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.

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

• Center for Research on Invasive Species and Small Populations 

• Ecoregions by National Forest (19 KB) 

• Nature Serve Risk Assessment

• Preparing for Invasive species Outbreaks - A Workbook for State Foresters (449 KB) 

• Region 4 Invasive Species Management Strategy (307 KB)

• Risk Assessments Based on Priority Landscapes, Ecoregions, and Noxious Weed Species (examples) (115 KB) 

• Risk Assessment Based on Invasive Species Taxa Groups (example) (45 KB)