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2004 Update on the environmental and economic costs associated with alien-invasive species in the United States
Invading alien species in the United States cause major environmental damages and losses adding up to almost $120 billion per year. There are approximately 50,000 foreign species and the number is increasing. About 42% of the species on the Threatened or Endangered species lists are at risk primarily because of alien-invasive species.
The Chief of the USDA Forest Service has identified invasive species as one of the four critical threats to our Nation’s ecosystems.
Welcome to InvasiveSpecies.gov!The National Invasive Species Council (NISC) was established by Executive Order (EO) 13112 to ensure that Federal programs and activities to prevent and control invasive species are coordinated, effective and efficient. NISC members are the Secretaries and Administrators of 13 federal departments and agencies to provide high-level coordination on invasive species and is co-chaired by the Secretaries of Commerce, Agriculture, and the Interior (see NISC Organizational Chart). EO 13112 defines invasive species as "…an alien (or non-native) species whose introduction does, or is likely to cause economic or environmental harm or harm to human health". Only a small proportion of non-native species are invasive (See ISAC Definitions White Paper.)