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Interim Biogeographic Regionalisation for Australia (IBRA) Version 5.1 (Subregions)

Created 20/09/2025

Updated 20/09/2025

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IBRA version 5.1 Sub-regions, like their parent regionalisation IBRA version 5.1, represent a landscape based approach to classifying the land surface of Australia from a range of continental data on environmental attributes, at a finer scale. 354 IBRA Sub-regions have been delineated, each reflecting a unifying set of major environmental influences which shape the occurrence of flora and fauna and their interaction with the physical environment.The IBRA Version 5.1 Sub-regions are the result of refinement of the IBRA Version 4 boundaries. These refined boundaries were jointly defined by the Commonwealth, State and Territory nature and conservation agencies. Following a DEH facilitated workshop on the revision of boundaries on 24 July 2000, spatial data refinements were undertaken by DEH in conjunction with relevant State / Territory agencies.Nominal attributes for the IBRA and IBRA Sub-regions are; climate, lithology/geology, landform, vegetation, flora and fauna, and landuse. The use of these attributes varies across the States.

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Additional Info

Field Value
Title Interim Biogeographic Regionalisation for Australia (IBRA) Version 5.1 (Subregions)
Language English
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/33dcc683-ef09-43dc-9d1d-5ed37e8a60d4
Remote Last Updated
Contact Point
DCCEEW's Find Environmental Data (FED)
geospatial@dcceew.gov.au
Reference Period
Geospatial Coverage Australia
Data Portal DCCEEW

Data Source

This dataset was originally found on DCCEEW "Interim Biogeographic Regionalisation for Australia (IBRA) Version 5.1 (Subregions)". Please visit the source to access the original metadata of the dataset:
https://fed.dcceew.gov.au/datasets/erin::interim-biogeographic-regionalisation-for-australia-ibra-version-5-1-subregions