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- All Subjects: Sonoran Desert--Ecology
- All Subjects: Water-supply
- Resource Type: Text
Identifies key potential threats and stressors to vulnerable species in Pima County, and to the biological and hydrological resources that support these species. Emphasis has been placed on identifying the specific components of past, existing, and proposed land and water uses that pose the greatest potential threats over the next 30 years to focal species and special habitats, plant associations, and communities.
Two studies that describe the progress of riparian mapping that is being developed as part of the Sonoran Desert Conservation Plan.
Mr. Proudfoot, the leading pygmy-owl biologist in the United States, has worked for the last two years to gather and analyze the data that allows us to address issues regarding the genetic viability of ferruginous pygmy-owls in Arizona and to establish a framework for future management efforts. The two major questions addressed are (1) do populations of concern lack genetic variation relative to putative healthy populations, and (2) how unique are geographically distinct populations within a species of special concern?
A preliminary analysis that has been drafted in conjunction with participating federal agencies. Land managing entities provided information and later a detailed review of fact sheets that summarize each reserve in terms of its size, ownership, authorizing documents, land use activities, priority vulnerable species, exotic and non-native species, baseline information, GAP status, acquisitions, management plans, research, monitoring and recovery programs. The study proposes eight Reserve Management Areas that include land managers who could work together across administrative boundaries.
Includes the information needed to draft the Water Resources Element and also describes the options that Pima County has to deal with water supply issues in light of the need to protect riparian and wetland areas under the SDCP.
Includes the Pima County staff response to Tucson Water Comments (May 16, 2001) and An Evaluation of Hydrologic and Riparian Resources in Saguaro National Park (March 2001). Groundwater withdrawals pose a threat to middle basin riparian areas.
The purpose of this report is to summarize information relevant to water aspects of the SDCP and the Pima County Comprehensive Plan. It deals with water supply and human water demand, and water supplies and needs for riparian and wetland habitat.
A great deal of additional information is now available regarding the area designated as containing biological resources as indicated on the "purple map" attached to the March 19, 2001 report. The Science Technical Advisory Team has worked on differentiating the resources within this area and assigning biological resource values to refine the SDCP and allow informed judgements regarding future uses of lands within the areas of biological sensitivity.
Describes some of the highlights of the approach by the Science Technical Advisory Team during the study of the last three years and brings emphasis to a few of the simple guiding principles that might not have been noted during the last years of research and reporting.
Documents the representation of aspects of biodiversity within both the existing system of protected land and the biologically preferred alternative of the SDCP. It is necessary to think not only in terms of species, but also in terms of vegetation communities. Aspects of both were incorporated into the design of the SDCP. This study provides a detailed look at the twenty-one special element conservation targets that were considered by the Science Technical Advisory Team for the Plan.