Document ID: chunk:federal_register_of_legislation:F2018L00326:front:0:p100
Version: federal_register_of_legislation:F2018L00326
Segment Type: other
Provision Reference: 
Character Range: 288321–291621

types and ocean conditions. The South-west Network represents nine bioregions including all seven found in the region—Central Western Province, Southwest Shelf Transition, Southwest Transition, Southwest Shelf Province, Southern Province, Great Australian Bight Shelf Transition, Spencer Gulf Shelf Province—and the Central Western Transition and Central Western Shelf Province of the North-west Marine Region (Figure S3.1).
Depth ranges
The South-west Network represents the full range of depths found in the region, from shallow waters of less than 15 m to abyssal waters of more than 6000 m. Marine biological communities change with depth, and similar depth ranges in different bioregions support different groups of species. The range of ocean depths in each bioregion, represented as bathomes in Figure S3.2, have been included in the Network to ensure that examples of marine biodiversity are represented.
Seafloor features
The landscape-scale physical structure of the seafloor is important in determining where habitats or species occur. There is strong scientific evidence that different types of seafloor features provide different habitats and associated marine species and communities. The Network represents 15 of the 16 seafloor features found in the region—abyssal plain/deep ocean floor, bank/shoal, canyon, continental rise, deep/hole/valley, escarpment, knoll/abyssal hills/hills/mountain/peak, pinnacle, plateau, reef, ridge, saddle, shelf, slope, terrace, trench/trough—and includes a saddle of the North-west Marine Region (Figure S3.3).
Key ecological features
Key ecological features were identified through the marine bioregional planning program as areas or features that support distinct or important ecological communities at a regional scale. The South-west Network represents 14 key ecological features including all 13 key ecological features found in the region—Albany Canyons Group and adjacent shelf break, ancient coastline at the 90–120 m depth contour, areas important for small pelagic fish, benthic invertebrate communities of the eastern Great Australian Bight, Cape Mentelle upwelling, Commonwealth marine environment surrounding the Houtman Abrolhos Islands, Commonwealth marine environment surrounding the Recherche Archipelago, Commonwealth marine environment within and adjacent to Geographe Bay, Commonwealth marine environment within and adjacent to the west-coast inshore lagoons, Diamantina Fracture Zone, Kangaroo Island Pool, canyons and adjacent shelf break, and Eyre Peninsula upwellings, mesoscale eddies, Naturaliste Plateau, Perth Canyon and adjacent shelf break, and other west-coast canyons, western demersal slope and associated fish communities, western rock lobster—and the Wallaby Saddle of the North-west Marine Region (Figure S3.4).
Figure S3.1 Bioregions represented in the South-west Network
Figure S3.2 Bathomes indicating depth ranges represented in the South-west Network
Figure S3.3 Seafloor features represented in the South-west Network
Figure S3.4 Key ecological features represented in the South-west Network
Schedule 4 South-west Network marine parks and zone boundary descriptions
In this Schedule:
State waters has the same meaning as coastal waters of the State in subsection 3 (1) of the Coastal Waters (State Powers) Act