Abstract

The results of 5-year studies on macrozoobenthos in the Vyatka River in the area of the Chemical-Weapons Destruction Facility (CWDF) (settlement of Mirny, Kirov oblast) at the stage of neutralization of organophosphorous agents are presented. The taxonomic composition, dynamics of quantitative parameters, and structure of communities of bottom invertebrates are considered. A bioindicational assessment of water quality is made. The conservation of the total taxonomic richness and increase in the total biomass of zoobenthos are established. Processes of organic pollution and eutrophication in the Vyatka River are determined.

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