SAGUARO Ecology of the Saguaro: II NPS Scientific Monograph No. 8

In our work during the past two decades we have become indebted to many persons who have contributed in important ways to the accomplishment of our investigations. To Paul Judge, former Superintendent of Saguaro National Monument, the senior author owes a special debt of personal gratitude for the encouragement and support that led to his initial undertaking of this work.

For their critical efforts in developing continued National Park Service support for these investigations since 1964, we are grateful to Park Planner "Davey" Jones and former Chief Scientists George Sprugel, Jr., and Robert M. Linn.

We are indebted to numerous other members of the National Park Service—the Washington office staff of the Office of the Chief Scientist, Regional Chief Scientist O. L. Wallis, and others of the National Park Service Western and Southwestern Regional Offices for personal encouragement and administrative support. We thank the Superintendents past and present of Saguaro National Monument and Organ Pipe Cactus National Monument, and the many members of their staffs who lent their support and contributed their labors to these investigations.

For field measurements on saguaro at Organ Pipe Cactus National Monument we are indebted to James Taylor, Jay Cable, and Wilton E. Hoy.

We thank Robert L. Burgess for permission to cite unpublished reports on his investigations at Tonto National Monument. For assistance in providing weather data, we are grateful to William D. Sellers, and to members of the staff of the Arizona-Sonora Desert Museum.

We thank Floyd G. Werner for identification of insects and E. Lendell Cockrum for assistance with small mammal identification. For assisting us in the field with saguaros and mammals, especially at the extremes of saguaro distribution in southwestern Sonora and northwestern Arizona, we are indebted to James L. Patton and his wife Carol. Many others have assisted us in the study of native animals that occur in communities with saguaro populations and we are indebted to them for their equally gracious help—W. Glen Bradley, E. Lendell Cockrum, Wallace G. Heath, Richard D. Krizman, Edward L. Lincoln, and Oscar H. Soule.

For other important observations and assistance with field investigations we are indebted to John K. Cross, James A. Doidge, C. Wayne Howard, Michael D. Robinson, Robert "Barry" Spicer, and Tien Wei Yang of the University of Arizona, and Kenneth K. Asplund, Robert L. Bezy, Eldon J. Braun, Richard S. Felger, Gerald O. Gates, Stephen R. Goldberg, E. Annette Halpern, David S. Hinds, Richard D. Krizman, Peter J. Lardner, John S. Phelps, Wade C. Sherbrooke, Oscar H. Soule, John L. Tremor, Thomas A. Wiewandt, and John W. Wright formerly of the University of Arizona.

We are grateful to John K. Cross, E. Annette Halpern, David S. Hinds, and Alan B. Humphrey for assistance with computer analysis of data.

To Harold T. Coss, we are indebted for the skilled photography of numerous difficult subjects.

We are particularly indebted to Lupe P. Hendrickson for her dedicated and capable assistance with the preparation of the manuscript.

For their careful review of the manuscript and valuable suggestions, we are grateful to Robert L. Burgess, Robert M. Linn, Otto T. Solbrig, Oscar H. Soule, and O. L. Wallis.

Tucson, Arizona
October 1974