Data

Tasmanian Seamounts Study 1997: Photographic Transects

Australian Ocean Data Network
CSIRO O&A, Information & Data Centre (Point of contact) Data Officer (AR), Hobart (Processor of) Williams, Alan (Point of contact)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/6ed17e1e-271d-42c3-9632-7f0933319c4e&rft.title=Tasmanian Seamounts Study 1997: Photographic Transects&rft.identifier=Anzlic Identifier: ANZCW0306005257&rft.publisher=Australian Ocean Data Network&rft.description=This record describes the photographic transect survey data collected as part of the Tasmanian Seamounts Study undertaken by CSIRO Division of Fisheries in January 1997. Ten photographic transects were made from the base to pinnacle of 4 out of 14 seamounts in the survey area, approx. 100 km to the south of Tasmania, using a Photosea 2000 stereoscopic deepsea camera system, in water depths ranging from 2180 m to 714 m. The transects were typically oriented N-S and E-W on each seamount, with 2 transects replicated. Between 67 and 150 photos were taken per transect, at a mean range between photos of 27 m, at heights of 1 to 4 m off the bottom. The photographs were later assessed for percent cover by a range of bottom types, and for numbers of recognisable organisms of particular types. In 2008/09 the slide images were scanned and re-assessed for fauna and sediment types for comparison with image data collected on voyages SS11 / 2006 and SS2/2007. The image annotations collected for this project have been added to the Oracle data base BHIMAGE and the associated videos and still images have been archived as described in MarLIN record 14436 'Benthic Habitats Video Image Archive'.Maintenance and Update Frequency: asNeededStatement: Data source: original field data The photographs were obtained using a surface activated, stereoscopic camera (Photosea 2000) equiped with two strobes and acoustic pinger to determine height off the bottom. depth and position data from ship's systems were linked to individual slides using station, roll and frame numbers (inbedded in slides) Slides were digitised and archived as jpegs in 2008/09, naming of digital images using the inbedded numeric code Photo-scoring: calculate densities using an estimated area for the FoV&rft.creator=Anonymous&rft.date=1999&rft.coverage=westlimit=147; southlimit=-44.5; eastlimit=147.5; northlimit=-44; projection=AGD84&rft.coverage=westlimit=147; southlimit=-44.5; eastlimit=147.5; northlimit=-44; projection=AGD84&rft.coverage=uplimit=-700; downlimit=-1800&rft.coverage=uplimit=-700; downlimit=-1800&rft_rights=Release with the permission of the custodian&rft_subject=oceans&rft_subject=ANIMALS/INVERTEBRATES&rft_subject=EARTH SCIENCE&rft_subject=BIOLOGICAL CLASSIFICATION&rft_subject=CRUSTACEANS&rft_subject=ANIMALS/INVERTEBRATES&rft_subject=ARTHROPODS&rft_subject=ANTHOZOANS/HEXACORALS&rft_subject=CNIDARIANS&rft_subject=SEA ANEMONES&rft_subject=ANTHOZOANS/HEXACORALS&rft_subject=ECHINODERMS&rft_subject=MOLLUSKS&rft_subject=SEGMENTED WORMS (ANNELIDS)&rft_subject=SPONGES&rft_subject=BENTHIC HABITAT&rft_subject=BIOSPHERE&rft_subject=AQUATIC ECOSYSTEMS&rft_subject=MARINE HABITAT&rft_subject=MARINE&rft_subject=WETLANDS&rft_subject=COMMUNITY STRUCTURE&rft_subject=ECOLOGICAL DYNAMICS&rft_subject=COMMUNITY DYNAMICS&rft_subject=BIOMASS DYNAMICS&rft_subject=ECOSYSTEM FUNCTIONS&rft_subject=CONSERVATION&rft_subject=HUMAN DIMENSIONS&rft_subject=ENVIRONMENTAL IMPACTS&rft_subject=CONTINENTAL MARGINS&rft_subject=OCEANS&rft_subject=BATHYMETRY/SEAFLOOR TOPOGRAPHY&rft_subject=SEAMOUNTS&rft_subject=Cameras - Still - Underwater&rft_subject=Global / Oceans | Southern Ocean&rft_subject=Regional Seas | Tasman Sea&rft_subject=States, Territories (Australia) | Tasmania&rft_subject=Research Voyage: SS 01/97&rft_subject=The seamount fauna off southern Tasmania: impacts of trawling, conservation and role within the fishery ecosystem (FRDC project no. 95/058) 1996-1998&rft_subject=Benthic habitat image surveys and analysis&rft_subject=Ship: Southern Surveyor&rft.type=dataset&rft.language=English Access the data
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Brief description

