Ecological Ranges and Types of Rarity in the Kuznetsk Alatau of Some Saussurea DC. Species
M. N. SHURUPOVA, A. A. ZVEREV, I. I. GUREYEVA
Nationаl Research Tomsk State University, 634050, Tomsk, Leninа avе., 36
Keywords: экологическая ниша, фитоиндикационный анализ, Saussurea, Кузнецкий Алатау, редкость, ecological niche, indicator value, Saussurea, the Kuznetsk Alatau
Abstract
Indicator values for Saussurea baicalensis (Adams) B. L. Rob., S. frolowii Ledeb., S. salicifolia (L.) DC., and S. schanginianа (Wydl.) Fisch. ex Serg. on the gradients of soil moisture and nutrient availability-salinity were analyzed for more than 1600 relevés. We determined the size of their ecological niches and their importance value in phytocenoses. We assessed the vulnerability of local populations of S. baicalensis, S. frolowii, S. salicifolia and S. schanginianа in the Kuznetsk Alatau by comparison of their position within the ecological niches and determined types of rarity for each of listed species in the Kuznetsk Alatau.
|
