Taxonomic diversity of phytoplankton of the Kalmius River and its reservoirs

Abstract

The paper presents data on the taxonomic diversity of phytoplankton in the middle section of the Kalmius River and the reservoirs located on it. Floristic analysis showed the presence in the aquatic biocenosis of 291 species of algae and 162 intraspecific taxa belonging to 8 divisions, 18 classes, 42 orders, 66 families and 105 genera. The divisions Cyanophyta, Chlorophyta, and Bacillariophyta dominated in frequency of occurrence. The Shannon-Weaver index varied the most in the Starobeshevsk Reservoir. The Sorensen-Chekanovsky coefficient evidences the isolation of the phytoplankton algal flora of the Starobeshevsk Reservoir. In the Nizhnekalmius Reservoir, a regular annual repetition of the dominant types of algoflora development has been established.

Keywords

• algal flora
• water biocenosis
• reservoirs
• donbass