Macroalgal coverage from video surveys of long spined sea urchin (Centrostephanus rodgersii) barrens habitat, eastern Tasmania, Australia (2001-2002)
Citation
Attribution Constraints The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link). Usage Constraints The data described in this record are the intellectual property of the University of Tasmania through the School of Zoology and the Tasmanian Aquaculture and Fisheries Institute. By using this data you are accepting the license agreement and terms specified above. You accept all risks and responsibility for losses, damages, costs and other consequences resulting directly or indirectly from using this site and any information or material available from it. https://doi.org/10.15468/h9q48f accessed via GBIF.org on 2024-12-12.Description
The macroalgal cover was recorded from video surveys of the spatial extent of C. rodgersii "barrens" on rocky reef habitats using a towed underwater video system. Sampling took place at 13 regions along the east coast of Tasmania, each comprising 3 subsites. Thus, at each site, ca. 6-7 km of inshore rocky reef was surveyed for barren habitat using this method, with the entire survey covering > 80 km of reef.
Substratum types were resolved as either "unclassified reef" if the substratum type was unclear (usually where macroalgal cover prevented a clear view of the substratum) or, where the substratum could be discerned, "flat rock" with little apparent relief, "boulder reef", "cobble", "gravel", "pebble", or "sand". Habitat types denoted either C. rodgersii barrens, or habitat dominated by particular canopy-forming species.
Absence records are recorded. Macroalagal cover per taxa is measured as percent cover in 3 categories of 'Dominant algal species, >80% of canopy','Common algal species, 40-80% of canopy' and 'Rare algal species, <40% of canopy' for each observation.
Metadata record is http://metadata.imas.utas.edu.au/geonetwork/srv/en/metadata.show?uuid=6d88abe0-8e7a-11dc-94b1-00188b4c0af8 and data download was from the IMAS Data Portal on 2019-09-05 via https://geoserver.imas.utas.edu.au/geoserver/wfs?version=1.0.0&request=GetFeature&typeName=imas:FR1_CRJohnson_Video_surveys_macroalgae_substratum_DATA&outputFormat=CSV
Additional info
marine, harvested by iOBISTaxonomic Coverages
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Carpoglossum confluensrank: species
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Durvillaea potatorumrank: species
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Ecklonia radiatarank: species
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Lessonia corrugatarank: species
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Macrocystis pyriferarank: species
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Phyllospora comosarank: species
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Caulerpa spp.rank: genus
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Cystophora spprank: genus
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Perithalia spp.rank: genus
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Sargassum spp.
Geographic Coverages
Bibliographic Citations
- Johnson, C., Ling, S., Ross, J., Shepherd, S. and Miller, K., 2005. Establishment of the long-spined sea urchin (Centrostephanus rodgersii) in Tasmania: First assessment of potential threats to fisheries. FRDC Final Report, Project No. 2001/044. University of Tasmania, Tasmanian Aquaculture and Fisheries Institute, School of Zoology. -
Contacts
Craig Johnsonoriginator
position: Principal Investigator
Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS)
IMAS - Hobart, Private Bag 129
Hobart
7001
Tasmania
Craig Johnson
metadata author
position: Principal Investigator
Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS)
IMAS - Hobart, Private Bag 129
Hobart
7001
Tasmania
OBIS Australia Node manager
publisher
position: OBIS Australia Node Manager
CSIRO National Collections and Marine Infrastructure Data Centre
PO Box 1538
Hobart
7001
Tasmania
AU
email: obisau@csiro.au
homepage: http://www.obis.org.au
Craig Johnson
administrative point of contact
position: Principal Investigator
Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS)
IMAS - Hobart, Private Bag 129
Hobart
7001
Tasmania