The Koala Coast located in the South Eastern Queensland region cover an area of 375 square kilometres.  In the Koala Population Report 2010 (Department of Environment and Resource Management, 2012), it was noted that the population of 6000 animals between 1996 to 1999 had declined by 26 per cent to an estimated 4,600 animals.  This online model highlights the factors affecting this decline.

http://www.ehp.qld.gov.au/wildlife/koalas/research/pdf/koala-coast-report2010.pdf