BATS AND WILDFIRE IN NORTHERN CALIFORNIA - HOW DID THE DIXIE FIRE IMPACT BAT SPECIES DISTRIBUTION AND ACTIVITY PATTERNS IN NORTHERN CALIFORNIA? A THESIS UPDATE

Amelia A Tauber; California State University, Sacramento & CDFW; amelia.tauber@wildlife.ca.gov; Dr, Ronald M. Coleman, Dr. Scott D. Osborn

The California Department of Fish and Wildlife (CDFW) Bats and WNS project installed 8 long-term acoustic stations in Plumas and Tehama counties in the spring of 2021. The Dixie Fire began three months after the stations were installed. As the wildfire spread it encompassed three acoustic stations, burned within 1 mile of four stations, and within 3 miles of one station. The Dixie Fire was the largest recorded wildfire in California to date, burning 374,000 hectares at mixed intensities. 55% of that area burned at high severity. For my thesis work, I will analyze acoustic data collected for the CDFW project before, during, and after the fire to improve understanding of how wildfires impact Northern California’s bat communities. To date, 17 species of bat have been found in the study region and over 6 TB (>2 million files) of call data has been collected. Though statistical analyses are not yet completed, observations suggest there were changes in both bat activity levels and species observed between the pre-fire period of 2021 and the same time range post-fire in 2022. This poster will discuss these changes and potential next steps for the study.

Poster Session   Student Paper