Browsing Rangelands, Volume 34, Number 4 (2012) by Authors
Estimating Effects of Targeted Conservation on Nonfederal RangelandsWeltz, Mark; Spaeth, Ken (Society for Range Management, 2012-08-01)Estimating the effects of conservation practices on rangelands is extremely challenging, compared with cropland, because rangelands consist of a mosaic of plant species with highly diverse landscapes of mixed land ownership and management objectives. The checkerboard pattern of land ownership on rangelands in the West, a legacy of 19th century government homestead and railway construction policies, makes conducting assessments and estimating effects of conservation at landscape or watershed scale a challenging endeavor. This is complicated by the interaction of climate, topography, plants, soil parent material, and land management that interact to yield a mosaic of plant communities over time. Rangeland communities are further influenced by episodic disturbances, such as insect outbreaks, fire, drought, and flood. The most-developed quantitative indicators of conservation effects currently on rangelands are 1) modeled soil erosion, and 2) the number and types of invasive plant species. These indicators can be used to infer impacts on water availability and quality, wildlife habitat quality or suitability for target wildlife species, forage availability for domestic livestock and/or wildlife, and vulnerability to wildfire, which will directly influence sustainability of the plant community.
Research to Practical Use: On-the-Ground SuccessesClements, Charlie D.; Young, James A.; Harmon, Daniel N.; Weltz, Mark (Society for Range Management, 2012-08-01)The US Department of Agriculture–Agricultural Research Service (USDA-ARS) Great Basin Rangelands Research Unit services a large area that runs from south-central Nevada to the Oregon border and from northeastern California to the Utah border. This vast array of landscapes has a variety of stakeholders who request assistance in addressing range, wildlife, and sustainable agriculture issues. At the 64th Annual Society for Range Management Meetings held in Billings, Montana, in February 2011 we were invited to present at a special symposium “Agency Accomplishments—Making a Difference on the Ground.” Here we present three case studies of our efforts to 1) research the problem at hand, 2) deliver practical on-the-ground practices to minimize or eliminate the problem, and 3) improve sustainable agricultural practices.