The Changing Mile Revisited
An Ecological Study of Vegetation Change with Time in the Lower Mile of an Arid and Semiarid Region
Using nearly two hundred additional triplicate sets of unpublished photographs, The Changing Mile Revisited utilizes repeat photographs selected from almost three hundred stations located in southern Arizona, in the Pinacate region of Mexico, and along the coast of the Gulf of California. Coarse photogrammetric analysis of this enlarged photographic set shows the varied response of the region's major plant species to the forces of change. The images show vegetation across the entire region at sites ranging in elevation from sea level to a mile above sea level. Some sites are truly arid, while others are located above the desert in grassland and woodland. Common names are used for most plants and animals (with Latin equivalents in endnotes) to make the book more accessible to non-technical readers.
The original Changing Mile was based upon a unique set of data that allowed the authors to evaluate the extent and magnitude of vegetation change in a large geographic region. By extending the original landmark study, The Changing Mile Revisited will remain an indispensable reference for all concerned with the fragile desert environment.
"The photo-comparisons speak for themselves, and they whisper the question of 'why?' . . . Revisited will be a welcome addition to the coffee tables and bookshelves of Southwestern scientists. It is well worth the wait of four decades." —Journal of the Arizona-Nevada Academy of Science