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    This dataset consists of polygons delineating the broad-scale regional marine habitats of selected areas in Western Australia, mostly in existing and proposed marine conservation reserve areas. Habitat mapping was carried out by various organisations, including DPAW, using a range of methodologies over many years. Diverse classifications and habitat descriptions were standardised to the DPaW broad-scale Shallow-water Marine Habitat Classification scheme (SMHC) (Bancroft, 2003) after initial habitat mapping and classification work had been done. Habitat polygons are classified to the broad-scale ecological Community level and where more detailed data exist, local-scale Functional Group level (Bancroft, 2003). Polygons were attributed with habitat class names only, textual descriptions of these classes are provided in this metadata statement and further in Bancroft (2003).

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    The data set provides outlines for the maximum extent of geomorphic units for the North West Marine Region. The dataset is clipped from Geoscience Australia’s original Geomorphic Features of Australia’s Exclusive Economic Zone (EEZ) to the East Marine Region extent. These data were compiled as part of Geoscience Australia’s integrated digital information system to provide improved accessibility and knowledge relating to the environmental management of Australian’s oceans resources. The geomorphic units are to be used as surrogates for benthic habitats and can be best applied to the construction of bioregionalisations of the seabed. The data set also includes the name of units in the attribute table, where known, the source(s) of the names, feature codes, province codes, as well as the area and perimeter of each unit. The data are accompanied by Geoscience Australia Record 2003/30. Dataset has been updated (2006) to correct errors in original file.