The Distribution and Status of Bats at Fort Irwin National Training Center
Final rept. 1 Oct 2010-30 Sep 2012
CALIFORNIA UNIV LOS ANGELES DEPT OF BIOLOGY
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The research assessed bat roosting and foraging habitat on Fort Irwin National Training Center NTC as it relates to the environmental management objectives. Six long-term acoustic monitoring stations were deployed at water sources to establish baseline bat activity and species composition prior to the exclusion of burros or other management activities within and removed from troop training areas. Mist-netting at selected sites augmented the acoustic data, verifying species identification and providing information on age and reproductive condition. Roost surveys primarily mines verified resident species. The current research was compared to the results of the bat inventories performed by Dr. Patricia Brown on the NTC in 1993-94 and subsequent surveys of mines in 1995 and 2005-2006 in areas proposed for the Eastern and Western Expansions. Largely automated long-term acquisition of echolocation data can provide a seasonal and inter-annual perspective on bat activity as biologists at Ft. Irwin continue management interventions at these sites.