Many invasive exotics are adapted for long distance dispersal. Thus, management of exotics must be at the landscape scale. Many parks located within the Central Region have identified noxious weeds as a serious threat to park resources. Theodore Roosevelt has an active leafy spurge control program with cooperation from adjacent land owners. A project has been initiated to inventory and rank exotic plants for Theodore Roosevelt and Knife River in North Dakota and Wind Cave and Badlands in South Dakota.
Additional support is needed to complete regional planning.
Finally, the state of Colorado has volunteered to represent the western states in a noxious weed control program. Opportunities for cooperative efforts exist. In areas like Yellowstone, large wildlife including buffalo, elk, and wolves roam in and out of park boundaries. Hunting is allowed on adjacent lands and some wildlife is viewed as an economic threat to landowners. At Voyaguers National Park, wolves cross the border into Canada where they are legally trapped or shot.