Australian Marine Benthic Bioregionalisation and Seascape Maps

Geoscience Australia's 2005 Benthic Bioregionalisation divides Australia's Exclusive Economic Zone into 41 bioregions and 24 unique provinces. This dataset integrates seabed bathymetry, geomorphic features, fish diversity, and biophysical variables like primary production and sediment properties to characterize marine habitats. It was developed to support the design of representative marine protected areas under the EPBC Act.

Use Cases

• Analyze the spatial correlation between geomorphic features and the 41 defined bioregions for marine conservation planning.
• Model habitat suitability using integrated layers of seabed bathymetry, sediment properties, and temperature.
• Assess the representativeness of marine protected area networks against the 24 biologically unique provinces.
• Investigate relationships between biophysical variables like ocean primary production and fish diversity information.

Strengths

• Defines a structured spatial framework of 41 bioregions and 24 provinces for Australia's marine zone.
• Integrates multiple data layers including seabed bathymetry, geomorphology, and fish diversity.
• Created by Geoscience Australia, a national geoscience organization.

Limitations

• Core bioregionalisation is from 2005, potentially lacking contemporary biological observations.
• Relies on surrogate data like bathymetry due to absence of direct seabed biodiversity distribution information.
• Primary format is HTML, which may not provide direct access to raw geospatial data layers.

Provenance

Source

Geoscience Australia Data

Collection Method

Integration of existing seabed bathymetry data, fish diversity information, and other biophysical variables to produce geomorphic feature maps and seascape classifications.

Time Range

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Freshness

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Geography

Australia's Exclusive Economic Zone (EEZ) and continental margin.