IMAS Metadata Catalogue
Habitat Map for Lizard Island reef, Australia derived from a photo-transect survey field data collected in December 2011 and September/October 2012
An object based image analysis approach (OBIA) was used to create a habitat map of Lizard Island reef, Queensland.
Georeferenced dive and snorkel photo-transect surveys were conducted at different locations surrounding Lizard Island. Dominant benthic or substrate cover type was assigned to each photo by placing 24 points random over each image. Each point was then assigned a dominant cover type using a benthic cover type classification scheme containing nine first-level categories - seagrass high (>=70%), seagrass moderate (40-70%), seagrass low (<= 30%), coral, reef matrix, algae, rubble, rock and sand.
The OBIA class assignment followed a hierarchical assignment based on membership rules with levels for "reef", "geomorphic zone" and "benthic community" (above).
This record contains a snapshot of the data taken for use in Seamap Australia (a national benthic habitat map; https://seamapaustralia.org). View the original record at: https://doi.pangaea.de/10.1594/PANGAEA.864209
Simple
Identification info
- Date (Publication)
- 2014-01-01
Principal investigator
Collaborator
Collaborator
Collaborator
Collaborator
Collaborator
- Status
- Completed
Point of contact
- Topic category
-
- Biota
Extent
))
Temporal extent
- Time period
- 2011-01-01 2012-12-31
- Maintenance and update frequency
- Not planned
Resource format
- Title
- ESRI Shapefile
- Date
- Edition
- -
- Global Change Master Directory (GCMD) Earth Science Keywords Version 8.0
- Keywords (Theme)
-
- Benthic physical habitat
- Benthic habitat
- AODN Instrument Vocabulary
Resource specific usage
- Specific usage
- Data supplied for use by the Seamap Australia Project.
Resource constraints
- Classification
- Unclassified
Resource constraints
- Linkage
-
http://i.creativecommons.org/l/by/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution 4.0 International License
- Website
-
http://creativecommons.org/licenses/by/4.0/
License Text
- Other constraints
- Cite data as: Roelfsema, Christiaan M; Saunders, Megan I; Canto, Robert Franklin C; Leon, Javier X; Phinn, Stuart R; Hamylton, Sarah (2014): Habitat Map for Lizard Island reef, Australia derived from a photo-transect survey field data collected in December 2011 and September/October 2012. PANGAEA, https://doi.org/10.1594/PANGAEA.864209
- Other constraints
- This dataset is hosted by the Institute for Marine and Antarctic Studies (IMAS), University of Tasmania, on behalf of The University of Queensland for the purposes of the Seamap Australia collaborative project (testing a national marine benthic habitat classification scheme).
- Language
- English
- Character encoding
- UTF8
- Supplemental Information
- Saunders, Megan I; Bayraktarov, Elisa; Roelfsema, Christiaan M; Leon, Javier X; Samper-Villarreal, Jimena; Phinn, Stuart R; Lovelock, Catherine E; Mumby, Peter John (2015): Spatial and temporal variability of seagrass at Lizard Island, Great Barrier Reef. Botanica Marina, 58(1), 35-49, https://doi.org/10.1515/bot-2014-0060
Content Information
- Content type
- Physical measurement
- Description
- Appended to original data for styling purposes for the Seamap Australia Project.
- Name
-
Benthic habitat
- Name
-
SM_HAB_CLS
Distribution Information
- Distribution format
-
-
ESRI Shapefile
-
ESRI Shapefile
- OnLine resource
-
SHAPE-ZIP
DATA ACCESS - This OGC WFS service returns the data (Lizard Island reef habitat) in Shapefile format.
- OnLine resource
-
seamap:SeamapAus_QLD_LizardIsland_2014
MAP - Lizard Island reef habitat map
- OnLine resource
-
Original metadata record [PANGAEA catalogue]
Resource lineage
- Statement
- Georeferenced dive and snorkel photo-transect surveys were conducted at different locations surrounding Lizard Island, Australia. For the surveys, a snorkeler or diver swam over the bottom at a depth of 1-2m in the lagoon, One Tree Beach and Research Station areas, and 7m depth in Watson's Bay, while taking photos of the benthos at a set height using a standard digital camera and towing a surface float GPS which was logging its track every five seconds. The camera lens provided a 1.0 m x 1.0 m footprint, at 0.5 m height above the benthos. Horizontal distance between photos was estimated by fin kicks, and corresponded to a surface distance of approximately 2.0 - 4.0 m. Approximation of coordinates of each benthic photo was done based on the photo timestamp and GPS coordinate time stamp, using GPS Photo Link Software (www.geospatialexperts.com). Coordinates of each photo were interpolated by finding the gps coordinates that were logged at a set time before and after the photo was captured. Dominant benthic or substrate cover type was assigned to each photo by placing 24 points random over each image using the Coral Point Count excel program (Kohler and Gill, 2006). Each point was then assigned a dominant cover type using a benthic cover type classification scheme containing nine first-level categories - seagrass high (>=70%), seagrass moderate (40-70%), seagrass low (<= 30%), coral, reef matrix, algae, rubble, rock and sand. Benthic cover composition summaries of each photo were generated automatically in CPCe. The resulting benthic cover data for each photo was linked to GPS coordinates and saved as an ArcMap point shapefile. The OBIA class assignment followed a hierarchical assignment based on membership rules with levels for "reef", "geomorphic zone" and "benthic community" (above).
- Hierarchy level
- Dataset
- Hierarchy level
- Dataset
Platform
Identifier
- Code
- diver
Instrument
Identifier
- Code
- underwater cameras
Metadata
- Metadata identifier
-
urn:uuid/72a77782-12e9-4f9c-8899-75b0c21ca16f
- Language
- English
- Character encoding
- UTF8
Point of contact
- Parent metadata
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/72a77782-12e9-4f9c-8899-75b0c21ca16f
Point of truth URL of this metadata record
- Date info (Creation)
- 2020-09-23T12:29:21
- Date info (Revision)
- 2023-09-19T13:25:21
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
Provided by
