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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. Learn what determines if a species is invasive.

Slideshow of Featured Species

  • Sea Lamprey

    Preys on native species (NAS Database)

  • Musk Thistle

    Crowds out native species and forage for livestock (Zouhar 2002)

  • Beach Vitex

    Crowds out native species and may destroy sea turtle nesting habitat (Cousins et al. 2010)

  • Eurasian Watermilfoil

    Crowds out native species (Smith and Barko 1990)

Featured

Climate Change

Learn how climate change impacts invasives species

What's New

Find the latest resources that have been added to NISIC's Web site

News

Read the latest invasive species research news from ScienceDaily

Calendar and Events

Find invasive species related conferences and events around the world