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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

  • Chrysanthemum White Rust

    Has become established throughout most of the world. If established in the U.S., chrysanthemum white rust could have significant impact on both greenhouse and outdoor chrysanthemum plants. (Hernández... more

  • Melaleuca

    Crowds out native species (Masterson 2007)

  • Russian Knapweed

    Crowds out native species and desirable forage; toxic to horses (Zouhar 2001)

  • Killer Shrimp

    In Europe, killer shrimp populations have caused significant ecological disruption by reducing biodiversity (NAS Database)

Featured News and Resources


Read the latest invasive species research news from ScienceDaily

What's New

See what's new on NISIC's Web site


Identify species that may be invasive

Calendar and Events

Find invasive species related conferences and events