Vegetation of Salavat town (Bashkortostan Republic). III. Synantrope vegetation (classes Bidentetea tripartitae, Stellarietea mediae and Artemisietea vulgaris)

At the moment, the ruderal vegetation of Salavat town (Bashkortostan Republic) (classes Bidentetea tripartitae, Stellarietea mediae and Artemisietea vulgaris) is presented by 20 associations, 3 subassociations, 2 variants, 4 communities (2 derivate and 1 basal) belonging to 7 alliances and 6 orders. High variety of natural and synantrope vegetation is caused by heterogeneity of landscapes within city territory and different degree of anthropogenic impact. A characteristics of synantrope urban vegetation is a presence and increasing of distribution of the monodominant plant communities formed as a result of invasion of aggressive neophytes (derivate communities Bidens frondosa [Bidentetea tripartitae/Stellarietea mediae], Galinsoga parviflora [Stellarietea mediae] and associations Ambrosietum trifidae, Ivaetum xanthiifoliae). Unlike other types of natural and seminatural vegetation, the ruderal vegetation occupies the biggest areas of Salavat town.