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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

  • Karnal Bunt

    Fungal disease that infects wheat, reducing quality and yield (Bonde et al. 1997)

  • Chilli Thrips

    Attacks and causes significant damage to over 100 vegetable, ornamental, and fruit crops, particularly peppers, eggplant, and tomatoes (Nietschke et al. 2008)

  • Asian Longhorned Tick

    Potential vector of several human and animal diseases present in the United States ​(CDC 2018)

  • Eurasian Watermilfoil

    Crowds out native species (Smith and Barko 1990)

Featured

Climate Change

Learn how climate change impacts invasives species

What's New

See what's new on NISIC's Web site

News

Read the latest invasive species research news from ScienceDaily

Calendar and Events

Find invasive species related conferences and events