Year-to-year Reuse of Tree-roosts by California Bats (Myotis californicus) in Southern British Columbia

摘要: Abstract To document year-to-year reuse of roost trees by forest-dwelling bats we monitored in southern British Columbia that first identified as maternity roosts California (Myotis californicus) 1995. Initially tracking radio-tagged individuals. Then revisited each tree subsequent years up to 2000. At the start study roosted under loose bark or cavities dead trees. Seven eight were still standing 2000, although all had lost since 1995, particularly ponderosa pines (Pinus ponderosa). In after moved and tags fallen off, either occupied colonies 5 52 M. californicus they unoccupied. contrast, counts indicated rarely used same most observations one two bats. Thus, while continued use over y period, numbers individuals declined much m...