. 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. Figure 17. An example of subclass 2(A), late-seral vege- tation dominated by native grasses and forbs, with sagebrush reestablishing after a recent fire. This example is on the east slope of Blue Mountain in the Trout Creek GMA at an elevation of 5,430 feet. Photo taken by Jon Sadowski. Subclass 2(B): This vegetation is dominated by introduced annual grasses and forbs, such as cheatgrass, medu
. 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. Figure 17. An example of subclass 2(A), late-seral vege- tation dominated by native grasses and forbs, with sagebrush reestablishing after a recent fire. This example is on the east slope of Blue Mountain in the Trout Creek GMA at an elevation of 5,430 feet. Photo taken by Jon Sadowski. Subclass 2(B): This vegetation is dominated by introduced annual grasses and forbs, such as cheatgrass, medusahead, and tumblemustard, where sagebrush species remain part of the vege- tation in scattered patches or as individual plants that have escaped fire (photo not available.). Sagebrush canopy cover is declining because of frequent fire through time. Subclass 2(B) areas do not meet the habitat needs of wildlife species that rely primarily on sagebrush and associated understory herbaceous species. This vegetation is in a degraded vegetation state (Habich 2001) and is not desirable to sustain in its present condition if the site has the potential to support sagebrush. Before converting to annual grasses and annual forbs, subclass 2(B) vegetation is more likely to have been dominated by Wyoming big sagebrush or basin big sagebrush than either low sagebrush or mountain big sagebrush (Miller and Eddleman 2001). Subclass 2(B) vegetation is prone to dis- turbance by wildfire at short-interval frequencies (Billings 1948; Pellant 1990). High plant density of these annual plants, along with great amounts of litter and frequent wildfire, effectively eliminate biological soil crusts. The combination of these factors inhibits the recovery of native plants and biological soil crusts (Kaltenecker et al. 1999; Hilty et al. 2004). Subclass 2(C): This vegetation is dominated by seedings of crested wheatgrass or other intro- duced perennial grasses, where sagebrush species are in the early stages
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