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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

  • Formosan Subterranean Termite

    Damages landscape trees and causes significant structural damage to buildings (Lax and Osbrink 2003)

  • Alligatorweed

    Forms dense mats that crowd out native species and impede recreational activities such as boating, swimming, and fishing (Texas Invasives 2007)

  • White Pine Blister Rust

    Fungal disease of five-needle (white) pines (Maloy 2001)

  • Cactus Moth

    Feeds on prickly pear cacti (species in the genus Opuntia) (Johnson and Stiling 1998)

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