Concern has been expressed that mesquite bosques are disappearing or diminishing in quality, and that the survival of the mesquite mouse is consequently threatened. This study, funded by a grant from the Arizona Heritage Fund to the Pima County Regional Flood Control District, investigated the current distribution of the mesquite mouse by reviewing historical records from museum specimens, examining existing potential habitat at historic locations of the species and elsewhere in the county, and conducting a live-trapping study at 19 sites representing a range of ecological communities with mesquite as a major component.

A series of 51 individual “stakeholder” interviews and two focus groups conducted with members of the Pima County business community in fall, 2001, documented significantly divided opinion about the likely economic impacts of the county’s Sonoran Desert Conservation Plan (SDCP). The results of the stakeholder inquiries were striking. Only one major finding reflected consensus, while several others revealed sharp differences of opinion in the business community about the potential economic impacts of the SDCP and associated initiatives.