2000
About the document
This summary report outlines the process by which the 80 IBRA 4.2 bioregions were refined and updated into the 85 bioregions now found in IBRA Version 5.1. As part of this process a continental coverage of 354 IBRA subregions was also developed for data analysis in the National Land and Water Resource Landscape Health Assessment. At the request of some jurisdictions, this continental sub-region coverage at the time of publication is not publicly available, and thus not included in the IBRA 5.1 spatial data which is publicly available. This report thus only deals with the development of the new IBRA regions.