Interim Biogeographic Regionalisation for Australia, Biogeographic classification system in Queensland, Australia.
The Interim Biogeographic Regionalisation for Australia is a classification system that divides the Australian continent into 89 bioregions and 419 subregions. It describes natural landscapes based on climate, soil, geology, and vegetation patterns.
The system was developed in 1995 by the Department of Sustainability, Environment, Water, Population, and Communities to enable systematic environmental planning. A seventh version was later updated to better account for oceanic regions and island territories.
IBRA classifications influence research methods and field studies conducted by Australian scientists examining regional biodiversity patterns.
Government agencies use the classification to make decisions about land management, conservation priorities, and resource allocation. The data also support research projects and environmental assessments across different regions.
The system includes four oceanic bioregions that cover Australian island territories such as Christmas Island and the Coral Sea region. These islands are often overlooked but are important for capturing the full extent of Australian biodiversity.
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