cardinal bearings for bird surveys. - Plowing / Central UT Big sagebrush, Bird density Bird census with Sage Thrasher Castrale 1982 chaining cold desert (territories/16 ha) spot-mapping was only found in method and habitat patches technique containing the largest shrubs. + Juniper Central OR Mountain big Bird density Compared Bird communities Reinkensmeyer et removal sagebrush (birds/ha/yr) vegetative observed across al. 2007 successional structure and bird landscape types, gradient communities impacts surmised among 4 from results. successional Strong preference states for shrub-steppe habitats and reduced density in post-burn grassland and mid-successional juniper. Juniper + Southeastern OR Sagebrush Occurrence Fixed-radius Abundance and Noson et al. 2006 removal Steppe, point count occurrence mountain big positively sagebrush correlate with sagebrush cover and height and negatively correlate with juniper presence Juniper + Central OR Semi-arid, Abundance Sampled avian Highest density in Reinkensmeyer removal upland plant (birds/ha/yr), diversity and veg shrub-steppe, but 2000 communities communities in 4 still occur in cover types: grassland, juniper at lower shrub-steppe; density. No mid-successional occurrence in old western juniper; growth juniper. old-growth western juniper
cardinal bearings for bird surveys. Plowing / chaining - Central UT Big sagebrush, cold desert Bird density (territories/16 ha) Bird census with spot-mapping method and technique Sage Thrasher was only found in habitat patches containing the largest shrubs. Castrale 1982 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 types, impacts surmised from results. Strong preference for shrub-steppe habitats and reduced density in post-burn grassland and mid-successional juniper. Reinkensmeyer et al. 2007 Juniper removal + Southeastern OR Sagebrush Steppe, mountain big sagebrush Occurrence Fixed-radius point count Abundance and occurrence positively correlate with sagebrush cover and height and negatively correlate with juniper presence Noson et al. 2006 Juniper removal + Central OR Semi-arid, upland plant communities Abundance (birds/ha/yr), diversity Sampled avian and veg communities in 4 cover types: grassland, shrub-steppe; mid-successional western juniper; old-growth western juniper Highest density in shrub-steppe, but still occur in juniper at lower density. No occurrence in old growth juniper. Reinkensmeyer 2000
Sagebrush%20birds%20WAFWA%20draft%2010-27-16.docx