Ecosystem Water Availability in Juniper versus Sagebrush Snow-Dominated Rangelands

Variation of net radiation over heterogeneous surfaces: measurements and simulation in a juniper–sagebrush ecosystem

As part of a larger study of carbon dioxide and energy exchange, energy components in an open-canopied juniper–sagebrush ecosystem located in the semi-arid region of Eastern Oregon were measured with the eddy covariance technique. Daytime net radiation averaged 20–30% greater than the sum of sensible, latent and soil heat fluxes. On cloudless days several days after a rain event the imbalance w...

Sagebrush Steppe and Pinyon-juniper Ecosystems-

Principal Investigators Jeanne C. Chambers, E. Durant McArthur, Steven B. Monson, Susan E. Meyer, Nancy L. Shaw, and Robin J. Tausch – USDA Forest Service, Rocky Mountain Research Station Robert R. Blank – USDA Agricultural Research Station Steve Bunting – University of Idaho Richard R. Miller – Oregon State University Mike Pellant – USDI Bureau of Land Management Bruce A. Roundy – Brigham Youn...

Rangelands in Arid Ecosystem

Evolution of Sagebrush Rangelands in the Western United States

In this article we develop a simulation model for estimating the economic efficiency of fuel treatments and apply it to two sagebrush ecosystems in the Great Basin of the western United States: Wyoming Sagebrush Steppe and Mountain Big Sagebrush. These two ecosystems face the two most prominent resource management concerns in sagebrush ecosystems relative to wildfire: annual grass invasion and ...

Fire Severity Modeling of Sagebrush-Steppe Rangelands in Southeastern Idaho

The potential for high severity fires to affect changes in rangelands is considerable, and for this reason, assessing fire severity is critical. We explored fire severity modeling in rangelands by applying post-fire field observations to Satellite Pour l'Observation de la Terre 5 (SPOT 5) imagery using Classification Tree Analysis (CTA) techniques at two 2005 burns. The results of these analyse...