The research is devoted to studying of cyanobacterial complexes in Krasnoyarsk and their influence on an ecosystem. For the first time in Siberia a specific variety of soil algae while using different options of fertilizers in greenhouse facility is studied. The taxonomical structure of the studied algal flora includes 4species, however the obtained data quite are agreed with available in literature. In total within the region 238species and intraspecific algae of taxons are revealed. In a floristic range of all soil algae studied algosinuziyas a ratio on departments is as follows: Cyanophyta - 40.4%, Chlorophyta - 39.7%, Xanthophyta - 14.1%, Bacillariophyta of-5.8%. The greatest role in forming of algocenosis belongs to representatives of cyanoprokaryotes and green algae, and on undisturbed areas presence of flavovirent algae species is noted.

The article analyzes the prerequisites of self-determination and sovereignty of Tuva in 1921. Briefly, the general context of events is revealed, the main episodes and key personalities are listed. Using historical-genetic, comparative-historical and problem-chronological methods, the positions of Mongolia and Soviet Russia and their relationship on the status of Tuva, the organization and convocation of the All-Tuva Constituent Khural, which proclaimed the independence of Tuva, as well as the consequences of the declaration of independence of Tuva, were reconstructed. The role of the authorized representative of the Sibrevkom in Uryanhai I.G. Safyanov in this process is shown. In conclusion, the authors conclude that the emergence of a sovereign Tuva state was made possible both due to the contradictory political situation in Asia and due to the role of I.G. Safyanov in history. Since 1921, Tuva began to live and develop in the political and economic conditions created by the Constituent Khural.