shortgrass plots in P-J tested statistical prairie, high woodland. significance. elev = P-J woodland + Grazing Great Basin Various habitat Bird abundance One-mile strip Did not occur in Page et al. 1978 (CA/NV) including census sagebrush habitats, low sagebrush but preferred grazed and big over ungrazed plots sagebrush in Shadscale/Indian ricegrass and Nevada bluegrass/sedge habitat types. - Mechanical Northeast UT Density (birds/ha) Applied Density decreased in Norvell et al. 2014 thinning cover experimental year mechanical and thinning to shrub remained low cover. 2,400-m compared reference long-line for the duration of transects in 4 the study. 600-m legs along cardinal bearings for bird surveys. Juniper - Southern OR Sagebrush Abundance Survey of all Abundance Holmes et al. 2015 removal habitats birds seen or continued to increase heard at cut sites. annually conifer removal; benefits may not yet be fully realized as birds continue to recolonize cuts through time. - Multiple Multiple N/A Review of Summary, no Gillihan 2006 management in specific treatment removal P-J woodlands actions. Manage for at least 13% canopy cover; retain snags and partially dead trees. Retain shrublands.
shortgrass prairie, high elev = P-J woodland plots in P-J woodland. tested statistical significance. Grazing + Great Basin (CA/NV) Various habitat including low sagebrush and big sagebrush Bird abundance One-mile strip census Did not occur in sagebrush habitats, but preferred grazed over ungrazed plots in Shadscale/Indian ricegrass and Nevada bluegrass/sedge habitat types. Page et al. 1978 Mechanical thinning - Northeast UT cover Density (birds/ha) Applied experimental mechanical thinning to shrub cover. 2,400-m long-line transects in 4 600-m legs along cardinal bearings for bird surveys. Density decreased in year and remained low compared reference for the duration of the study. Norvell et al. 2014 Juniper removal - Southern OR Sagebrush habitats Abundance Survey of all birds seen or heard at cut sites. Abundance continued to increase annually conifer removal; benefits may not yet be fully realized as birds continue to recolonize cuts through time. Holmes et al. 2015 removal - Multiple Multiple N/A Review of management in P-J woodlands Summary, no specific treatment actions. Manage for at least 13% canopy cover; retain snags and partially dead trees. Retain shrublands. Gillihan 2006
Sagebrush%20birds%20WAFWA%20draft%2010-27-16.docx