The USGS develops strategies and techniques to understand and facilitate restoration of native species and habitats affected by invasive species. This is critical because control without restoration can leave the ecosystem vulnerable to subsequent reinvasion by the same or additional invasive species.
Bromus species – such as cheatgrass – are exotic annual grasses that have become the dominant annual grasses in the western hemisphere.
The integration of geophysical and enhanced Moderate Resolution Imaging Spectroradiometer Normalized Difference Vegetation Index data into a rule-based, piecewise regression-tree model to estimate cheatgrass beginning of spring growth
Top Photo: The leaf beetle is the first approved biological control agent for saltcedar. Photo courtesy of Bob Richard, U.S. Department of Agriculture.