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- All Subjects: Riparian restoration
- All Subjects: Desert ironwood
- All Subjects: Pima County (Ariz.)--Antiquities
- All Subjects: Rivers
- Creators: Pima County (Ariz.). County Administrator's Office
Invasions by non-native species cause serious problems in many parts of Pima County. It will benefit from adopting policies and increasing coordination with government and non-profit groups to deal effectively with invasive species.
A restoration effort of the San Pedro River to restore sacaton grassland, riparian trees and mesquite to about half the 50 acres of fallow agricultural fields at the Bingham Cienega. The overriding goals were to (1) establish a diversity of riparian habitats in the fields which in turn will support a greater number of invertebrate, reptile, mammal and bird species; and (2) develop practical techniques for promoting establishment of native plants that require little or no irrigation.
Provides a snapshot of past and current conditions, and represents the very best of collaborative efforts between the expert community and County staff. This study was made possible by a gift from Dr. Wendell Minckley of a database that provided information about all known surveys of native fish within Pima County, including the species, river basin, drainage, date, number of specimens collected, collector, museum catalogue number, citations, locality, and any comments made.
Arizona's fish story begins in 1904 with the publication of Morton Chambrlain's "Survey of Arizona Fishes", the first detailed study by an aquatic biologist of the area. He was able to count sixteen native species in Arizona. Today more than half are either extinct or listed as threatened or endangered, and most of the rest are considered to be imperiled. In Pima County, we count more extirpated native fish than remaining residents. The story, absent a fairly dramatic change in circumstances, will end with the extirpation or extinction of all native fish in the region. This report provides an opportunity to change the circumstances of aquatic and riparian systems in eastern Pima County.
Describes a comprehensive regional policy direction to achieve meaningful riparian restoration necessary for endangered species compliance and the basic relation of water policy to conservation planning.
Priority cultural resources are places of such importance to the history and culture of Pima County that their protection is warranted in the public interest. Out of more than 3,500 known archaeological sites and 4,000 historic buildings, 229 priority cultural resources were identified.
Describes how information was collected for use in preparing the cultural and historical resources element. The SDCP is a regional planning effort that is designed to balance future growth in Pima County with environmental protection. Pima County compiled and analyzed information on three basic resource types known to occur within the County's jurisdiction: archaeological sites, historical resources, and traditional cultural places.
Provides a brief discussion of the need for the federal government to afford special protection for the Ironwood forest found in the Ragged Top and Silverbell Mountains. A proposed Ironwood Preserve would conserve one of the most valuable stands of the ancient Ironwood forest within the Sonoran Desert ecoregion.
Takes a comprehensive view of ironwood habitats in both the United States and Mexico, evaluating the ecological and cultural resources supported by the ancient ironwood tree. The study provides an overview of the history and ecology of desert ironwood, and a discussion of the binational research effort undertaken to produce the report.
Brings together and updates prior anlayses of the riparian restoration element of the SDCP to include not only the considerations of the Endangered Species Act, but also the Clean Water Act. The report defines the scope of environmental and legal issues, and describes a method for further integrating efforts to address environmental and regulatory issues.