Filtering by
- All Subjects: Desert conservation
- All Subjects: Hayden, Carl Trumbull, 1877-1972
- Creators: Rosen, Philip C.
- Creators: Lane, Franklin K.
- Creators: Ebbin, Marc
Letter from Franklin K. Lane to Carl T. Hayden expressing his support for bill S.390 in establishing the Grand Canyon as a National Park.
Letter from Franklin K. Lane expressing his support for bill S.390 in establishing the Grand Canyon as a National Park. Circa 1913-1920.
Evaluates the conservation significance of county-owned properties in Avra Valley, specifically with regard to Priority Vulnerable Species and the Sonoran Desert Conservation Plan.
What has been developed in Orange and San Diego County, Calif. are blueprints for other urbanizing communities committed to striking a balance between growth and development and environmental quality and its notion of livability. These plans successfully put in place conservation measures unprecedented in their scope and breadth and yet do so without compromising the economic vitality of the region.
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.