In order to communicate effectively about land use in Pima County, we must understand that different individuals and groups of people have assigned meaning to places and landscapes in Pima County in accordance with their experiences and their mode of communication. Ten different cultures and their landscapes are described, providing a fascinating summary of the history of each group in the area.

If one species had to be chosen to preserve and restore, perhaps it should be cottonwood. Cottonwood-willow forests, where they exist and are healthy, indicated the presence of a viable riparian area, which is in turn the key to conserving great proportions of our native species. A reflection of the dire status of our riparian systems is that the Sonoran cottonwood-willow and Sonoran mesquite-cottonwood forests.