The Adamello-Brenta Natural Park bat community (Mammalia, Chiroptera): distribution and population status

Bats were censused in the Adamello-Brenta Natural Park (Trentino, central
Italian Alps) in May-September 1999 and 2000, by mist-netting and roost surveys. In all, 90
sites (19 caves, 50 buildings and 21 foraging sites), over an area of about 618 km2, were
checked. The bat species distribution in both the Park and the surrounding areas was obtained
by using field data, museum records and literature information. Atotal of 19 species was
recorded: of these, one (Myotis bechsteinii) was known from a museum collection and 18
were recorded in the field (Rhinolophus ferrumequinum, R. hipposideros, Myotis blythii, M.
daubentonii, M. emarginatus, M. mystacinus, M. nattereri, Pipistrellus kuhlii, P. nathusii, P.
pipistrellus, Nyctalus leisleri, Hypsugo savii, Eptesicus nilssonii, E. serotinus, Vespertilio
murinus, Barbastella barbastellus, Plecotus alpinus, P. auritus). Local distribution, habitat
use and body size parameters of the species were studied, and selection of roosts and foraging
sites by the bat community was analysed with logistic regression. The conservation status
of the bat community is also discussed. We document the third record of breeding by
Pipistrellus nathusii and the fourth Eptesicus (Amblyotus) nilssonii nursery in Italy, as well
as the first roosting sites of the recently described Plecotus alpinus.