Spatial organization of the bird assemblages of the Eastern Altai in the first part of summer

Abstract

The results of bird counts averaged over the first half of summer (May 16–July 15) in 1996, 2000–2002, 2007, 2008 and 2013 in the Eastern Altai are analyzed. The hierarchical classification of bird population has been compiled on the basis of cluster analysis. Its structure and the main environmental factors that determine the territorial heterogeneity of ornithocomplexes have been identified. It is shown that their variability in the East Altai and the Altai physiographic mountain region is generally similar in structure. The spatial-typological structure of the Eastern Altai bird population is close to a crescent in its configuration.