1. Forestry Research Institute of Ghana; Council for Scientific and Industrial Research; University Post Office Box 63, KNUST Kumasi Ghana
2. Department of Forest and Conservation Sciences; Faculty of Forestry; University of British Columbia; 3621-2424 Main Mall Vancouver BC V6T 1Z4 Canada
3. Faculty of Renewable Natural Resources; Kwame Nkrumah University of Science and Technology; University Post Office; Kumasi Ghana
4. School of Natural Resources and Environmental Management; University of Energy and Natural Resources; P.O. Box 214 Sunyani Ghana