Современный состав ихтиофауны водохранилищ Москворецкой водной системы и водораздельного бьефа канала имени Москвы

Abstract

Based on the results of long-term research on reservoirs of the Moskvoretsky water system and the watershed of the Moscow canal, information is provided on the features of their hydrological, hydrochemical and hydrobiological regimes, as well as on the current composition of the ichthyofauna. The article presents the long-term dynamics of catches of fishing nets and small fry. Changes in the structure of net catches are shown depending on the mesh step of the applied nets and the depth of setting the net orders. It is established that during the period of operation of reservoirs of the Moskvoretsky water system and the watershed of the Moscow canal, the fish part of the community of this group of reservoirs is quite stable and is represented mainly by eurybiont species of the limnophilic ecological group. The similarity of the species composition of the ichthyofauna of reservoirs in the Moscow canal watershed is explained by the exchange of species and seasonal fish migrations between these reservoirs through the channel. A greater number of fish species in the reservoirs of the channel. Compared to the moskvoretskiye reservoirs, this is due to their connection through the migration corridor - channel with the Volga, a more favorable oxygen regime, and the hydrological isolation of the moskvoretskiye reservoirs. The results of long-term measures for acclimatization of fish in this group of reservoirs are described. The issue of the state of Amateur fishing in reservoirs near Moscow is considered.