On the issue of the species composition dynamics of Percidae family fishes in the mouth region of the Dnieper in different research periods

Abstract

The article identifies the dynamics of species of the Percidae family in the lower reaches of the Dnieper in different periods. A decrease in the species composition of ichthyofauna of this family has been established. The main reasons for the reduction in the diversity of fish of the Percidae family have been identified, the most important of which are siltation of floodplains in the region, disappearance of spawning grounds and weakening of water flow velocities in the channel and ancillary network of the Dnieper.