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Keyword: sagebrush steppe

Spatio-temporal heterogeneity and habitat invasibility in sagebrush steppe ecosystems

Publications Posted on: April 07, 2009
Bromus tectorum L. (cheatgrass) is the most widespread invasive weed in sagebrushsteppe ecosystems. Invasion by Bromus tectorum produces large-scale changes ecosystem that negatively affect seedling establishment processes. Establishment of invasive and native species plays a key role in determining community invasibility and restoration potential.

Effects of nitrogen availability and cheatgrass competition on the establishment of Vavilov Siberian wheatgrass

Publications Posted on: December 17, 2008
Cheatgrass (Bromus tectorum L.) is the most widespread invasive weed in sagebrush ecosystems of North America. Restoration of perennial vegetation is difficult and land managers have often used introduced bunchgrasses to restore degraded sagebrush communities. Our objective was to evaluate the potential of 'Vavilov' Siberian wheatgrass (Agropyron fragile [Roth] P. Candargy) to establish on cheatgrass-dominated sites.

Variation in ant populations with elevation, tree cover, and fire in a pinyon-juniper-dominated watershed

Publications Posted on: March 14, 2008
Climate change and fire suppression have facilitated expansion of pinyon-juniper woodlands into sagebrush- steppe ecosystems of the Great Basin, USA, resulting in a loss of biological diversity.

Postfire invasion potential of rush skeletonweed (Chondrilla juncea)

Publications Posted on: September 21, 2007
North American sagebrush steppe communities have been transformed by the introduction of invasive annual grasses and subsequent increase in fire size and frequency. We examined the effects of wildfires and environmental conditions on the ability of rush skeletonweed (Chondrilla juncea L.), a perennial Eurasian composite, to invade degraded sagebrush steppe communities, largely dominated by cheatgrass (Bromus tectorum L.).

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