Filtering by
- All Subjects: Desert conservation
- All Subjects: Sonoran Desert--Ecology
- All Subjects: Frogs
- All Subjects: Hayden, Carl Trumbull, 1877-1972
- Creators: Rosen, Philip C.
- Creators: Mathes, François E.
- Resource Type: Text
Evaluates the conservation significance of county-owned properties in Avra Valley, specifically with regard to Priority Vulnerable Species and the Sonoran Desert Conservation Plan.
Letter from François E. Mathes to Carl T. Hayden about maps of the Grand Canyon.
Because the West Branch area has been left alone, it has a chance to recover and become a part of the larger Paseo de las Iglesias project, and a cornerstone of a more extensive effort at ecological restoration involving the mesic coorridors of Pima County, the Santa Cruz, Rillito, and Pantano.
This study by DR. Philip Rosen stands as one of the most impressive, given the scope of the author's knowledge, and it is one of the most ingenious, given the proposed concepts for restoration and protection of native fish and frogs within the urban Tucson Basin.