Ryan R. J. McAllister, John E. Gross, Chris J. Stokes 1 CSIRO Sustainable Ecosystems, Davies Laboratory, PMB PO Aitkenvale 4814 Australia. 2 National Park Service, 1201 Oakridge Dr., Ft Collins, Colorado 80525 USA. a Corresponding Author: CSIRO Sustainable Ecosystems, Davies Laboratory, Private Mail Bag PO Aitkenvale 4814 Australia Tel: +61-7-4753-8613 Fax: +61-74753-8600 [email protected]
