This report discusses the history of conservation planning and how we got to where we are today with these regional scale, ecosystem level habitat conservation plans and other similar types of projects.

This report examines how effectively Pima County’s natural open-space acquisitions have addressed priorities for conserving species’ habitats and landscape features identified in the Sonoran Desert Conservation Plan. The scope of this study is beyond the County's Multi-Species Conservation Plan, which is a subset of the overall Sonoran Desert Conservation Plan.