decreasing fewer BRSP elevation detections. Invasive - Central NV Sagebrush Relative bird Two parallel Seeded plots have McAdoo et al. species control sites abundance transects with 5 reduced densities, 1989 – crested and crested circular plots at though wheatgrass wheatgrass each site comparatively treatment sites high densities to other birds observed. Invasive - Eastern ID Big sagebrush Successful nests Visual observation No Brewer’s Reynolds and species and former in 4-ha grid. Sparrow 1980 – crested sagebrush occurrence on wheatgrass range reseeded grazed or with crested ungrazed plots wheatgrass seeded with crested wheatgrass. Mine - South Central Bird Density 73 censuses with Reclaimed sites Krementz and reclamation WY (birds/ha/census day) transects through dominated by 1982 steppe with native and common saltbrush and reclaimed habitats halogeton greasewood (Halogeton interspersed. glomeratus). Abundant on native site but rarely encountered on reclaimed site. Herbicide NC East-central CA, Shrubby, brush Estimated population Spot map Treatment did not Beaver 1976 northwest of field with size per 40 ha technique and nest affect avian Truckee. grasses and location species scattered composition, Jeffrey pine population size, or relative abundance. Brewer’s Sparrow not impacted. Herbicide - Southcentral Big sagebrush Density (birds Census and nest Bird densities Schroeder and WY (Stratton sighted/10 acres2) observation. were 67% lower 1 Sturges 1975 Sagebrush Herbicide 2,4-D year after
decreasing elevation fewer BRSP detections. Invasive species – crested wheatgrass - Central NV Sagebrush control sites and crested wheatgrass treatment sites Relative bird abundance Two parallel transects with 5 circular plots at each site Seeded plots have reduced densities, though comparatively high densities to other birds observed. McAdoo et al. 1989 Invasive species – crested wheatgrass - Eastern ID Big sagebrush and former sagebrush range reseeded with crested wheatgrass Successful nests Visual observation in 4-ha grid. No Brewer’s Sparrow occurrence on grazed or ungrazed plots seeded with crested wheatgrass. Reynolds and 1980 Mine reclamation - South Central WY steppe with saltbrush and greasewood interspersed. Bird Density (birds/ha/census day) 73 censuses with transects through native and reclaimed habitats Reclaimed sites dominated by common halogeton (Halogeton glomeratus). Abundant on native site but rarely encountered on reclaimed site. Krementz and 1982 Herbicide NC East-central CA, northwest of Truckee. Shrubby, brush field with grasses and scattered Jeffrey pine Estimated population size per 40 ha Spot map technique and nest location Treatment did not affect avian species composition, population size, or relative abundance. Brewer’s Sparrow not impacted. Beaver 1976 Herbicide - Southcentral WY (Stratton Sagebrush Big sagebrush Density (birds sighted/10 acres2) Census and nest observation. Herbicide 2,4-D Bird densities were 67% lower 1 year after Schroeder and Sturges 1975
Sagebrush%20birds%20WAFWA%20draft%2010-27-16.docx