Antarctic Coastal Benthic Habitat Maps For Vulnerability Assessment

High-resolution seafloor geomorphology data from the Vestfold Hills coastal region of Antarctica provides a physical framework for understanding benthic habitats. The dataset combines multibeam sonar and satellite-derived bathymetry to map shallow areas, including those under sea ice, identifying habitats for macroalgae and invertebrate communities. Presented at the 2023 POLAR 2018 conference, this work by the Australian Ocean Data Network supports monitoring of ecosystem vulnerability to climate-driven regime shifts.

Use Cases

• Identify potential macroalgae habitat by analyzing seafloor geomorphology and bathymetry data in shallow, hard-substrate areas.
• Map invertebrate-dominated ecosystems vulnerable to sea ice loss by correlating extended sea ice cover with specific benthic community data.
• Model regime shifts from invertebrate to macroalgae communities using bathymetry and sea ice extent data to predict changes in light availability.
• Guide biological sampling studies by using high-resolution multibeam and satellite-derived bathymetry layers to target specific benthic habitats.

Strengths

• High-resolution multibeam data provides detailed seafloor geomorphology.
• Combines multibeam sonar with satellite-derived bathymetry to fill data gaps in shallow and ice-covered areas.
• Data supports identification of specific vulnerable ecosystems, as referenced in peer-reviewed literature (Clark et al. 2013).

Limitations

• Specific row counts, column details, and sample data are unavailable.
• The dataset's primary format is HTML/PDF, limiting direct machine-readability for analysis.
• Temporal coverage and update frequency for the underlying bathymetry data are not specified.

Provenance

Source

Australian Ocean Data Network

Collection Method

High-resolution multibeam sonar surveys combined with bathymetry derived from multispectral satellite imagery.

Time Range

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Freshness

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Geography

Shallow coastal waters of the Vestfold Hills region, Antarctica.