Data

Project overview: Habitat and population assessment of giant crabs (2003 - 2005)

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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Both of these have been expanding over the past decade, with potential of impact to target species abundance, habitat structure, and ecosystem structure. This project aimed to research the habitat effects of these activities over the period 2003-2005 through sampling of fished and unfished areas using video transects, multi-beam acoustic swath mapping, and collection of physical samples using sediment grabs and benthic sleds, using chartered vessels and a voyage of the National Facility FRV Southern Surveyor in 2004. Specific objectives for the giant crab (Pseudocarcinas gigas) habitat survey are as follows: - define and map giant crab habitat on the shelf edge, at several key locations off the Tasmanian east and west coasts; - detail distribution of giant crabs in relation to habitat features; - evaluate ecosystem links between habitats; - evaluate the vulnerability of habitat to damage by fishing (trawls and pots); and - evaluate the ability to obtain fishery independent information by video on the abundance, sex ratio, condition and size of giant crabs. The CSIRO portion of the work comprised a series of four surveys to assess the seabed habitats of the giant crab at the edge of the continental shelf around Tasmania. 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for this project have been added to the Oracle data base BHIMAGE and the associated videos and still images have been archived as described in MarLIN record 14436 'Benthic Habitats Video Image Archive'.Maintenance and Update Frequency: asNeededStatement: Data source: field surveys; Video data visually scored for dominant substrate, geomorphology and fauna in Adobe premiere; Camera systems data files (dvid) used to calculate camera position, link data to video frames via tape-timecode Still images renamed using UTC time stamp, linked to video and camera systems files via time stamp Detailed enumeration of sponge morphotypes for a sub-set of 576 still images (for a separate publication: Schlacher et al 2009) 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for this project have been added to the Oracle data base BHIMAGE and the associated videos and still images have been archived as described in MarLIN record 14436 'Benthic Habitats Video Image Archive'.&rft.creator=Anonymous&rft.date=2004&rft.coverage=westlimit=143.5; southlimit=-43; eastlimit=149; northlimit=-39; projection=AGD84&rft.coverage=westlimit=143.5; southlimit=-43; eastlimit=149; northlimit=-39; projection=AGD84&rft.coverage=uplimit=-50; downlimit=-550&rft.coverage=uplimit=-50; downlimit=-550&rft_rights=Release with the permission of the custodian&rft_subject=oceans&rft_subject=FISHERIES&rft_subject=EARTH SCIENCE&rft_subject=AGRICULTURE&rft_subject=AGRICULTURAL AQUATIC SCIENCES&rft_subject=ANIMALS/INVERTEBRATES&rft_subject=BIOLOGICAL CLASSIFICATION&rft_subject=DECAPODS&rft_subject=ANIMALS/INVERTEBRATES&rft_subject=ARTHROPODS&rft_subject=CRUSTACEANS&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=CONSERVATION&rft_subject=HUMAN DIMENSIONS&rft_subject=ENVIRONMENTAL IMPACTS&rft_subject=SOCIAL BEHAVIOR&rft_subject=SEDIMENTS&rft_subject=LAND SURFACE&rft_subject=EROSION/SEDIMENTATION&rft_subject=Earth Science | Land Surface | Topography | Contours&rft_subject=SURFACE ROUGHNESS&rft_subject=TOPOGRAPHY&rft_subject=CONTINENTAL MARGINS&rft_subject=OCEANS&rft_subject=BATHYMETRY/SEAFLOOR TOPOGRAPHY&rft_subject=SEAFLOOR TOPOGRAPHY&rft_subject=SUBMARINE CANYONS&rft_subject=WATER DEPTH&rft_subject=ACOUSTIC REFLECTIVITY&rft_subject=OCEAN ACOUSTICS&rft_subject=ACOUSTIC SCATTERING&rft_subject=ADCP (Acoustic Doppler Current Profiler)&rft_subject=Acoustic Equipment/Echosounders&rft_subject=Cameras - Still - Underwater&rft_subject=Cameras - Video - Underwater&rft_subject=Underwater Surveys (acquisition and/or analysis)&rft_subject=Coastal Waters (Australia) | Tasmania Coast East and Southeast, TAS&rft_subject=Coastal Waters (Australia) | Tasmania Coast North, TAS&rft_subject=Coastal Waters (Australia) | Tasmania Coast West, TAS&rft_subject=Global / Oceans | Southern Ocean&rft_subject=Regional Seas | Tasman Sea&rft_subject=Field Program: DRII 1/2003&rft_subject=Research Voyage: CH 1/2004&rft_subject=Research Voyage: CH 1/2005&rft_subject=Research Voyage: SS 04/2004&rft_subject=Habitat and population assessment of giant crabs&rft_subject=Benthic habitat image surveys and analysis&rft_subject=Ship: Challenger&rft_subject=Ship: Dell Richey II&rft_subject=Ship: Southern Surveyor&rft_subject=Pseudocarcinus gigas&rft_subject=Current direction in the water body&rft_subject=Current speed in the water body&rft_subject=Eastward current velocity in the water body&rft_subject=Northward current velocity in the water body&rft_subject=Upward current velocity in the water body&rft_subject=research vessel&rft_subject=current profilers&rft.type=dataset&rft.language=English Access the data
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Brief description

