Characteristics of algae in lake Azas (Republic оf Tyva, Russia)
Yu. V. Naumenko1, Ch. D. Nazyn2
1Central Siberian Botanical Garden of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
2Tuvan State University, Kyzyl, Russia
Keywords: Algae, taxonomic composition, Cyanoprokaryota, Bacillariophyta, Lake Azas, Republic of Tyva
Abstract
For the first time, information is provided about the algae of Lake Azas, part of the water area of which belongs to the Azas State Nature Reserve. 171 species and intraspecific taxa have been identified, which belong to 72 genera, 50 families and 8 divisions. It has been established that the basis of the algal flora consists of diatoms and blue-green algae. 14 dominants were identified, 9 of which belong to the Bacillariophyta department. An ecological and geographical analysis of algae in the reserved part of the lake was carried out. It was established that the algal flora of the water body is represented by benthic species with a predominance of indifferent forms in relation to the algae and active reaction of the environment. In all studied biotopes, 123 species were identified - indicators of water saprobity. The predominance of betamezosaprobionts and oligosaprobionts was noted. Geographically, cosmopolitan and boreal species dominated.
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