Diana is a founding board member of Northern Jaguar Project. Retired as director of the Arizona State Museum’s Office of Ethnohistorical Research, she specializes in the history of land use and ecological change in the southwestern U.S. and northern Mexico.

Diana holds degrees in archaeology and history, and is the former operator of a family ranch. She has organized conferences on grassland restoration, Native American sacred sites, deforestation in the Sierra Madres, and restoration of the Santa Cruz River.

Diana has also served on the board of directors of Native Seeds/SEARCH, Audubon Research Ranch, Arizona-Sonora Desert Museum, Friends of Tucson’s Birthplace, and the Center for Desert Archaeology.