Zooplankton of the Volga reach in the Kuybyshevsky water reservoir under the conditions of anthropogenic transformations of aqualandshafts

The water space of the Kuibyshev reservoir near Kazan (vicinity of Zaimishche settlement) has changed due to hydraulic engineering works. The aim of our study was to reveal how these processes influenced the ecosystem, namely zooplankton, as an indicator of its condition. We studied species composition and quantitative characteristics of zooplankton communities. Cluster analysis showed that in the shallow-water zone of the reservoir, the distribution of zooplankton structure is spatially heterogeneous. According to the obtained results, it seems appropriate to consider the possible ways of changing hydrological regimen in the Kuibyshev reservoir.