ECOLOGY AND SPECIES BIODIVERSITY OF BLUE AND GREEN ALGAE OF THE SALGIR RIVER
In this article presents the results of studies species composition of mass species of blue and green algae of the Salgir's ecosystem. It was faunded about 27 kind of Cyanophyta, belonging to different ecological and geographical groups, the large part of them are planktonic cosmopolitans, half of which are eugalophytes. The analysis of the component composition of Cyanophyta mass species in terms of abundance and biomass revealed high biodiversity due to favorable conditions for cyanobacteria habitat in the ecosystem of the Salgir. One of the reasons for the increase in number and biomass of blue and green algae in the Salgir is an anthropogenic factor, in particular, the ingress of wastewater containing organic substances, salts of household compounds, residues offertilizers and pesticides that accumulate in the Ayan and Salgir rivers. In this regard, the increase in Cyanophyta in the total mass of phytoplankton makes it possible to assess the general state of the river's aquatic environment.