PNNL researchers have many years experience in the characterization and monitoring of arid landscapes. They conduct surveys and collect data to monitor the status and condition of biological resources. Research is conducted at all scales, from the individual plant/animal to landscape- level processes. This information is used to identify sensitive habitats and species, and assure compliance with legal and regulatory requirements. Products from this research include vegetation mapping, habitat suitability modeling for sensitive species, analysis of population trends for both plants and animals, and characterizing ecological risk.