Type: report

Article abstract: Jones & Stokes conducted a baseline biodiversity study of the County of San Diego?s Boulder Oaks Open Space Preserve (Preserve) to provide the Department of Parks and Recreation with the biological data to develop Area Specific Management Directives (ASMDs). The Preserve consists of very high value natural communities and is located approximately three miles south of the unincorporated township of Ramona, between State Route 67 and Mussey Grade Road, in central San Diego County, California. During 2007, Jones & Stokes? biologists conducted the following studies, in addition to general, qualitative evaluation of the entire Preserve: (1) mapping of vegetation communities, (2) a floral inventory including rare plant surveys, (3) a focused survey for Quino Checkerspot butterfly, (4) a habitat evaluation to address Arroyo Toad, (5) pitfall trap arrays to sample amphibians, reptiles, and small mammals, (6) avian point counts, (7) a nocturnal bird survey, (8) acoustic sampling and roost surveys for bats, (9) a track and sign survey for medium-tolarge mammals, and (10) a camera station survey for medium-to-large mammals. Due to the low rainfall during the 2006-2007 winter, results of these surveys may under represent the diversity of plants and wildlife that occur within the Preserve.