DYNAMICS OF ORNITHOCOENOSIS IN A RESIDENTIAL DISTRICT IN BRATISLAVA DURING 1979-1992

Ornithocoenosis was regularly studied over a 5-hectare area in a resid ential district in Bratislava from 1979 to 1992. The quality and quali ty of bird species, their relationship to the biotope, their occurrenc e in respective seasons of the year, as well as the frequency of their occurrence were investigated. During the past 14 years 110 bird speci es have been registered. Of them, 31 species were nidificants. Species and individual variability, mainly during the nesting period, was dir ectly dependent on climatic conditions as well as on the amount of pre dators. A characteristic feature of the ornithocoenosis of this reside ntial district was a relative stability of species composition in the respective years. This was reflected in the high number (31) of eucons tant species. The importance of the studied intravillan biotope for bo th nestings and hibernants has been confirmed.