The national and regional planning framework for the systematic development of a comprehensive, adequate and representative ‘CAR’ National Reserve System is provided by the Interim Biogeographic Regionalisation for Australia (IBRA). IBRA is endorsed by all levels of government as a key tool for identifying land for conservation under Australia's Strategy for the National Reserve System 2009-2030.
IBRA is updated as improved spatial mapping and information on
vegetation communities and ecosystems becomes available from state and
The latest version, IBRA7, classifies Australia's landscapes into 89 large geographically distinct bioregions (as shown on the map at right) based on common climate, geology, landform, native vegetation and species information. For example, the Australian Alps, the Nullabor Plain and the Wet Tropics are distinct bioregions. The 89 bioregions are further refined to form 419 subregions which are more localised and homogenous geomorphological units in each bioregion.
The Rangelands region contains 19 IBRA sub-regions. The links below will take you to the Australian Government's IBRA subregion publications, which provide descriptive and other information about each of the IBRA subregions in the Rangelands.