. Assessing big sagebrush at multiple spatial scales : an example in southeast Oregon. Big sagebrush; Sagebrush; Sage grouse; Habitat (Ecology); Vegetation monitoring; Vegetation dynamics; Range ecology. > *w I I % Figure 23. An example of subclass 4(B) in the swale, with late-seral vegetation having a shrub canopy cover dominated by basin big sagebrush, on the 15 Mile allotment in the Trout Creek GMA at an elevation of 6,200 feet. Photo taken by Jon Sadowski. 1994; Connelly et al. 2000; Miller and Eddleman 2001), brood-rearing habitat (Miller and Eddleman 2001), and winter habitat (Connell
. Assessing big sagebrush at multiple spatial scales : an example in southeast Oregon. Big sagebrush; Sagebrush; Sage grouse; Habitat (Ecology); Vegetation monitoring; Vegetation dynamics; Range ecology. > *w I I % Figure 23. An example of subclass 4(B) in the swale, with late-seral vegetation having a shrub canopy cover dominated by basin big sagebrush, on the 15 Mile allotment in the Trout Creek GMA at an elevation of 6,200 feet. Photo taken by Jon Sadowski. 1994; Connelly et al. 2000; Miller and Eddleman 2001), brood-rearing habitat (Miller and Eddleman 2001), and winter habitat (Connelly et al. 2000)â and those of other wildlife species that rely pri- marily on sagebrush and associated understory herbaceous species. This vegetation is desirable to sustain as patches, intermingled with subclasses 1(A), 2(A), 2(C), 3(A), 3(B), 3(C), and 5(A). Subclass 4(C): This vegetation has shrub canopy cover dominated by mountain big sagebrush, with tree seedlings (particularly western juniper) in the understory or in the intershrub spaces (photo not available.). Western juniper encroach- ment and increasing density can result in the near total loss of sagebrush canopy cover, partic- ularly in the mountain big sagebrush and low sagebrush dominated vegetation types (Miller and Eddleman 2001). Subclass 4(C) vegetation currently meets the habitat needs of wildlife species that rely primarily on sagebrush and asso- ciated understory herbaceous species. However, with continued growth and increasing density of western juniper, sagebrush will decline, and subclass 4(C) vegetation will likely transition to subclass 2(D) and, subsequently, subclass 1 (D) vegetation. During this transition, fewer habitat needs will be met for wildlife species that rely primarily on sagebrush and associated understory herbaceous species. Excessive livestock grazing pressure and fire suppression since Euro-American settlement have been the main contributors to the formation of many of these subclass 4
Size: 1659px × 1505px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcollectionamericana, bookcollectionfedlink, bookleafnumber39
