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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.

Welcome to our updated site! About our Web site redesign.

Slideshow of Featured Species

  • Grass Carp

    Direct and indirect impacts via: competition for food; significant changes in the composition of macrophyte, phytoplankton, and invertebrate communities; interference with the reproduction of other... more

  • Melaleuca

    Crowds out native species (Masterson 2007)

  • Asian Shore Crab

    Competes with native crustaceans and preys on other native species (NAS Database)

  • Burmese Python

    Preys on native species, some of which are endangered (such as the Key Largo woodrat, Neotoma floridana smalli); may also compete with threatened native species, such as the indigo snake (Drymarchon... more

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