Современное состояние природных популяций редкого вида Cephalaria uralensis (Murr.) Schrad. ex Roem. et Schult. на Южном Урале (Республика Башкортостан)

Abstract

The results of study of state of 16 cenopopulations of a rare species of the South Urals Cephalaria uralensis (Murr.) Schrad. ex Roem. et Schult. in Bashkortostan Republic are presented. The common density in the cenopopulations varies from 2,2 to 10,3 copies/m2, with a dominance of generative fraction. On classification "delta-omega" the majority of cenopopulations are mature, one cenopopulation – young, one – ripening, two – transitional, two cenopopulations – growing old. In the majority of morphometric parameters, both vegetative, and generative spheres Shishm's cenopopulation is in the lead. Minimum values are in all respects noted in Tashtyube's cenopopulation. The carried-out vitalitet analysis revealed that nine cenopopulations fall into prospering, the others – depressive. Results of a research can be used for perfecting of protection of populations of Cephalaria uralensis in the territory of the Bashkortostan Republic. Now only one cenopopulation of species is in the protected territory Mount Satyrtau in Alsheevsky district. For protection of a species it is necessary to recommend at least one more locality – small shikhana in the neighborhood of of Shishm where high values of parameters of a species and vitality are noted.