The North-west Bioregional Profile identifies a number of ecological features that are of conservation value because of the role they play in the environment of the North-west Marine Region. Key ecological features (KEFs) meet one or more of the following criteria:
a species, group of species, or a community with a regionally important ecological role (e.g. a predator, prey that affects a large biomass or number of other marine species);
a species, group of species, or a community that is nationally or regionally important for biodiversity;
an area or habitat that is nationally or regionally important for:
a) enhanced or high productivity (such as predictable upwellings - an upwelling occurs when cold nutrient-rich waters from the bottom of the ocean rise to the surface);
b) aggregations of marine life (such as feeding, resting, breeding or nursery areas);
c) biodiversity and endemism (species which only occur in a specific area); or
a unique seafloor feature, with known or presumed ecological properties of regional significance.
KEFs have been identified by the Australian Government on the basis of advice from scientists about the ecological processes and characteristics of the area. A workshop held in Perth in September 2007 also contributed to this scientific advice and helped to underpin the identification of key ecological features.
Thirteen KEFs have been identified in the North-west Marine Region:
Ancient coastline at 125 m depth contour
Ashmore Reef and Cartier Island and surrounding Commonwealth waters
Canyons linking the Argo Abyssal Plain and Scott Plateau
Canyons linking the Cuvier Abyssal Plain and the Cape Range Peninsula
Carbonate bank and terrace system of the Sahul Shelf
Commonwealth waters adjacent to Ningaloo Reef
Continental Slope Demersal Fish Communities
Exmouth Plateau
Glomar Shoals
Mermaid Reed and Commonwealth waters surrounding the Rowley Shoals
Pinnacles of the Bonaparte Basin
Seringapatam Reef and Commonwealth waters in the Scott Reef Complex
Wallaby Saddle
In order to create a spatial representation of KEFs for the North-west Marine Region, some interpretation of the information was required. DoE has made every effort to use the best available spatial information, and best judgement on how to spatially represent the features based on the scientific advice provided. This does not preclude others from making their own interpretation of available information.