Home – Home – Jornals – Contemporary Problems of Ecology 2019 number 2

Data on species diversity of Micrasterias C. Agardh ex Ralfs representatives from the water bodies of West Siberia, their occurrence in zones and subzones are generalized. To date 23 specific and intraspecific taxa from the order Desmidiales are known. The representatives of the family occur in mosaic order in all the area of West Siberia. The greatest number of taxa (15) was revealed in middle taiga, significantly less was determined in southern and northern taiga, 9 and 8 taxa, respectively, and 3-5 in other zones. No species were discovered in the steppe zone. Thirteen species (18 taxa) of the genus were found in the lakes of different types, 5 species (7 taxa) in water streams, 4 (5 taxa) in swamps, and 4 species in temporal water bodies. The analysis performed on adaptation of the species to habitat conditions has shown that the representatives of this genus may serve as indicators of acid and brackish water. With relation to mineralization prevail halophobes - 11 taxa, among indicators of pH prevail acidophilous plants - 15 taxa.