Hydrochemical and hydrological samples were taken at different sites, and research fishing was carried out using multi-cell fishing nets.
Mass measurements of roach were carried out to determine the size and age structure of its population, a complete biological analysis of 8 species of fish and one species of invertebrates (narrow-toed crayfish Pontastacus leptodactylus).
Despite the early snowfall and melting of the ice in the first decade of April, unsatisfactory meteorological conditions in April (low and negative air temperatures at night, prolonged rains with snow charges, with strong winds from the north and west directions) did not allow the water in the reservoir to warm up.
According to the general characteristics, spring and spawning are protracted and late, the density and abundance of the main fish species in the coastal spawning areas of the reservoir are low, and only pike spawn is noted. The total water level in the reservoir is lower than usual, and some shallow bays and coastal areas with vegetation are dehydrated.
VNIRO Press Service