This is the CSIRO portion of the collaborative Tasmanian Aquaculture and Fisheries Institute, University of Tasmania (TAFI)/CSIRO Marine Research Project titled 'Understanding Shelf-break Habitat for Sustainable Management of Fisheries with Spatial Overlap', which aimed to map and understand shelf-break seabed habitats (~150-350m depths) around Tasmania, Australia, which is an area of interaction between two fishery sectors, giant crab trappers and finfish trawlers. Both of these have been expanding over the past decade, with potential of impact to target species abundance, habitat structure, and ecosystem structure. This project aimed to research the habitat effects of these activities over the period 2003-2005 through sampling of fished and unfished areas using video transects, multi-beam acoustic swath mapping, and collection of physical samples using sediment grabs and benthic sleds, using chartered vessels and a voyage of the National Facility FRV Southern Surveyor in 2004. Specific objectives for the giant crab (Pseudocarcinas gigas) habitat survey are as follows: - define and map giant crab habitat on the shelf edge, at several key locations off the Tasmanian east and west coasts; - detail distribution of giant crabs in relation to habitat features; - evaluate ecosystem links between habitats; - evaluate the vulnerability of habitat to damage by fishing (trawls and pots); and - evaluate the ability to obtain fishery independent information by video on the abundance, sex ratio, condition and size of giant crabs. The CSIRO portion of the work comprised a series of four surveys to assess the seabed habitats of the giant crab at the edge of the continental shelf around Tasmania.
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: field surveys; Video data visually scored for dominant substrate, geomorphology and fauna in Adobe premiere; Camera systems data files (dvid) used to calculate camera position, link data to video frames via tape-timecode Still images renamed using UTC time stamp, linked to video and camera systems files via time stamp Detailed enumeration of sponge morphotypes for a sub-set of 576 still images (for a separate publication: Schlacher et al 2009)
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'.

Notes

Credit
Part of TAFI (University of Tasmania)/CMR project with PI Caleb Gardner, FRDC Funding (project no. 2004/066)
Credit
Franzis Althaus
Credit
Bruce Barker
Credit
Pamela Brodie
Credit
Karen Gowlett-Holmes
Credit
Gordon Keith
Credit
Rudy Kloser
Credit
Tim Ryan
Credit
Alan Williams (CSIRO)
Credit
Caleb Gardner
Credit
Dave Mills (TAFI)

Data time period: 2003-11-02 to 2005-04-13

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149,-39 149,-43 143.5,-43 143.5,-39 149,-39

146.25,-41

text: westlimit=143.5; southlimit=-43; eastlimit=149; northlimit=-39; projection=AGD84

text: uplimit=-50; downlimit=-550

Subjects
Acoustic Reflectivity | Acoustic Scattering | ADCP (Acoustic Doppler Current Profiler) | AGRICULTURAL AQUATIC SCIENCES | AGRICULTURE | ANIMALS/INVERTEBRATES | Animals/Invertebrates | AQUATIC ECOSYSTEMS | ARTHROPODS | Acoustic Equipment/Echosounders | BATHYMETRY/SEAFLOOR TOPOGRAPHY | Benthic Habitat | BIOLOGICAL CLASSIFICATION | BIOSPHERE | Benthic habitat image surveys and analysis | Conservation | Continental Margins | CRUSTACEANS | Cameras - Still - Underwater | Cameras - Video - Underwater | Coastal Waters (Australia) | Tasmania Coast East and Southeast, TAS | Coastal Waters (Australia) | Tasmania Coast North, TAS | Coastal Waters (Australia) | Tasmania Coast West, TAS | Current direction in the water body | Current speed in the water body | Decapods | EARTH SCIENCE | ENVIRONMENTAL IMPACTS | EROSION/SEDIMENTATION | Earth Science | Land Surface | Topography | Contours | Eastward current velocity in the water body | Fisheries | Field Program: DRII 1/2003 | Global / Oceans | Southern Ocean | HUMAN DIMENSIONS | Habitat and population assessment of giant crabs | LAND SURFACE | Marine | Marine Habitat | Northward current velocity in the water body | OCEAN ACOUSTICS | OCEANS | Pseudocarcinus gigas | Regional Seas | Tasman Sea | Research Voyage: CH 1/2004 | Research Voyage: CH 1/2005 | Research Voyage: SS 04/2004 | Seafloor Topography | Sediments | Social Behavior | Sponges | Submarine Canyons | Surface Roughness | Ship: Challenger | Ship: Dell Richey II | Ship: Southern Surveyor | TOPOGRAPHY | Underwater Surveys (acquisition and/or analysis) | Upward current velocity in the water body | Water Depth | WETLANDS | current profilers | oceans | research vessel |

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Access to video and still images via Benthic Habitats Video Image Archive record (Data Link)

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

See: SS2004/04 - Testing, refinement and application of methodology for optimised seabed mapping : Biological data (Documentation Link)

uri : https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/fc2e5496-7765-4868-a532-c63732a191f3

See: SS2004/04 - Testing, refinement and application of methodology for optimised seabed mapping : Sediment samples (Documentation Link)

uri : https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/dfb7f315-1e30-4a7f-b68e-1fe6da5aa49f

Identifiers
  • global : e5bb5a02-66d3-4b0d-bce7-6f233c5d3cd3
  • Local : Marlin Record Number: 6278
  • Local : Anzlic Identifier: ANZCW0306006278
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