Ornithological complexes’ structure of technogenically disturbed territories of the left-bank part of the South Minusinsk Basin

This paper deals with the species and ecological structure of ornithological complexes on the territories of quarry excavations. The research was carried out in the left-bank part of the South Minusinsk basin. 6 quarries were researched all the year round, 4 quarries were researched incidentally. The quarries were of various purposes (extraction of sand, clay, rubble, storage of domestic garbage), age (from 1 to 15 years) and size (from 1 to 20 hectares). 39 species of birds have been identified, which is more than 15% of the avifauna of the basin. The largest numbers of species (from 4 to 6 each) are the Fringillidae, Corvidae, Sylviidae, Muscicapidae families. The nature of the species stay on the territory has been established. Nesting species have been recorded to be 19, visitors 20. Only in summer there are 25 species, only in winter there are 7 species, 7 species more are marked on sites both in summer and winter. Dendrophilic and petrophilic species are mainly nested. The nesting of Passer montanus (L.) and Oenanthe oenanthe (L.) was marked on all sites, the nesting of Riparia riparia (L.) was marked on the majority sites. Most species are synanthropic. The species richness of birds is shown to be determined, first of all, by the habitat structure: the presence of vertical soil breaks, stone structures, trees, shrubs, grass cover, reservoirs. The presence of food waste and the nature of the surrounding biotopes are also of particular importance.