Vertebrate Species

California Gnatcatcher Post-Fire Study

This is a planned 5-year study. The purpose of this study is to: 1) Determine whether there has been further recovery of CAGN in areas burned in 2003 (i.e., occupancy greater than 10%). 2) Determine if there is a difference in CAGN occupancy between areas burned in 2003, 2007, and 2014. 3) Determine the relationship between CAGN occupancy and vegetation composition, cover and structure. 4) Determine the composition, cover, and structure of CSS vegetation in areas with different fire histories and evaluate patterns of vegetation recovery based upon lime since fire, spatial distribution, previous land use, and environmental conditions.
Project Focus
Project type: Monitoring
Target vegetation: coastal sage scrub
Investigator: Barbara Kus
Main implementing entity: U.S. Geological Survey
SDMMP lead: Kris Preston
Study lead: Kris Preston
Project Protocol
Name: CAGN Regional Survey and Veg Sampling Protocol
Description: California Gnatcatchers will be surveyed using the wandering transect method, where we cover a 2.25 ha plot by walking slowly and methodically through the sage scrub habitat, looking and listening for gnatcatchers. The California Gnatcatcher Regional Sampling Program includes collection of vegetation covariate data to better understand gnatcatcher habitat relationships and management needs across conserved and participating military lands in southern California.
Sampling Techniques: Point counts, vegetation relevees
94.92KB CAGN Regional Survey and Veg Sampling Protocol.pdf
Strategic Elements
Budget year: FY15-16
Work plan objectives number: 1.2
Project Location
County: Baja California, Riverside, San Diego
General: Central-central, Central-west, North-central, North-west, South-central, South-west
MU: 1, 11, 2, 3, 4, 5, 6, 7, 8
File name Lead Author Year Type
CAGN Regional Monitoring Sample Design Preston, Kris; Kus, Barbara 2015 protocol supplement
File name Lead Author Year Type
Regional Occupancy and Post-Fire Recovery of California Gnatcatcher in Southern California Kus, Barbara; Preston, Kris; Houston, Alexandra 2017 powerpoint presentation
Project Data - Online Map
Project Files
File name Lead Author Year Type
2020 Regional & PostFire Surveys with not sure