Biotopic structure of bats communities inhabiting flood plain ecosystems of the Samarskaya Luka

The biotopic structure of bats communities inhabiting right bank flood plains in the northern part of the Samarskaya Luka was investigated. During 2006-2009 1868 individuals of 15 species were captured altogether. 8 types of biotopes were distinguished. It was established that habitat biotopic features make a major contribution to changing of bats communities characteristics. The maximal number of species was noted for intrazonal flood plains ecosystems: sedges, water meadows and alder forests. The lowest bats population density was registered in willows and radical wood plantations of over flood plain terraces. P. pipistrellus s.l., P. kuhlii and E. serotinus are monotopic species (prefer only one type of biotopes). The complex of mostly everytopic species includes N. noctula, P. nathusii, M. daubentonii and E. nilssonii. Specific composition of bats is the most similar in alder forests and middle age sedges.