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From 2011 to 2013, in the water area of Kuibyshev Reservoir in the Kazan region (Russia), the artificial plots of land were created in the process of land reclamation. As a result, 600 hectares of flooded islands, breeding grounds, and channels were filled with sand. The system of artificial land plots was formed, connected with the existing islands. And the part of the Volga River, enclosed by them, turned into a relatively landlocked body of water. In the process of land reclamation, the destruction of the water body, fauna and flora of water area and islands was revealed. The research, conducted in July-August 2018, revealed the “blooming” of water, intensifying at the end of summer, and leading to an increase in water pH (up to 9 units), and supersaturation of the surface layers of water with oxygen. Significant changes in the abundance and biomass of zooplankton, the dominance of indicator species of eutrophic waters, and disturbance of the community structure have been revealed. The zoobenthos community is characterized by a simplified structure, low values of quantitative indicators, and the dominance of a group, which is resistant to water pollution. According to the index of Woodiviss, the reservoir is "very dirty" "dirty." The draft project of eco-rehabilitation and improvement of the area was developed. The project provides for the scouring of channels, restoration of wood and shrubby vegetation, grass cover on reclaimed territories, strengthening of shore, creation of a road-path network, lighting, and recreation areas.

Eco-Rehabilitation and Improvement of Water Plant and Animal Species