that merges into hold territory in plots until sagebrush with after fledgling occurred. decreasing Likely bred off plot and elevation moved onto plot after fledgling. Juniper + Central OR Mountain big Bird density Compared vegetative Bird communities observed removal sagebrush (birds/ha/yr) structure and bird across landscape successional communities among 4 impacts surmised from gradient successional states results. Strong preference for shrub-steppe habitats and reduced density in post-burn grassland and juniper. NC / + Juniper UT, NV, ID, OR Sagebrush and Bird counts Point transects with Results indicate that removal woodland distance sampling. management treatments that ecotones residual woodland cover that are not adjacent to extensive sagebrush stands are unlikely to establish Sagebrush Sparrow population. - Invasive Central WA Sagebrush Steppe Bird Count / Walking transects Sage sparrows most common species interspersed with frequency of in areas with big sagebrush – Cheatgrass disturbed and occurrence and least common in burned invaded patches habitats invaded by Cheatgrass. - Invasive Central NV Sagebrush control Relative bird Two parallel transects with Abundance higher at species and crested abundance 5 circular plots at each site sagebrush control sites. – crested wheatgrass Abundance directly wheatgrass treatment sites correlates with shrub cover. However, abundance increased in time as sagebrush reestablished. - Invasive Eastern ID Big sagebrush and Successful nests Visual observation in 4-ha No sage sparrow occurrence species former sagebrush grid. is grazed or ungrazed plots – crested range reseeded seeded with crested wheatgrass with crested wheatgrass. wheatgrass
that merges into sagebrush with decreasing elevation hold territory in plots until after fledgling occurred. Likely bred off plot and moved onto plot after fledgling. Juniper removal + Central OR Mountain big sagebrush successional gradient Bird density (birds/ha/yr) Compared vegetative structure and bird communities among 4 successional states Bird communities observed across landscape impacts surmised from results. Strong preference for shrub-steppe habitats and reduced density in post-burn grassland and juniper. Juniper removal NC / + UT, NV, ID, OR Sagebrush and woodland ecotones Bird counts Point transects with distance sampling. Results indicate that management treatments that residual woodland cover that are not adjacent to extensive sagebrush stands are unlikely to establish Sagebrush Sparrow population. Invasive species – Cheatgrass - Central WA Sagebrush Steppe interspersed with disturbed and invaded patches Bird Count / frequency of occurrence Walking transects Sage sparrows most common in areas with big sagebrush and least common in burned habitats invaded by Cheatgrass. Invasive species – crested wheatgrass - Central NV Sagebrush control and crested wheatgrass treatment sites Relative bird abundance Two parallel transects with 5 circular plots at each site Abundance higher at sagebrush control sites. Abundance directly correlates with shrub cover. However, abundance increased in time as sagebrush reestablished. 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 sage sparrow occurrence is grazed or ungrazed plots seeded with crested wheatgrass.
Sagebrush%20birds%20WAFWA%20draft%2010-27-16.docx