Kangaroo Density Update 2009-2012

2013

Updated information to that provided in Rangelands 2008 - Taking the pulse 

About the report

Systematic surveys of kangaroo numbers continue across the NSW rangelands, much of western Queensland, the predominantly sheep-grazed pastoral tenure of SA and in the southern and western parts of the WA rangelands.

The latest survey data (2009-2012) show that:

  • The combined density of kangaroo species in WA (reds and western greys) remains much lower than the combined density of species in eastern states (including SA).
  • Kangaroo densities (reds plus greys) have increased in most Queensland and NSW rangeland bioregions in recent years but have not reached the densities present between 1993 and 2003.  (Densities are converted to dry sheep equivalents (DSE) as a standardised way of reporting the contribution of kangaroos to total grazing pressure.  Recent lower densities [in terms of DSE] are partly attributable to a lower factor [0.35] now used to convert kangaroo numbers.)  Kangaroo densities also increased in SA bioregions between 2009 and 2012 but not to the same extent as in Queensland and NSW.
  • More recent changes in the density of red and grey kangaroo species were less strongly related to prior seasonal quality than in years past.  Relative densities fluctuated in most bioregions but did not increase appreciably following recent years of generally above-average rainfall.
  • Euros / common wallaroos contribute appreciably to macropod density in some Queensland and South Australian rangeland bioregions.