CWMA 1st Annual 4-County CWMA Pull Together Demonstration Site Information | The impacts of invasive weeds and the importance of their management are becoming apparent to a wide variety of organizations. After habitat loss, invasive species have been recognized as the second largest danger to threatened and endangered species (Precious Heritage: The status of biodiversity in the United States, TNC). According to a study commissioned by the Oregon Department of Agriculture, 21 state-listed noxious weeds alone cause economic losses to Oregon of over $83 million per year (Oregon Noxious Weed Strategic Plan, ODA, 2001). Throughout the four county region, there are a multitude of economic impacts which arise as a result of exotic plant infestations. Some of the most prevalent and intrusive impacts include: loss of revenue in nursery, farming and timber industries, increased roadside and power line maintenance costs, and an increased cost in maintenance of drainage ditches. Ecological impacts are also widespread and include degradation of water quality, loss of fish and wildlife habitat and loss of rare and typical native plants in natural areas and open spaces.
Participating Organization Links: Bureau of Land Management, Salem District Cascade Pacific Resource Conservation and Development City of Portland Parks and Recreation Clackamas Soil and Water Conservation District East Multnomah Soil and Water Conservation District Johnson Creek Watershed Council Northwest Oregon Resource Conservation and Development Oregon Department of Agriculture Oregon Department of Parks and Recreation Oregon Department of Transportation Portland Bureau of Environmental Services Tualatin Hills Park and Recreation District Tualatin River Watershed Council Tualatin Soil and Water Conservation District West Multnomah Soil and Water Conservation District
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