and spatial structure zoobenthos of the transboundary (Belarus-Latvia) lake Sita
https://doi.org/10.29235/1029-8940-2021-66-1-53-63
Abstract
The zoobenthos of the cross-board (Belarus-Latvia) lake Sita was studied. The registered 47 taxa of benthic fauna from the species and taxa above the species. The bottom fauna includes a protected relict species Pallaseopsis qudrispinosa, listed in the Red book of Belarus. Chironomid larvae formed the basis of the abundance and biomass excluded molluscs. The lake belongs to mesotrophic type according to the average abundance and biomass zoobenthos.
Spatial heterogeneity has been established in the depth distribution of the entire community, individual groups, and species. Taxonomic diversity decreased with increased depth, fall of temperature and oxygen concentration. Abundance grows from the littoral to a depth of 10 meters and then gradually decreases to the maximum depth. The biomass was determined largely by the presence of molluscs, maximum values are marked at depth 5,4 meters. The population of the species is confined to certain depths. For closely related species, there is a partial or complete division of ecological niche.
Supporting agencies: The authors are grateful to the head of the Hydrobiology laboratory, Corresponding Member of the National Academy of Sciences of Belarus V. P. Semenchenko for valuable advice and comments when writing the article. This work is partially supported by Belarusian Republican Foundation for Fundamental Research, grant no. B18MS-16.and B20MS-17
About the Authors
I. I. Lapuka
Scientific and Practical Center for Bioresources, National Academy of Sciences of Belarus
Belarus
Belarus
Ilya I. Lapuka - Junior Researcher.
27, Akademicheskaya Str., 220072, Minsk
V. V. Vezhnavets
Scientific and Practical Center for Bioresources, National Academy of Sciences of Belarus
Belarus
Belarus
Vasil V. Vezhnavets - Ph. D. (Biol.), Associate Professor, Leading Researcher.
27, Akademicheskaya Str., 220072, Minsk
A. A. Skute
Daugavpils University
Latvia
Latvia
Arturs A. Skute – Professor.
13, Vienibas Str., Daugavpils
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