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National Invasive Species Information Center (NISIC)

The gateway to invasive species information; covering federal, state, local and international sources.
Invasive species are plants, animals, or pathogens that are non-native (or alien) to the ecosystem under consideration, and whose introduction causes or is likely to cause harm.

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Slideshow of Featured Species

  • Purple Star Thistle

    Crowds out desirable forage species on rangelands (Pitcairn et al. 2002)

  • European Grapevine Moth

    Feeds on grapevine flowers and berries (Zalom et al. 2011)

  • Clubbed Tunicate

    Competes with and displaces native species (Clarke and Therriault 2007)

  • St. Johnswort

    Crowds out native species and forage on pasturelands; toxic to livestock (Klein 2011; Zouhar 2004)

Featured News and Resources

News

Read the latest invasive species research news from ScienceDaily

What's New

See what's new on NISIC's Web site

Identify

Identify species that may be invasive

Calendar and Events

Find invasive species related conferences and events