The Integrated Marine and Coastal Regionalisation of Australia (IMCRA) is a geospatial framework that categorises Australia’s marine and coastal environment into bioregions. IMCRA v4.0 includes a set of Provincial Bioregions, which represent broad benthic biogeographic patterns across Australia’s seas. These bioregions are based mainly on the biogeography of demersal, or bottom-dwelling, fish species, supplemented by geophysical classification. The dataset contains 41 provincial bioregions, comprising 24 provinces and 17 transitions, classified across tropical, subtropical, warm temperate and cold temperate climatic zones. Provinces are characterised by suites of endemic fish species, while transition zones capture areas where species ranges overlap between neighbouring provinces.

All IMCRA v4.0 Provincial Bioregions have now been added to the Marine Regions gazetteer. Further information on the dataset can be found here.

The IMCRA v4.0 Provincial Bioregions currently in the Marine Regions database can be found on the link below