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September 2016, № 9 (197)

Strel THE ROLE OF THE MACRO-CLIMATIC FACTORS IN THE FORMATION OF PLANTS' ADAPTIVE POTENTIALMethods of empirical ecological niches modeling are used extensively in order to predict plant's adaptive potential in unusual conditions. This approach has become almost universal. Nevertheless, it has disadvantages: the species' valence forecast based only on the macro-parameters, the action of biotic and micro-climatic factors and the adaptive capacity of species are not usually considered. Therefore, further study of the unaccounted factor's role is required. The aim of the work is to investigate the separate contribution of macroclimatic and usually unaccounted factors of natural habitats into predetermination of plant's adaptive capacity in unusual conditions (in greenhouses). The objects of the study were 18 species of Ficus L. genus from the collection of the Donetsk Botanical Garden. Assessing the contribution of different factors into determining of adaptive capacities was carried out basing on machine learning methods. Predictors in models were macroclimate indicators of species natural habitats. The dependent variable was the plant's acclimatization success index in greenhouses conditions. According to the results, the adaptive capacity of plants in the greenhouse complex depends on the macro-environment of their natural habitats. The temperature and the precipitation in the range of natural habitats showed the strongest connection with the adaptability of species. The macroclimatic factors account for at least 57 % of the explained variation in the species' acclimatization success. The remaining 43 % of the variation is due to the influence of unaccounted factors. A significant role of usually bypassed factors must be considered during the extrapolation of the niche model's results.Key words: ecological niches model, climatic factors, adaptive potential.

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About this article

Authors: Gluhov A.Z., Strelnikov I.I.

Year: 2016

Editor-in-chief

Sergey Aleksandrovich
MIROSHNIKOV

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