Non-Native Invasive Species

Non-native invasive species (NNIS) are plants, animals, insects or other organisms whose introduction to an area does or is likely to cause economic or environmental harm or harm to human health.   Other names for NNIS include exotic species, noxious weeds, pests, etc.    A few examples of NNIS that occur in Minnesota include purple loosestrife, gypsy moth, Eurasian waterfmilfoil, earthworms, rusty crayfish, and common buckthorn.

Unlike much of the U.S., the Arrowhead Region and the Superior National Forest are fortunate because many of the species that are a problem in the upper Midwest are not well established here yet. However, NNIS can quickly spread once introduced into the environment. NNIS can spread on the air, in the water, and on articles like campers, firewood, boats, vehicles, even the mud on your boots.

Because non-native invasive species do not respect property lines, we are working with other agencies, non-governmental organizations, and citizens like you to increase awareness of this resource management issue and take action to stop the spread of NNIS in our area. Presentation (open and click to advance through slides)

Cook County Invasives Team

NNIS Management on the Superior National Forest

If you would like to learn more, here are some useful links:

NNIS in Minnesota

NNIS in the U.S.

Booklet: Non-Native Invasive Species of the Superior National Forest

NNIS Identification booklet

(Downloadable Booklet)