Comparative characteristic of plankton microbial community in the waterway and coastal areas of the Kama reservoirs cascade

The comparative analysis of indicators of development of various components of plankton community in reservoirs of the Kama cascade in various hydrological seasons, and on various sites (in coastal and waterway) was carried out. The difference in the quantitative development of unicellular pro- and eukaryotes in different areas (coastal and riverbed) was more pronounced than in different hydrological seasons (spring flood and summer low water). Cyanobacteria make the greatest contribution to the formation of the total biomass of phytoplankton in the waterway. The contribution of heterotrophic component (bacteria and ciliata) is more significant in the coastal area. It was shown the significant correlation of the biomass of unicellular plankton and picodetritus particles, which was present in considerable amounts in the waters of the Kama reservoirs cascade.