This record describes the photographic transect survey data collected as part of the Tasmanian Seamounts Study undertaken by CSIRO Division of Fisheries in January 1997. Ten photographic transects were made from the base to pinnacle of 4 out of 14 seamounts in the survey area, approx. 100 km to the south of Tasmania, using a Photosea 2000 stereoscopic deepsea camera system, in water depths ranging from 2180 m to 714 m. The transects were typically oriented N-S and E-W on each seamount, with 2 transects replicated. Between 67 and 150 photos were taken per transect, at a mean range between photos of 27 m, at heights of 1 to 4 m off the bottom. The photographs were later assessed for percent cover by a range of bottom types, and for numbers of recognisable organisms of particular types. In 2008/09 the slide images were scanned and re-assessed for fauna and sediment types for comparison with image data collected on voyages SS11 / 2006 and SS2/2007. The image annotations collected for this project have been added to the Oracle data base BHIMAGE and the associated videos and still images have been archived as described in MarLIN record 14436 'Benthic Habitats Video Image Archive'.

Lineage

Maintenance and Update Frequency: asNeeded
Statement: Data source: original field data The photographs were obtained using a surface activated, stereoscopic camera (Photosea 2000) equiped with two strobes and acoustic pinger to determine height off the bottom. depth and position data from ship's systems were linked to individual slides using station, roll and frame numbers (inbedded in slides) Slides were digitised and archived as jpegs in 2008/09, naming of digital images using the inbedded numeric code Photo-scoring: calculate densities using an estimated area for the FoV

Notes

Credit
FRDC - funding (grant 95/058)
Credit
Environment Australia - funding (OR2000) CSIRO Wealth from oceans and and Census of Marine Life, Seamounts Project - CenSeam (2008/09 archiving, documentation and use of these data)
Credit
Tony Koslow
Credit
Sebastian Rainer
Credit
Mark Lewis
Credit
Karen Gowlett-Holmes
Credit
Alan Williams
Credit
Jo Dowdney

Data time period: 1997-01-20 to 1997-01-26

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147.5,-44 147.5,-44.5 147,-44.5 147,-44 147.5,-44

147.25,-44.25

text: westlimit=147; southlimit=-44.5; eastlimit=147.5; northlimit=-44; projection=AGD84

text: uplimit=-700; downlimit=-1800

Subjects
Animals/Invertebrates | ANIMALS/INVERTEBRATES | Anthozoans/Hexacorals | ANTHOZOANS/HEXACORALS | AQUATIC ECOSYSTEMS | ARTHROPODS | BATHYMETRY/SEAFLOOR TOPOGRAPHY | Benthic Habitat | BIOLOGICAL CLASSIFICATION | Biomass Dynamics | BIOSPHERE | Benthic habitat image surveys and analysis | CNIDARIANS | COMMUNITY DYNAMICS | Community Structure | Conservation | Continental Margins | Crustaceans | Cameras - Still - Underwater | EARTH SCIENCE | Echinoderms | ECOLOGICAL DYNAMICS | ECOSYSTEM FUNCTIONS | ENVIRONMENTAL IMPACTS | Global / Oceans | Southern Ocean | HUMAN DIMENSIONS | Marine | Marine Habitat | Mollusks | OCEANS | Regional Seas | Tasman Sea | Research Voyage: SS 01/97 | Sea Anemones | Seamounts | Segmented Worms (Annelids) | Sponges | Ship: Southern Surveyor | States, Territories (Australia) | Tasmania | The seamount fauna off southern Tasmania: impacts of trawling, conservation and role within the fishery ecosystem (FRDC project no. 95/058) 1996-1998 | WETLANDS | oceans |

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Other Information
Benthic Habitats Video Image Archive (Documentation Link)

uri : https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/02c32147-b73c-20fe-e053-08114f8c48ee

Project summary (related project) (Documentation Link)

uri : https://www.marine.csiro.au/research/seamounts/

Identifiers
  • global : 6ed17e1e-271d-42c3-9632-7f0933319c4e
  • Local : Marlin Record Number: 5257
  • Local : Anzlic Identifier: ANZCW0306005257
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