Аннотации:
Water occupies a special position among the natural resources of the Earth, meeting the needs of ecological systems, the biosphere and a single biogeochemical cycle as a factor of continuity of life on the earth's surface, as well as the development of the economy and prosperity of mankind, food security and the preservation of humanity as a species on Earth. The ecological problems of the unique Volga basin with its catchment area, which makes up a third of the European territory of Russia, undoubtedly of national importance. The article is devoted to the problems that arose after the creation of reservoirs on the Volga; the main processes that threaten the environmental safety of water and aquatic biological resources of the Volga reservoirs are considered. A special role is played by the expansion of the network of environmental monitoring and research of the "habital - hydrobionts" system as a complex chain of interdependent links that determine the quality of water and aquatic biological resources.
