By Roger L. Sheley
This precious reference for land managers and scholars of traditional source administration offers functional, science-based info wanted for sustainable weed administration and land recovery.
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Additional resources for Biology and Management of Noxious Rangeland Weeds
Outcompeting the native plant community, the weeds create a monoculture that can increase wind and water erosion; decrease capture, storage, and proper release of precipitation; and alter nutrient cycling. Weed monocultures further reduce biological diversity by displacing the macro- and microfauna that depend on native plants for habitat and food. The grazing capacity of weed-infested land can be reduced by up to 75%. Weeds prefer highly disturbed sites such as river and stream banks, trailheads, roadsides, building sites, trails, wildlife bedgrounds, overgrazed areas, and campgrounds.
Disturbances such as livestock trampling and construction expose subsurface organic matter and incorporate litter into the soil. By adding additional oxygen and water to organic matter, a disturbance increases soil microbial activity and subsequent mineralization, the release of inorganic molecules which are available for plant uptake. Many weeds rapidly exploit these newly available nutrients (Best et al. 1980, Belcher and Wilson 1989). This may be one reason that the density of weedy plants increases as the intensity of disturbance increases (Jensen 1995).
Miller, David Clausnitzer, and Michael M. Borman 271 Oxeye Daisy Bret E. Olson and Roseann T. Wallander 282 Poison Hemlock Joseph M. DiTomaso 290 Purple Loosestrife Barbra Mullin 298 Rush Skeletonweed Roger L. Sheley, Joseph M. Hudak, and Robert T. Grubb 308 Page v Russian Knapweed Tom D. Whitson 315 Snakeweeds Tracy M. Sterling, David C. Thompson, and Kirk C. McDaniel 323 Sowthistles Richard K. Zollinger and Robert Parker 336 Spotted Knapweed Roger L. Sheley, James S. Jacobs, and Michael L. Carpinelli 350 Squarrose Knapweed Cindy Talbott Roché 362 St.
Biology and Management of Noxious Rangeland Weeds by Roger L. Sheley