Deparment of Forestry223 Bessey HallIowa State UniversityAmes, IA 50011

Hannover, Germany

EcoRize, Breteniere, France

EcoRize, Breteniere, France

Mike IreyResearch Department P.O. Drawer 1207 Clewiston, Florida 33440-1207

University of FloridaGainesville, FL

University of FloridaGainesville, FL

Faculty of EducationKafr El. SheikhEgypt

Institute of EcologyUniversity of GeorgiaAthens, GA 30602-2202