Activity of Rosaceae Juss. family species in some high-altitudinal plant communities of the Western Sayan and Kuznetsky Alatau (Khakassia)

Abstract

In the studied high-altitudinal phytocenoses of the Western Sayan and Kuznetsky Alatau, 22 species and 7 genera of Rosaceae Juss. family are identified, they were found in communities of 3 associations: Flavocetrario cucullatae-Dryadetum oxyodontae (lichen-dryad tundra), Cladonio stellaris-Betuletum rotundifoliae (bushy-lichen tundra) and Aquilegio glandulosae-Anthoxanthetum odorati (alpine low grass meadow). The activity of species of Rosaceae family is the highest in Flavocetrario cucullatae-Dryadetum oxyodontae association due to Dryas oxyodonta (55.90, 3 species), then in descending order Cladonio stellaris-Betuletum rotundifoliae (48.12, 19 species) and Aquilegio glandulosae-Anthoxanthetum odorati (40.80, 11 species) go.