The use by bats (Chiroptera: Vespertilionidae) of various habitat types in Moldova and the Danube Delta (Romania)
Our investigations were carried out in Moldova and the Danube Delta areas during summer periods of 2006-2010. The habitat types which were investigated were: 23 humid areas, 13 woodlands, 7 settlements - streetlamps, 25 car transects. Woodlands and humid areas are the most important habitat types to the majority of bat species, whereas the habitats along roads (mostly made in open areas) are less important. Pipistrellus kuhlii and Nyctalus noctula, also Eptesicus serotinus, Nyctalus leisleri and Vespertilio murinus proved generalists in using foraging habitats, these species being most frequently recorded. In the humid areas, Nyctalus noctula (25.2%), Myotis sp. (24%) and Pipistrellus nathusii/Pipistrellus kuhlii (22.3%) are the most abundant species. In the woodlands, Nyctalus noctula is the most abundant species (19.5%), followed by Pipistrellus nathusii/Pipistrellus kuhlii (17.6%) and Myotis sp. (11.2%). Along the roads, Nyctalus noctula (44%) and Eptesicus serotinus (13.2%) are the most abundant species. At the streetlamps, Nyctalus noctula (45.4%) and Nyctalus leisleri (12.8%) are the most abundant species. In the settlements, Pipistrellus kuhlii (26%) and Nyctalus noctula (23%) are the most abundant species.