COMPARATIVE STUDY OF ECOLOGICAL RANGES OF INDIGENOUS AND ALIEN POACEAE SPECIES IN THE RUSSIAN FAR EAST

Seledets V.P., Probatova N.S.

Ученые записки Забайкальского государственного университета. Серия: Биологические науки 2017; 12(1): 96-106

On the examples of 14 indigenous and 15 alien Poaceae species of the Russian Far East flora the ecological ranges in natural ecosystems were studied. The trends of changing of combinations of ecological ranges'' features in different stages of ecological adaptation were revealed. The special features of adaptation of alien and indigenous Poaceae species in the environment of the Russian Far East were studied. It was revealed that the most of alien species are in low level of ecological adaptation while indigenous species are highy adapted. Our studies showed that the size of ecological ranges and the distance between optimum and the center of ecological range is the most preferable way for evaluation of the degree of ecological adaptation of the species. The use of these parameters of ecological range gives advantage to obtain data which are necessary for quantitative evaluation of degree of the species ecological adaptation. It permits to elaborate a typology of degrees of species adaptation to the combination of ecological factors.