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№1 (56)-2020
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Abstract The article presents an analysis of materials on biomass and abundance of zoobenthos of the Kigash River for 2018-2019. The taxonomic composition and distribution of fodder zoobenthos for 2019 is shown. The bottom communities of the studied reservoir are influenced by abiotic and biotic factors, due to this, there is a fluctuation in the qualitative and quantitative state of zoobenthos. The study of zoobenthos p. Kigash was carried out on biotopes: Kamyshinka, Sand and Nizhny Bogatinsky in the spring, summer and autumn. For the study of benthic fauna in the two studied years, 18 hydrobiological samples were taken from the reservoir. In 2019, 13 taxa from four groups were identified in the species composition of zoobenthos: worms, crustaceans, mollusks, and insects. Numerous in the river were oligochaetes worms, which formed the basis of the fish food base. The trophicity of the reservoir in 2019 corresponded to a low food grade. Key words: Kigash river, zoobenthos,taxonomic composition, benthofauna, abundance, biomass, trophicity. |