1. Commonwealth Scientific and Industrial Research Organization, Atherton, Queensland 4883 Australia (JAL, KRB)
2. Pacific Northwest Research Station, Corvallis Forestry Sciences Lab, 3200 Southwest Jefferson Way, Corvallis, OR 97331 (SMW)
3. Natural Heritage New Mexico, Department of Biology, University of New Mexico, Albuquerque, NM 87131 (EHM, YC)