An official website of the United States government

The .gov means it’s official.
Federal government websites always use a .gov or .mil domain. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar.

This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. The https:// means all transmitted data is encrypted  — in other words, any information or browsing history that you provide is transmitted securely.

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

  • New Zealand Mud Snail

    Unknown; may displace and compete with native invertebrates (NAS Database)

  • Purple Loosestrife

    Crowds out native species (Munger 2002)

  • Japanese Spiraea

    Capable of spreading rapidly and competing with native species (Feldhaus et al. 2013)

  • Southern Bacterial Wilt

    Disease of geraniums and solanaceous crops (potatoes are particularly susceptible to this race of the disease) (Champoiseau et al. 2010)

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