Plant, animal, or microbe species that is non-native (or alien) to the ecosystem under consideration and whose introduction causes or is likely to cause economic or environmental harm, or harm to human health.
Pacific Basin Information Node provides access to studies of biological resources associated with the Pacific Basin including tropical and subtropical islands and the surrounding marine environment.
Brief overview of the proliferation of zebra mussels and the role of phosphorus in Lake Erie with links to publications related to Lake Erie water quality.
Life history and identification of Salvinia species, a floating, rootless tree fern and a noxious aquatic weed. Site includes posters, instructions on submitting sightings, how to subscribe to a listserv on the weed, and a bibliography.
Gateway to southern Appalachian biological information with links to virtual area tours, species, data and models, partners, air and water quality, maps, invasive species, wild boar control, species identification, and news items.
Links to research at the field stations of the Western Ecological Research Center with direct links to web pages for wildlife videos, satellite telemetry, fire ecology, invasive species, herpetology field guide, and coastal ecosystems.
U.S. Department of the Interior |
U.S. Geological Survey