From Australian Oceans Data Network
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Environmental factors associated with the spatial distribution of crustose coralline algae on the Great Barrier Reef

Created 23/06/2025

Updated 23/06/2025

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Between May 1996 and September 1999 the percentage cover of crustose coralline algae and environmental conditions were visually estimated on 144 reefs.On each reef, 2 sites (windward and leeward) were surveyed at up to 5 pre-defined depths (18-13, 13-8, 8-3, 3-1, reef flat), typically covering 200-300 m for each depth range.Percent total cover (0, 2.5, 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 70, 80, 90, 100%) of hard corals, octocorals, crustose coralline algae, turf algae, Sargassum and other macroalgae and unconsolidated substratum (sand/sediment/mud, and rubble).Visibility (Secchi distance in metres); sediment deposit thickness (0=none, 1=thin layer, 2=moderate layer, 3=thick deep layer); and slope angle (in 5° increments) were recorded.Relative distance across (from the coast), and along (to the northen end of the Great Barrier Reef), the shelf were calculated based on longitude and latitude. To describe the spatial distribution of crustose coralline algae over 144 reefs of the Great Barrier Reef.To investigate relationships between crustose coralline algae cover and water clarity, sedimentation, slope angle, and relative distance along and across the Great Barrier Reef.

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Additional Info

Field Value
Title Environmental factors associated with the spatial distribution of crustose coralline algae on the Great Barrier Reef
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/e7b26d6c-94f5-4f6d-8332-7b32f060cfe9
Contact Point
Australian Ocean Data Network
reception@aims.gov.au
Reference Period 20/11/2017
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        141.0,
        -24.0
      ],
      [
        153.0,
        -24.0
      ],
      [
        153.0,
        -10.0
      ],
      [
        141.0,
        -10.0
      ],
      [
        141.0,
        -24.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Environmental factors associated with the spatial distribution of crustose coralline algae on the Great Barrier Reef". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/environmental-factors-associated-with-the-spatial-distribution-of-crustose-coralline-algae-on-t1