Some features in functioning of benthos community in the top reaches of the Kuibyshev water reservoir

Simplification of benthos communities, mass development of invasive species, reduction of a role of predators, has been revealed during expedition research of sediments of the top reaches of the Kuibyshev water basin. The reduction of macrozoobenthos contribution in an energy exchange the increasing role is got by microbic fauna of sediments that leads to change of oxygen balance in bottom water. These tendencies indicate on processes of destabilization of the Kuibyshev water basin ecosystem in the present time.

benthos communities, ecosystem of Kuibyshev water basin, energy exchange, processes of destabilization