This may be the most important report to date on the subject. And see the embedded link for the 19 slides from the subject report.
Dr. Stephen R. Humphrey, Director of Academic Programs,
School of Natural Resources and Environment,
Box 116455, 103 Black Hall, University of Florida
Gainesville, FL 32611-6455 USA
Tel. 352-392-9230, Fax 352-392-9748