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Research Article Open Access
There are considered new approaches to the analysis of an ecological variety of plants with use of ecological scales. There are offered the quantitative methods of determination of ecological valency and tolerance of species of plants. There are estimated ecological positions of forest and meadow plants in different parts of areas in the Mari El Republic, the Mos- cow, Tver regions of Russia. The carried-out analysis of conditions of cenopopulations’ habitats (central processing unit) of plants of various vital forms showed that all of them borrow in different parts of areas of the territory with rather narrow ranges of the considered abiotic factors. It testifies to their fitness to cumulative influence of a certain set of climatic and soil factors of different regions. Determination of potential ecological valency and the characteristic of species on scales of factors gives the chance to solve a problem of a quantitative assessment of ecological tolerance of t species of various vital forms and strategy in relation to separate factors. The indicators of the potential and realized ecological valency and an index of tolerance offered by us can widely be applied to the characteristic of ecosystems in which cenopopulation of plants, for an assessment of ecological positions of types are presented. Use of this approach is also actually in compar- ative floristics and in the ecological analysis of the protected plants.
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Author(s): Yuliya A Dorogova, Lyudmila A Zhukova, Nina V Turmuhametova, Tatiana A Polyanskaya, Alexander A Notov and Svetlana M Dementyeva