CLASSIFICATIONAL DIFFERENCES OF SMALL MAMMALS COMMUNITIES OF WESTERN SIBERIA

Classifications of the small mammal communities flat and mountain parts of Western Siberia by results of the accounts, preliminary average on vegetation map portions, to their groups and the parameters transformed into shares of variety coefficients are made and analysed. The small mammal communities are less mosaic, than amphibious and reptiles, but are multiple continuous, than birds. Thus penetration of the small mammal communities of different type does not go like displacement of borders in relation to zonal and subzonal boundaries like birds, but wide tongues. First of all, similar interpenetrations dominate in forest-tundra and northern taiga where some communities concern to forest-tundra type, others to wood. Also it is peculiar for forest-steppe at the expense of wood and meadow-steppe interpenetration. Thus the wood type grasps significant amount of mosaic and open habitats with sufficient humidifying. Besides the forest-tundra, wood and meadow-steppe communities penetrate on mountain lands not only on landscape analogues, but also inclusions of other habitats. Thus, heterogeneity of the small mammal communities is defined by macro-specificity of environment, it means they are distributed less precisely, than birds, but it is more natural in the landscape plan, than poikilothermal animals, localness of their distribution is very great, their abundance is less homogeneous, than birds and small mammals.

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