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- All Subjects: Desert conservation
- All Subjects: Grand Canyon (Ariz.)
- Creators: Matthes, F.
- Creators: Regan, John J.
ContributorsFonseca, Julia (Author) / Regan, John J. (Author) / Pima County (Ariz.). County Administrator's Office (Publisher)
Created2001-10
Description
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.
ContributorsMatthes, F. (Author) / Evans, R. T. (Author) / The Military engineer (Publisher)
Created1926-05
DescriptionGeological Survey of the Grand Canyon in published journal. Vol. XVIII, No. 99.