Algaecenoses structure of the Permskiy krai rivers under anthropogenic salinization of potassium production wastes

In the article, structural indicators of algaecenoses of Yaiva, Volim, Chernaya and Lenva rivers of Permskiy krai was presented. The data of quantitative characteristics (numerosity and biomass) of potamophytoplankton and their spatial dynamic of studied rivers was provided. It was revealed that the parameters of the structure of algaecenoses (biomass and density index) are lower in the high mineralization rivers. Mass species was revealed: Diatoma elongatum, D. vulgare, Fragilaria capucina, F. crotonensis, Navicula viridula, Nitzschia tryblionella, Ulnaria ulna (all of them -Bacillariophyta) and Klebsormidium subtile (Streptophyta). By the revealed dominant complexes and values of the density index of included species the algaecenoses are grouped into five clusters, which coincides with the mineralization values, changing in some rivers under the influence of potash waste. The lag-effect in reaction to an increase of mineralization level was discovered in the algae-cyanobacterial communities of the Volim river.