To the study of phytobenthos of the Kuibyshev reservoir

For the first time, data on the taxonomic composition, distribution and quantity of algae in the bottom sediments of the Kuibyshev reservoir are presented. It was found that the number, as well as the spatial and vertical distribution of phytobenthos algae differ depending on the type of bottom sediments, depth, and phase of seasonal succession. A feature of autumn sampling is the quantitative predominance of Cyanoprokaryota species in the silt, causing water bloom in the Volga reservoirs ( Microcystis aeruginosa , M. wesenbergii ) with their endosymbionts, as well as the presence of dormant spores Aphanizomenon flos-aquae and spores of species of the genus Anabaena . The vertical distribution of algae in bottom sediments was studied: living cells and their colonies were recorded in the bottom water, in silty sediments, as well as in silt to a depth of 10-18 cm. The maximum amount of algae was found in silty sediments. (0,5-1 cm to silt) and in silt (to a depth of 4-6 cm).