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Invasives Rule – NR 40 terminology

Prohibited

invasive species that are not currently found in Wisconsin, with the exception of small pioneer stands of terrestrial plants and aquatic species that are isolated to a specific watershed in the state or the Great Lakes, but which, if introduced into the state, are likely to survive and spread, potentially causing significant environmental or economic harm or harm to human health.

Restricted

invasive species that are already established in the state and cause or have the potential to cause significant environmental or economic harm or harm to human health and includes established nonnative fish and crayfish, fish in the aquaculture trade, fish in the aquarium trade, and non-viable fish species.

Caution

species that cannot be placed in other categories such as prohibited, restricted, or non-restricted because they are not currently found in the state, appear to be invasive only regionally, or their potential for invasiveness in Wisconsin is unknown. Not proposed to be regulated at this time.

Non-restricted

species that may have some beneficial uses as well as negative impacts on the environment but are already integrated into Wisconsin's ecosystems so that control or eradication is not practical or feasible. Not proposed to be regulated at this time.

Pending

species that we are not assessing for classification at this time, but plan to assess in future rule revisions. Not proposed to be regulated at this time.

SAG

Species Assessment Group

Council

Wisconsin Council on Invasive Species

Last revised: Monday February 27 2012