MODELING AND MAPPING HABITAT SUITABILITY FOR FORAGING ACTIVITY OF CRYPTIC FOLIAGE-ROOSTING BATS IN CENTRAL COASTAL CALIFORNIA.
Bethany C. Schulze; CSU Monterey Bay; P.O. Box 8043, Santa Cruz, CA, 95061; (831) 359-3754; bschulze@csumb.edu; Fred G. Watson, Jennifer M. Duggan, Winifred F. Frick
We detected and modeled bat habitat selection for foraging activity in the Monterey Bay Area, California, to explore a potential method for determining regional distribution of two species of cryptic foliage-roosting bats, hoary bats and red bats. We postulated that foraging activity of these bat species would in part be determined by the extent of forest and grassland cover, and the proximity to urbanization. We walked transects in natural and urban areas and monitored bats using an Echometer Touch bat detector. We also collected data from passive acoustic monitoring and mist netting efforts. All acoustic calls were analyzed to identify bats species using Sonobat software. We will determine available habitat based on a buffer area surrounding each transect, detector, or netting site. Models will be constructed based on chosen land cover covariates at multiple spatial scales and compared using Akaike's Information Criterion. We expect that the results will support the postulate that hoary bats and red bats select specific natural areas at further distances from urbanization for foraging. We will use the results to guide site selection for a more in-depth spatial analysis of habitat use for foraging.
Poster Session