High koala mortality associated with low browse moisture in tropical environments

Irene Delma Clifton

School of Medical and Applied Science, Central Queensland University, PO Box 5606, Mackay MC, Qld 4741, Australia. Email:


At St Bees Island, central Queensland, during drought conditions from July 2001 to April 2003, 85% of koala deaths occurred when browse moisture fell below 51% fresh weight. Drought-induced mortality (and changing frequencies or intensities of drought due to climate change) may have a considerable effect upon this population.