Modelling the effects of fertility control on koala-forest dynamics

Koala Phascolarctos cinereus populations sometimes exhibit eruptive dynamics, increasing to peak abundance and then crashing to low abundance. This dynamic is considered unacceptable because koalas die from starvation and food trees are killed by defoliation. There is concern that such dynamics may be occurring at a number of sites in south-eastern Australia. The only management option is fertility control of females.

We constructed a simulation model of koalas interacting with their food supply (manna gum Eucalyptus viminalis) in Mount Eccles National Park, Victoria, Australia. The amount of manna gum leaves consumed changed the survival and fecundity rates of koalas, and the amount of leaves removed changed the survival and transition rates of manna gums.

Author Charles R. Todd, David M. Forsyth, David Choquenot
Date 19/03/2008
Year 2008
Secondary title Journal of Applied Ecology
Volume 45
Number 2
Institution Arthur Rylah Institute for Environmental Research
Pages 568?578
Notes Notes
ISBN/ISSN doi:10.1111/j.1365-2664.2007.01434.x
Control method Fertility Control
Region VIC