Spatial and temporal variability of the bird population of Ufa
V. V. ZAGORSKAYA1, Yu. S. RAVKIN2, I. P. KOKORINA2, M. I. LYALINA2
1Bashkir Republican Ornithological Society, Ufa, Russia
2Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Ufa, Bashkortostan, Russia, ornithocomplexes, biotopic heterogeneity, seasonal and annual differences
Abstract
The results of year-round bird counts conducted in Ufa every two weeks for three years (2012-2014), on routes with a length of 5 km in each of the five sites (multi-storey buildings, in areas of old and new individual buildings, on streets and in parks) are analyzed. The methods of cluster analysis revealed the main trends of seasonal and territorial heterogeneity of the bird population. The informativeness of the obtained representations is determined using linear qualitative approximation of community similarity matrices (one of the methods of regression analysis). The selected seasonal aspects are compared with the phenological division according to the seasonal development of nature. The orientation of the constructed graphs in the factor space is compared with the results of non-metric scaling. A map of seasonal and territorial heterogeneity of the surveyed ornithocomplexes has been compiled.
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