Ariz.) Cooperative National Park Resources Studies Unit (Tucson

• Case study of research, monitoring, and management programs associated with the Saguaro Cactus (Carnegiea gigantea) at Saguaro National Monument, Arizona
• Invertebrates of Organ Pipe Cactus National Monument, Arizona
• Review of the Air Quality Biological Effects Research Program, Saguaro National Monument, Arizona
• Status of non-native plant species, Tonto National Monument, Arizona