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- What are Invasive Species?
- Species Profiles
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- What You Can Do
- About Us
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.
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Slideshow of Featured Species
Forms dense thickets that displace native species (Cuda et al.)
Destructive pest of cereal grains and oilseeds (CABI)
Can grow in a variety of habitats where it forms dense stands and crowds out native species (Fryer 2011)
Crowds out native species and cultivated crops (Klein 2011)
Featured News and Resources
Read the latest invasive species research news from ScienceDaily
See what's new on NISIC's Web site
Identify species that may be invasive
Calendar and Events
Find invasive species related conferences and events