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Displaying 31 - 40 of 65
Ralphs, McDaniel
Broom snakeweed is a native weed widely distributed on rangelands of western North America. It often increases to near monocultures following disturbance from overgrazing, fire, or drought. This paper presents an up-to-date review of broom snakeweed…
Year: 2011
Type: Document
Pocewicz, Kiesecker, Jones, Copeland, Daline, Mealor
Conservation easements are the primary tool used globally by land trusts and governmental agencies to achieve conservation goals on private lands, but empirical evaluations of their effectiveness are lacking. Here we compared biodiversity in…
Year: 2011
Type: Document
Pasch, Koprowski
Human suppression of fire has resulted in altered species composition and dense forest stands across the western United States. Accumulation of understory shrubs makes forests vulnerable to catastrophic fire and can impact animal use, whereas fire…
Year: 2011
Type: Document
Milder, Clark
Conservation development projects combine real-estate development with conservation of land and other natural resources. Thousands of such projects have been conducted in the United States and other countries through the involvement of private…
Year: 2011
Type: Document
Lowe, Pothier, Savard, Rompre, Bouchard
We studied the availability and characteristics of snags and their use by cavity-nesting birds in the northeastern part of the Canadian boreal forest. We built up two long-term (>200 years) chronosequences following time since the last fire in…
Year: 2011
Type: Document
Litt, Steidl
Invasions by nonnative plants have changed the structure of many terrestrial ecosystems and altered important ecological processes such as fire, the dominant driver in grassland ecosystems. Reestablishing fire has been proposed as a mechanism to…
Year: 2011
Type: Document
Garcia-Reyero, Habib, Pirooznia, Gust, Gong, Warner, Wilbanks, Perkins
At military training sites, a variety of pollutants such as hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), may contaminate the area originating from used munitions. Studies investigating the mechanism of toxicity of RDX have shown that it affects…
Year: 2011
Type: Document
Farmer, Knapp, Meretsky, Chancellor, Fischer
The use of conservation easements as a conservation mechanism for private land has increased greatly in the past decade; conservation easements now protect over 15 million ha across the United States from residential and commercial development. We…
Year: 2011
Type: Document
DeMaso, Hernandez, Brennan, Bingham
The simple saddlepoint approximation (SSA) uses the mean, variance, and skewness (a measure of the asymmetry of the distribution) of a data set to algebraically approximate the probability density function of a selected variable. We compared habitat…
Year: 2011
Type: Document
Bock, Jones, Kennedy, Bock
Livestock grazing and fire influence the composition of desert grassland communities, including their rodent populations. However, there have been few studies of the interactions between grazing and wildfire in arid grasslands of the southwestern…
Year: 2011
Type: Document