Meadow communities and soils of karstic valleys in the basin of White Kedva river (Middle Timan, Komi Republic)

Existence of forest-free karstic valleys at Middle Timan is connected with superficial bedding of carbon-ate deposits, fragmentation of relief and an original microclimate. Such ecosystems, occupying very small areas, are object of special attention and protection. Soils of karstic valleys differ from zone soils on con-ditions of soil formation and physical and chemical properties. Primary meadows of karstic waterless val-leys deserve their entering into lists of protected communities of Komi Republic as existence is connected with them in the European northeast of the relict and isolated regional populations of some rare and pro-tected kinds of vascular plants.