1. Dep. of Resource Management and Geography School of Land and Environment, The Univ. of Melbourne Parkville VIC Australia
2. Dep. of Primary Industries 110 Natimuk Rd. Horsham VIC Australia
3. Dep. of Crop Systems, Forestry and Environmental Sciences Univ. of Basilicata Via Ateneo Lucano 10 Potenza 85100 Italy
4. Institute for Sustainable Resources Queensland Univ. of Technology D Level 3, Gardens Point Queensland 4001 Australia
5. Kellogg Biological Station Michigan State Univ. Hickory Corners MI