Nonnative species often out-compete native forest plants and may degrade forest productivity, wildlife habitat, recreational values, and water quality. Humans spread invasive species by planting them in their gardens and yards and by seeds hitchhiking on their clothes, but they spread through natural means as well.

In an effort to inform forest managers, landowners, and others about where the most threatening invasive plants are in the South and to help them prepare for these threats, Miller collaborated with SRS Forest Inventory and Analysis (FIA) scientists to develop maps showing the spread, county-by-county, across the Southeast of more than 30 of the most serious nonnative plant species. The invasive plant data were collected on FIA plots throughout the southern United States in cooperation with State forestry agencies. In partnership with the University of Georgia?EUR??,,????'?????<

Maps posted at www.invasive.org/fiamaps/acres.cfm show the number of acres in a county covered by each nonnative species.