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Borisov A. N., Ivanov V. V., Ekimov E. V. The Method for Evaluation of the Resource Space Distribution in Ecological Niche

ecological niche, the area of an individual dominance, resource allocation, modeling of the resource space distribution


How to cite: Borisov A. N., Ivanov V. V., Ekimov E. V. The method for evaluation of the resource space distribution in ecological niche // Sibirskij Lesnoj Zurnal (Siberian Journal of Forest Science). 2014. N. 5: 113–121 (in Russian with English abstract)

© Borisov A. N., Ivanov V. V., Ekimov E. V., 2014

The method for evaluation of the resource space distribution in an ecological niche between individuals and communities is discussed in the paper. The method is based on allocation of areas in which each individual or community has the dominating area (DE) in spatial sharing of a resource. Realization of the method is shown on examples of the analysis of existential dynamics of field vole (Microtus gregalis) colonies and the analysis of horizontal structure of a pine tree stand. It is shown that the offered method gives an adequate estimation of a resource sharing between individuals and communities. It is shown that Shter, Weihe, etc. methods, based on determination of the areas of growth, give a systematic overestimate for individuals of the small sizes, and underestimate for a bigger individuals. The offered method doesn't show such divergences. For a studied pine tree stand close dependence of DBH on the area of their DE (R2 = 0.79) is revealed. Modeling based on spatial sharing of a resource can be used for the description of a separate individuals’ growth dynamics in a tree stand, and investigation of a tree stand growth. Data on splitting the territory on DE of field vole colonies allows analysis of existential process of settling by population of territories and to receive quantitative indices on development of dumps on different phases of number dynamics. The developed method allows study of spatial sharing of the territory and estimate of the real capacity of habitats. The placement analysis taking into account a season of reproduction and at different phases of number also gives chance for a quantitative assessment of specific radius of shelters of the field vole.

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