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Invasive Species Resources

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Washington Native Plant Society.
Adirondack Park Invasive Plant Program.
Pacific Biodiversity Institute (Washington).
Cornell University (New York). New York State Agricultural Experiment Station.
Colorado Parks and Wildlife.
Montana State University.
The Center for Invasive Species Management closed in 2015. Archives of relevant materials are available here.
University of Arkansas. Cooperative Extension Service.
The collection of digital images is provided as a service to Arkansas agriculture. These images represent symptoms of both pathological (infectious) and non-pathological (physiological/environmental) disorders of agronomic row crops and horticultural crops that grow in Arkansas. These photos are useful as an identification tool to growers of the crops listed.
Cornell University. Agriculture and Life Sciences.
This guide provides photographs and descriptions of biological control (or biocontrol) agents of insect, disease, and weed pests in North America. It is also a tutorial on the concept and practice of biological control and integrated pest management (IPM). Whether you are an educator, a commercial grower, a student, a researcher, a land manager, or an extension or regulatory agent, we hope you will find this information useful.
Montana State University Extension.
DOI. Bureau of Land Management.
Colorado Parks and Wildlife.
Motorboats and sailboats must have an ANS Stamp prior to launching in Colorado in 2019. Boat owners are required to purchase the ANS Stamp and operators must retain proof of purchase (electronic or printed receipt) on his or her person, the motorboat or sailboat, when operating the vessel (C.R.S. 33-10.5-104.5). ​Funding contributes to prevention and management of ANS in the state. Thank you for protecting our waters and contributing to conservation in Colorado!
DOI. NPS. Yellowstone National Park.
If you plan to use your own boat or angler float tube, you’ll need a permit and a free Yellowstone aquatic invasive species inspection. You can speed up the inspection process by arriving with a boat that is clean, drained, and dry. Watercraft that arrive dirty or with standing water will be subject to decontamination. Watercraft that cannot be properly decontaminated will be prohibited from launching.
Colorado State University. College of Agricultural Sciences.
Colorado Weed Management Association.
Lincoln County Noxious Weed Control Board (Washington).
See also: Weed I.D. and Options for Control for more species

Maine Department of Agriculture, Conservation, and Forestry. Maine Forest Service.

Montana Department of Natural Resources and Conservation. Forestry Division.