GIS assessment of biotopes of the river part of the Sheksninsky reservoir and their use by zoobenthos

With the help of GIS technologies, the boundaries and areas of the deep-water zone, thickets of higher aquatic vegetation, and open water zones with different types of soils have been established in the river part of the Sheksninsky reservoir. Quantitative indicators and the composition of the dominant species of zoobenthos in each type of biotope are given. In the bays, the biomass of zoobenthos is lower than in similar biotopes in flowing areas along the ship’s passage. The weighted average biomass of zoobenthos is 3.9 g/m. According to the level of development of zoobenthos, the reservoir belongs to the medium-sized.