Seafloor bathymetry and biodiversity of Elizabeth and Middleton Reefs, Lord Howe Marine Pa

High-resolution multibeam bathymetry and seafloor imagery data were collected for Elizabeth and Middleton Reefs in the Lord Howe Marine Park from January 31 to February 6, 2020. The survey was conducted by the Marine Biodiversity Hub using the vessel TV Bluefin and involved agencies including Geoscience Australia and the University of Tasmania. The aim was to map seabed habitats and associated fauna in the lagoon and mesophotic shelves of these southern-most platform reefs.

Use Cases

• Map seabed habitat structure and extent based on high-resolution multibeam bathymetry.
• Study the distribution of sessile and mobile marine fauna based on AUV and stereo-BRUV imagery.
• Analyze the co-occurrence of tropical, sub-tropical, and temperate species in a unique reef system.
• Model geomorphological features of platform reefs using sonar-derived bathymetric data.

Strengths

• Data was acquired using national standard survey tools and best practice sampling procedures.
• Collection involved a suite of methods including multibeam sonar, AUV imagery, sediment samples, and stereo-BRUVs.
• Survey targeted specific knowledge gaps in a defined geographic area (Recreational Use Zone and National Park Zone).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data freshness should be verified as the last metadata update is dated 2026-04-30.

Provenance

Source

Marine Biodiversity Hub (NESP), Geoscience Australia, IMOS, University of Tasmania, University of Sydney, NSW DPI, Parks Australia.

Collection Method

Multibeam sonar (Kongsberg EM 2040C HD), Autonomous Underwater Vehicles (AUV Sirius, AUV Nimbus), sediment sampling, stereo-baited remote underwater videos (stereo-BRUVs).

Time Range

2020-01-31 to 2020-02-06

Freshness

Data collected 2020-01-31 to 2020-02-06; metadata last updated 2026-04-30.

Geography

Elizabeth and Middleton Reefs, Lord Howe Marine Park, Australia.