Technical Report
 

Spatial and temporal changes of sage grouse habitat in the sagebrush biome

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  • This paper was written as a book chapter on the ecology and biology of sage grouse. Because the book was never fully developed, we chose to publish the information with the OSU Agricultural Experiment Station.
  • Sage grouse (Centrocercus urophasiamus) occur in regions that are spatially diverse and temporally dynamic in western North America. During the past 130 years, significant changes in disturbance regimes have affected their habitat. Plant communities in existence today are unique from any other time period because of altered disturbance regimes, confounded by a continual change in climate. In some portions of their range, sage grouse populations have been reduced or eliminated from loss of habitat through land conversion to agriculture or shifts from perennial shrub grasslands to introduced exotic annual grasslands or pinyon-juniper woodlands. However, in other sections of their range, changes in plant community composition and structure have been minimal. Causes for decline in sage grouse populations in these areas are less clear and often debated. Spatial and temporal diversity significantly affect the quality of sage grouse habitat. Because of the diversity of biotic and abiotic factors and land use history across the range of sage grouse, plant community structure and composition have responded differently throughout this region. When considering a sagebrush steppe restoration plan or sage grouse habitat management plan, one must take into account landscape heterogeneity, site potential, site condition, and habitat needs of sage grouse during different segments of their life cycle: breeding, nesting, brood rearing, wintering, etc. This paper describes the spatial diversity of sage grouse range, short- and long-term dynamics and disturbance regimes across this ecosystem, and potential management implications related to sage grouse habitat.
  • Published April 2000. Reviewed January 2016. Please check for up-to-date information in the OSU Extension Service Catalog: http://extension.oregonstate.edu/catalog
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