TemperateReefBase Geonetwork Catalogue
SeaMap Tasmania towed video transects 2000-2009
The SeaMap Tasmania project undertook mapping of seafloor habitats across the nearshore Tasmanian coastline (0-40 m) - the first state to compile a statewide asssimilated benthic habitat dataset.
This initiative comprised of collating aerial photography (from archives), acoustic mapping, and conducting underwater video surveys and field-based visual observations. From this, 1:25,0000 scale habitat maps were created for shallow coastal water to within 1.5 km of the coastline (or 40 m depth, which ever was arrived at first).
This record provided access to the raw video and associated annotations from video transects, which were subsequently used as validation (ground-truthing) for habitat mapping.
A submersible digital video camera was deployed at selected locations around the Tasmanian coastline. These samples were used to verify the aerial photography and echo sounder substrate classification and obtain more detailed information on biological assemblages. Transects were undertaken from the LWM (Low water mark) to 80 metres in depth or 1.5 kms from shore. Positional information was recorded for each video drop as a series of DGPS coordinates and also as a direct overlay of the DGPS output (position, date and time) onto the video.
Simple
Identification info
- Date (Creation)
- 2025-08-12
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
- Status
- Completed
Principal investigator
- Topic category
-
- Environment
- Biota
- Oceans
Extent
Temporal extent
- Time period
- 2000-06-13 2009-06-17
Vertical element
- Minimum value
- 0
- Maximum value
- 40
- Identifier
- EPSG::5715
- Name
- MSL depth
- Maintenance and update frequency
- Not planned
- Global Change Master Directory (GCMD) Earth Science Keywords Version 8.0
- Keywords (Discipline)
-
- Temperate Reef
- Keywords (Theme)
-
- Towed video
- Benthic classification
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: Lucieer VL (2009). SeaMap Tasmania towed video transects. Tasmanian Aquaculture and Fisheries Institute. Data accessed at http://metadata.imas.utas.edu.au/geonetwork/srv/eng/metadata.show?uuid=24d48803-5dae-4425-b776-612c4ac2080a on (access date).
- Other constraints
- The data described in this record are the intellectual property of the the Tasmanian Aquaculture and Fisheries Institute (TAFI).
- Language
- English
- Character encoding
- UTF8
Distribution Information
OnLine resource
- Protocol
- OGC:WFS-1.0.0-http-get-feature--shapefile
- Name of the resource
- SHAPE-ZIP
- Description
- DATA ACCESS - This OGC WFS service returns the data (SeaMap Tasmania towed video transects) in Shapefile format.
- OnLine resource
-
imas:SeamapTAS_video_transects
MAP - SeaMap Tasmania towed video transects
- OnLine resource
- PUBLICATION - Mapping the gaps [PDF]
- OnLine resource
- View data in the interactive Seamap Australia data portal.
Resource lineage
- Statement
- Select videos were analysed for dominant flora and fauna for each habitat type, with the total percentage covers of all algal and seagrass species recorded over five second blocks of video. Dominant species were identified to the lowest taxonomic level possible. Percentage cover was recorded in accordance with a 0-4 number scoring system where 0 = no algae, 1 = 0 – 25% cover, 2 = 25 – 50 % cover, 3 = 50 –75 % cover, 4 = 75 – 100 % cover. The dominant algal communities for each habitat type were examined for each of the reporting sections in 5 m depth bins based on this video data. A minimum of 30 replicates from each combination of habitat type, depth bin and reporting section were completed for the analysis. Where meeting this criteria was not possible, the algal data were not analysed for that class.
- Hierarchy level
- Dataset
Reference System Information
- Reference system identifier
- EPSG/WGS 84 (EPSG:4326)
- Hierarchy level
- Dataset
Platform
Identifier
- Code
- research vessel
Metadata
- Metadata identifier
- urn:uuid/24d48803-5dae-4425-b776-612c4ac2080a
- Language
- English
- Character encoding
- UTF8
Point of contact
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/24d48803-5dae-4425-b776-612c4ac2080a
Point of truth URL of this metadata record
- Date info (Creation)
- 2020-09-23T12:26:17
- Date info (Revision)
- 2025-08-12T23:25:09
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
Provided by
