Korzhenevs'ka Y. Accumulation-denudational processes as the factor of coenosis formation (a Crimian plant communities example)

Research subjects: the vegetative communities of classes: Querco-Fagetea, Erico-Pinetea, Thero-Brachypodietea, Onosmo polyphyllae - Ptilostemenetea, Thlaspietea rotundifolii, Festuco-Puccinellietea. Research objectives:quantitatively to estimate the contribution of accumulation-denudation of the factors of environment in organization of communities various, ecologically contrast types of vegetation representing different models of organization and, on this basis, to characterize the originality of vegetation of the Southern Crimea, as territories with the expressed processes of relief formation. Methods: correlation and one factor gradient analysis, and the following approaches were used: syntaxonomical analysis and analysis of structure of the vital forms and phytosociological spectra of coenoflora. Theoretical and practical results: the ecology of main coenoforming species by methods of gradient analysis is analysed and the laws of change of floral structure along gradients of conducting ecotope factors are revealed. The received results are of great interest for scientific - reasonable development of measures on optimization of nature-landscape units, substantiations of scales and character of nature using with the purpose of creation steady and long functioning nature-territorial complex of the Crimea. Novelty of introduced: it is established, that the investigated vegetation corresponds to three basic models of organization of vegetative communities (C-S model, accumulation-denudation variants G-B of model and abiotical of S-model), last two variants of models are new. The recommendations for optimization of rational nature use are formulated in view of the different contribution of accumulation-denudation factors of environment in formation of vegetation cover. Implementation degree: the scientific and methodical development submitted in dissertation work, are introduced into teaching course " Landscape ecology ", "Bioindication" and "Biometry" on faculty of Ecology of Yalta Institute of Man agement ISTU. Effectiveness:it will promote the preservation of species and ecosystem and essentially promote the development of scientific - reasonable system of rational nature using and optimization of ecosystem of the Crimea. Sphere, sector of implementation: botany, ecology, geography, protection of nature.