Bat diversity and activity : a comparison among Texas Army National Guard sites

Five Texas Army National Guard training sites (Camp Maxey, Fort Wolters, Camp Swift, Camp Bowie, and Camp Mabry) were surveyed for bats using mist nets and Anabat units during spring, summer, and fall from October 2005 to November 2006. A total of seven species, Lasiurus borealis, L. cinereus, L. seminolus, Myotis velifer, Nycticeius humeralis, Perimyotis subflavus, and Tadarida brasiliensis, were documented across all five sites. Based on mist net captures, Camp Maxey had the highest species diversity (five species documented) whereas Camp Swift and Camp Mabry had the lowest (one species documented at each site). The capture of L. seminolus and L. cinereus represent county records for Lamar County (Camp Maxey) and the capture of T. brasiliensis was a county record for Parker County (Fort Wolters). Species occurrence was also recorded at each site using acoustic monitoring. Canonical correspondence analysis of acoustic data revealed no impact due to training on the bat communities.