During the work, it turned out that the water level had reached its maximum отметки: as a result, the shoreline began to become swampy, the coastal zone is actively overgrown with moisture‑loving vegetation, and waterlogged areas are forming.
Another sign of the changes was the blooming of the water — this indicates the activation of phytoplankton and may suggest an increase in the content of biogenic elements, which is typical for shallow lakes with a high water level and strong warming.
To assess the hydrological and hydrochemical regime, the scientists took water samples at three monitoring stations in different parts of the reservoir. In the laboratory, key parameters will be studied, including the level of dissolved oxygen, mineralization, and indicators of organic pollution, which will help to track differences in water quality across the water area.
Ichthyological studies were conducted using the method of scientific research fishing with the use of multi‑section drift nets — this approach makes it possible to cover different size and age groups of fish and to reliably assess the population structure. The specialists recorded the linear characteristics of 602 crucian carp specimens and also carried out a complete biological analysis of 211 fish of three species: they determined the weight, sex, degree of gonad maturity, fat content, and other significant indicators.
The collected data will help assess the stocks of the main fish species in the lake, calculate the permissible catch volumes, and develop scientifically based recommendations for the rational use of biological resources. In addition, the results will make it possible to adjust measures to preserve the lake’s ecosystem and plan future monitoring work in the region.
Press service of VNIRO
