San Diego Management & Monitoring Program

Vertebrate Species
California Gnatcatcher Post-Fire Study

Project description

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 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.

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

Project focus

Project type: Monitoring

Target species: Coastal California gnatcatcher

Target vegetation: coastal sage scrub

Main implementing entity: U.S. Geological Survey

SDMMP lead: Kris Preston

Study lead: Kris Preston

Strategic elements

Budget year: FY15-16; Work plan objectives number: 1.2

Files and Documents

2015 CAGN Regional Monitoring Sample Design

Author(s):Preston, Kris; Kus, Barbara

2017 Regional Occupancy and Post-Fire Recovery of California Gnatcatcher in Southern California

Author(s):Kus, Barbara; Preston, Kris; Houston, Alexandra