Invasive Species


Graphic of the states in Region 1 and 4    

Northern Region 1 and
Intermountain Region 4

An invasive species is defined as a plant, animal, or microbe, including its seeds, eggs, spores or other biological material that is non-native to the ecosystem under consideration and whose introduction causes, or is likely to cause economic harm, environmental harm or harm to human health.


Click on the images to learn more about the different focus areas of invasive species.

Photos of the different focus areas for invasive species. Upper left: invasive aquatic invertebrate - Zebra mussels;  upper right: invasive pathogen - White pine blister rust; center: invasive plant Leafy spurge with bio-control agents, Red-headed stem borer; lower left: invasive terrestrial invertebrate - Asian long-horned beetle; lower right: invasive aquatic vertebrate - Brook trout

Aquatic VertebratesLink to Aquatic Invertebrates.Link to Invasive Pathogens.Link to Terrestrial InvertebratesLink to Invasive Plants