forest health land management manual weed-control monitoring productivity rangelands weeds
A key issue for forest and rangeland health and productivity in eastern Oregon and Washington, USA is invasive species. Although some exotic plant introductions were accidental, many were intentional for wildlife habitat improvement, ornamental purposes, wood or fibre production, soil conservation, livestock forage production, or other crop uses. Exotic species, or weeds, can be a significant component of global environmental change because of their potential to alter primary productivity, decomposition, hydrology, nutrient cycling, and natural disturbance regimes. At smaller scales, they alter the structure, composition, and successional pathways of ecosystems. They lower diversity by out-competing native plants. Disturbance caused by forest restoration activities (thinning and prescribed fire) can promote weed spread, but ultimately will improve native plant diversity and productivity, improving ecosystem resistance to weed invasion. Restoration strategies need to include consideration of weed prevention and control and restoration of natives. Prevention includes restoring ecosystem processes; control includes biological, manual, mechanical, herbicidal, and prescribed burning methods; restoration involves returning native plants to a site. Monitoring is important to provide managers with information that will allow them to evaluate restoration activities and modify ineffective restoration approaches.
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Details
Title
The effect of invasive and noxious plants on land management in Eastern Oregon and Washington
Creators
Richy J. Harrod (Author)
Publication Details
Northwest science., Vol.75, pp.85-90
Academic Unit
Northwest Science
Publisher
WSU Press
Identifiers
99900502639601842
Copyright
In copyright ; openAccess ; http://rightsstatements.org/vocab/InC/1.0/ ; http://purl.org/eprint/accessRights/OpenAccess