1. Department of Biological Sciences, Macquarie University, North Ryde, NSW 2109, Australia;
2. Department of Physical Geography, Macquarie University, North Ryde, NSW 2109, Australia;
3. 61 Kent Road, North Ryde, NSW 2113, Australia;
4. Weyerhaeuser Company, 2730 Pacific Boulevard South‐east, Albany, OR 97322, USA;
5. Departamento Estudios Ambientales, Universidad Simon Bolivar, Apartado 89000, Caracas 1080, Venezuela