Invasive species are non-native plants, animals and other living organisms that thrive in areas where they don’t naturally live and cause (or are likely to cause) economic or environmental harm, or harm to human, animal or plant health. Invasive species degrade, change or displace native habitats, compete with native wildlife, and are major threats to biodiversity.
What We Do
Invasive species cause tremendous harm to our environment, economy and health. Wheneat or crowd out native species, they reduce the vital biological variety we call biodiversity. Ecosystems with low biodiversity are more vulnerable to disease and other environmental stresses. At worst, invasive species can lead to the extinction of native species. Invasive species also can spread disease and inflict costly damage on infrastructure, such as roads, canals and levees.
In ways large and small, the U.S. Fish and Wildlife Service works to prevent, eradicate and control invasive species, using environmentally sensitive approaches.