By Andrea Diss Torrance, invasive insects program coordinator, andrea.disstorrance@wisconsin.gov, 608-516-2223
Many people know that invasive species are a concern in Wisconsin’s natural communities both on land and in water. But fewer people are aware that invasive species are not a new threat and that over time, we have developed strategies to reduce their spread and limit their damage to a tolerable level.
As soon as people from other continents started arriving in Wisconsin, so did the non-native plants, insects and microorganisms that came with them. Most of these non-native species are either beneficial or cause no harm, including well-known examples like honeybees, daffodils and even the bacteria used in cheese production. In contrast, the non-native species that damage native and domestic plants are known as invasive species, and over the years people have developed policies and practices to limit their impacts to native plant communities.
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