This research project has been funded by the International Arid Lands Consortium.  Through a grant awarded to Dr. Kevin M. Fitzsimmons, Associate Research Scientist, from the University of Arizona, Environmental Research Lab.  This research has been designed and carried out by Dennis McIntosh, Graduate Research Associate.   If you have questions or would like more information, please contact Dennis McIntosh.  This research is available as a PDF file by clicking here.