Global Seascape Classification for High Seas Marine Protection

A global, multivariate statistical classification of the ocean floor into 11 distinct seascape categories, comprised of 53,713 separate polygons. The dataset was created using six biophysical variables—depth, seabed slope, sediment thickness, primary production, bottom water dissolved oxygen, and bottom temperature—to support the objective design of high seas Marine Protected Areas (MPAs). It enables GIS analysis to identify heterogeneity hotspots as candidate MPA sites, removing subjectivity from the conservation planning process.

Use Cases

• Identifying candidate sites for high seas Marine Protected Areas based on seascape and geomorphic heterogeneity maps.
• Classifying benthic bioregions using multivariate statistical analysis of six key biophysical variables.
• Validating ocean floor subdivisions by comparing derived seascapes with existing seafloor geomorphology maps.

Strengths

• Contains 53,713 separate polygons providing detailed spatial coverage.
• Classification is based on six distinct biophysical variables, offering a multivariate perspective.
• Validation was performed against existing geomorphology maps and through GIS analysis of polygon metrics.

Limitations

• Critical metadata such as column names, row count, license, and author are missing from all platform entries.
• The dataset's creation date and the temporal coverage of the underlying biophysical data are not specified.
• Relies on inferred biological associations from biophysical variables due to a stated lack of sufficient direct biological data.

Provenance

Source

Australian Ocean Data Network

Collection Method

Derived via a multivariate statistical method applied to six global biophysical variables.

Freshness

Last updated 2026-06-17 according to the most recent platform entry.

Geography

Global ocean floor, with specific mention of the AU-EEZ (Australian Exclusive Economic Zone).