Vertebrate Species in progress

Bat Community Management and Monitoring

Both the pallid bat (Antrozous pallidus) and Townsend’s big-eared bat (Corynorhinus townsendii), have been proposed as covered species in the North County MSCP plan and are included in the MSP. These two species are believed to be at high to moderate risk of loss in the MSP area because of their low numbers and sensitivity to human disturbance. However, their population status, locations of roosts (diurnal, nocturnal, and maternity), primary foraging areas, water sources used, threats, and connectivity between populations in the MSP area are largely unknown. For this reason, San Diego County-wide surveys for these species were needed to document where they were found and what their current population status was. Information gleaned from these surveys will allow land managers to implement appropriate management actions to conserve their habitats. The MSP identified this work as a priority for implementation starting in 2015. In 2015, the SDNHM under contract to USGS surveyed areas with known pallid and Townsend's big-eared bat occurrences as identified in the MSP and in other high potential sites based on previous survey work by USGS and the SDNHM. A variety of methods were used (roost surveys, mist-netting, acoustic surveys, etc.) to identify and map the primary roosts and foraging areas used by pallid bat and Townsend's big-eared bat.
Project Focus
Project type: Monitoring
Investigator: Robert N. Fisher; Amy Vandergast
Main implementing entity: U.S. Geological Survey, Western Ecological Research Center
Partner: San Diego Natural History Museum
Project Page manager: Sarah McCutcheon
SDMMP lead: Kris Preston
Study lead: Brian Myers; Drew Stokes
Project Funding
San Diego Association of Governments
Project Protocol
Reports Available: Yes
File name Lead Author Year Type
Bat Management in San Diego County Myers, Brian; Stokes, Drew; Preston, Kris; Fisher, Robert N.; Vandergast, Amy 2022 powerpoint presentation
Bat virome study and ties to emerging infectious diseases Fisher, Robert N. 2022 powerpoint presentation
DRAFT Final report for focused pallid bat (Antrozous pallidus) and Townsend’s big-eared bat (Corynorhinus townsendii) surveys in San Diego County, California San Diego Natural History Museum 2018 report
Recording - May 2022 SDMMP Management and Monitoring Coordination Meeting Fisher, Robert N.; Vandergast, Amy; Myers, Brian 2022 recording