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John Klavitter, National Wildlife Refuge System national invasive species invasive species
An invasive species is any plant or animal that has spread or been introduced into a new area where they are, or could, cause harm to the environment, economy, or human, animal, or plant health. Their unwelcome presence can destroy ecosystems and cost millions of dollars.

Learn more about invasive species
coordinator,, 703-358-2063

Craig Martin, U.S. Fish and Wildlife Service national aquatic invasive species branch chief,, 703-358-1932

Cindy Hall, U.S. Fish and Wildlife Service national integrated pest management coordinator,, 703-358-1831

Karen Anderson, U.S. Fish and Wildlife Service ecological services national invasive species coordinator,, 703-358-2301