1. 1D.B. Warnell School of Forestry and Natural Resources, The University of Georgia, Athens, GA 30602, USA
2. 2D.B. Warnell School of Forestry and Natural Resources, The University of Georgia, Athens, GA 30602, USA
3. 3D.B. Warnell School of Forestry and Natural Resources, The University of Georgia, Athens, GA 30602, USA;, Email: akdavis@uga.edu
4. 4D.B. Warnell School of Forestry and Natural Resources, The University of Georgia, Athens, GA 30602, USA