Invasive Species

Business / Agriculture / Invasive Species: Alien (non-native) species of plants, animals, and pests whose introduction causes or is likely to cause economic or environmental harm or harm to human health. Executive Order 13112, issued February 8, 1999, seeks to prevent the introduction and minimize the impacts of invasive species through better federal agency coordination under a National Invasive Species Management Plan to be developed by an interagency Invasive Species Council. Examples of invasive species receiving recent attention include the Asian long-horned beetle, Africanized honeybees, zebra mussels, and the Formosan termite. APHIS carries out inspection and quarantine programs at U.S. ports of entry to prevent entry of invasive species. A number of laws are aimed at prevention and control, including among others the Plant Quarantine Act, the Animal Damage Control Act, the Federal Seed Act, the Federal Plant Pest Act, the Federal Noxious Weed Act, the Nonindigenous Aquatic Nuisance Prevention and Control Act, and the Alien Species Prevention and Enforcement Act.

Native Species

Science / Marine Biology / Native Species: A species that occurs naturally in an area (i.e. Is not introduced). Compare introduced species, invasive species. MORE

Introduced Species

Science / Marine Biology / Introduced Species: An organism that has been brought into an area, usually by humans, where it does not normally occur. Introduced species often compete with and cause problems for native species. Introduced species are MORE

Species Richness

Science / Biology / Species Richness: The number of species present in a community. MORE

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