leads to high occurrence. Wildfire - OR, ID, UT, Big sagebrush Bird counts Flushing bird Brewer’s Sparrow Welch 2002 WY, MT counts only found on unburned sites, none on burned. Wildfire - Central UT Big sagebrush, Bird density Bird census with Brewer’s Sparrow Castrale 1982 cold desert (territories/16 ha) spot-mapping densities were method and flush much lower on the technique burned site and would have likely been entirely absent without sagebrush islands. Prescribed - Southcentral Sagebrush Density (birds/ha) Line sampling Positive Erickson 2011 burning WY (Stratton habitats transect with correlation with Sagebrush including stratified random local tall shrub Ecological mountain big design cover. Large, Research Site) sagebrush and contiguous burns black translated into sagebrush near complete interspersed avoidance. with antelope Proximity to bitterbrush unburned plots may be more important than retention of large unburned swaths. Prescribed +/- Eastern OR High-elevation Bird abundance 5-minute Highest Holmes 2007 burning mountain big surveys abundance at sagebrush unburned plots with decreasing abundance at higher burn severities. Difference between low severity (<30%) and unburned was
leads to high occurrence. Wildfire - OR, ID, UT, WY, MT Big sagebrush Bird counts Flushing bird counts Brewer’s Sparrow only found on unburned sites, none on burned. Welch 2002 Wildfire - Central UT Big sagebrush, cold desert Bird density (territories/16 ha) Bird census with spot-mapping method and flush technique Brewer’s Sparrow densities were much lower on the burned site and would have likely been entirely absent without sagebrush islands. Castrale 1982 Prescribed burning - Southcentral WY (Stratton Sagebrush Ecological Research Site) Sagebrush habitats including mountain big sagebrush and black sagebrush interspersed with antelope bitterbrush Density (birds/ha) Line sampling transect with stratified random design Positive correlation with local tall shrub cover. Large, contiguous burns translated into near complete avoidance. Proximity to unburned plots may be more important than retention of large unburned swaths. Erickson 2011 Prescribed burning +/- Eastern OR High-elevation mountain big sagebrush Bird abundance 5-minute surveys Highest abundance at unburned plots with decreasing abundance at higher burn severities. Difference between low severity (<30%) and unburned was Holmes 2007
Sagebrush%20birds%20WAFWA%20draft%2010-27-16.docx