College of Agriculture, Biotechnology & Natural Resources
A taxonomic field guide of Nevada shrubs that includes state of the art photography along with vegetative, inflorescence and ecological keys; also includes glossary of taxonomic terms and a complete Latin and common name index.
There are more than 100 species of range grasses in the mountains and valleys of Nevada's Great Basin, and the author describes them in both technical and practical language. All grasses are illustrated in color with explanations given as to the various parts of the grass plant and their locations on the landscape.
During the late twentieth century, public perception of Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis) [Beetle & A. Young] changed from being a ‘weed’ to a valuable resource in danger of extirpation in some landscapes. The two polar perspectives, perceiving it to be of no value and only competitive with grasses, or perceiving it to be so valuable and scarce that we must never control it, neither serve or benefit land managers or the wildlife that depend on this important habitat. During this period, a focus on rangeland condition has shifted to a focus on ecological thresholds and the information needed to allocate limited financial and other resources to those areas, times, and actions that are most important for maintaining rangeland health.
Cattle grazed a cheatgrass-dominated pasture during the fall dormant period for four years (2006-2009) and were provided a protein nutrient supplement to improve their distribution, uptake of dry feed and production performance. Cheatgrass standing crop was reduced by 43 percent to 80 percent each year, and cattle weight and body condition score increased each year. The fall-grazed site had less cover from cheatgrass than the ungrazed site had. The fall-grazed site also had no decline in perennial grass cover. Cheatgrass density was 64 percent less on the grazed site after two years, and had 19 fewer plants per square foot than the adjacent ungrazed area. The seedbank potential for cheatgrass decreased much more on grazed areas than on the adjacent ungrazed areas, with a 95 percent or greater reduction in the seedbank potential. The difference was due to the grazing treatment.