Seasonal and Territorial Variability of Bird Communities in the Kyrgyz Ridge (Tien-Shan) and Northeastern Altai
The classification and structure of annual changes in ornitological complexes were revealed in the high-mountains, mid-altitude mountains and foothills on the northern macroslope of the Kyrgyz Ridge and at the same altitudinal levels and in low-mountains of the northeastern Altai. Using the linear approximation, the information value of the results obtained, including the influence of seasonal changes in nature, was estimated. The hierarchy of the main environmental factors that determine the heterogeneity of ornitocomplexes in the studied regions significantly differed, especially in moisture and heat supply.