1. Department of Ecology and Natural Resource Management Norwegian University of Life Sciences P.O. Box 5003 NO‐1432 Ås Norway
2. Forest Research Centre Southern Cross University PO Box 157 Lismore NSW 2480 Australia
3. Forestry Corporation NSW Western Division PO Box 865 Dubbo NSW 2830 Australia
4. Forest Ecology and Forest Management Group Wageningen University & Research PO Box 47 6700 AA Wageningen The Netherlands
5. Departamento de Botánica Escola Politécnica Superior Universidade de Santiago de Compostela Campus de Lugo Lugo 27002 Spain
6. Marine Science Institute University of Texas at Austin Port Aransas TX 78373 USA
7. Instituto Boliviano de Investigación Forestal Km 9 carretera al norte Casilla 6204 Santa Cruz de la Sierra Bolivia