Taxonomic structure of the epiphyton of small rivers of the northwestern coast of lake Ladoga

The taxonomic structure and diversity of attached algae in small rivers of the northwestern coast of Lake Ladoga are presented. A total 323 algal species from 7 divisions were found: Bacillariophyta - 122 (38%), Charophyta - 69 (22%), Chlorophyta - 54 (17%), Cyanoprokaryota - 45 (12%), Euglenophyta - 25 (8 %), Xanthophyta - 5 (2%), Rhodophyta 3 - (1%). Divisions Bacillariophyta, Charophyta,Chlorophyta, Cyanoprokaryota are most various and numerous. The most representative families are Desmidiaceae, Closteriaceae, Fragilariaceae and the genera Closterium, Cosmarium, Nitzschia. The structure and diversity of the algoflora are determined by the geographic location and characteristics of the catchment area.