Keywords
water bodies
south tundra
Indigirka River
Yakutia
How to Cite
Abstract
Taxonomic composition of zoobenthos, density, biomass, species diversity, and composition of the dominant complex of southern tundra water bodies in the lower reaches of the Indigirka River are discussed in the article. In this research, we considered 51 reservoirs: 8 lakes, 2 grass-Hypnum bogs, and 41 small tundra reservoirs. The composition of zoobenthos includes 17 invertebrate taxa of 3 types and 7 classes. The types of Mollusca and Arthropoda represent the majority regards zoobenthos diversity. Communities of Amphipoda, Mollusca, Arachnida, Trichoptera, Plecoptera, Diptera arevdominated by density and biomass. The community of Lake Dukarskoe had the highest value of Shannon index. Macrozoobenthos of the studied reservoirs has high faunistic similarity due to the periodic exchange of species. This mechanism contributes to the mutual enrichment of benthic waters in reservoirs and the maintenance of their diversity in the subarctic tundra.
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