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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.

Slideshow of Featured Species

  • Quagga Mussel

    Alters food web by filtering water and removing plankton; clogs water-intake pipes (NAS Database)

  • Japanese Stiltgrass

    Can grow in a variety of habitats where it forms dense stands and crowds out native species (Fryer 2011)

  • 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

  • Wild Boar

    Damages native plants and crops and competes with native species (Rouhe and Sytsma 2007)

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