Data

Investigation of School and Gummy Shark Nursery Areas in South East Tasmania and South East Australia

Australian Ocean Data Network
CSIRO O&A, Information & Data Centre (Point of contact) Data Officer (AR), Hobart (Processor of)
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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/1b948bfc-d5be-4154-aa2a-6e5133d4b263&rft.title=Investigation of School and Gummy Shark Nursery Areas in South East Tasmania and South East Australia&rft.identifier=Anzlic Identifier: ANZCW0306008311&rft.publisher=Australian Ocean Data Network&rft.description=School shark pupping areas in inshore waters of Tasmania and Victoria identified by Olsen in the 1940s and 1950s were re-sampled using gillnets & longlines from 1991-97. Current catch rates are much lower at all sites and pups are apparently no longer present at some sites. Additional sampling of mainly inshore embayments in Tasmania and Victoria failed to locate significant new pupping grounds of school shark. Limited sampling in South Australia and Western Australia failed to catch school shark pups. Relatively few gummy shark pups were caught anywhere in this study; no significant pupping grounds were located and pupping appears to take place over scattered locations in inshore waters. Catch data includes a wide variety of sharks, rays and teleosts species, the most numerous being: Squalus megalops, Platycephalus bassensis, Squalus acanthias, Pseudophycis bachus, Aldrichetta forsteri, Mustelus antarticus, Callorhynchus milii, Galeorhinus galeus, Tracurus declivis, Cephaloscyllium laticeps, Neosebastes scorpaenoides, Platycephalus richardsoni, and Sillago bassensis. The fish catch data was taken from school shark nursery areas in Tasmania and Victoria, this study is split into 2 portions, first a 12 month study (91-92), followed by a multi-year study (92-97). Further documentation was added in March 2014, see below.Progress Code: completedMaintenance and Update Frequency: notPlannedStatement: Bottom-set gillnets 75m long comprising panels of 50, 75 and 102 mm stretch-mesh monofilament and several configurations of longlines were used (FRDC reports 91/23 and 93/061). In 1991-92 sites were restricted to Storm Bay, Frederick Henry Bay and Pittwater. From 1992-97 sampling was extended to a number of sites around Tasmania and Victoria.&rft.creator=Anonymous&rft.date=2008&rft.coverage=westlimit=141; southlimit=-45; eastlimit=150; northlimit=-37.5&rft.coverage=westlimit=141; southlimit=-45; eastlimit=150; northlimit=-37.5&rft_rights= https://creativecommons.org/licenses/by/4.0/&rft_rights=https://i.creativecommons.org/l/by/4.0/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Attribution 4.0&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&rft_rights=Attribution 4.0&rft_rights= https://creativecommons.org/licenses/by/4.0/&rft_subject=biota&rft_subject=Earth Science | Biological Classification | Animals/Vertebrates | Fish&rft_subject=Earth Science | Biosphere | Aquatic Ecosystems | Coastal Habitat&rft_subject=Field Surveys (acquisition and/or analysis)&rft_subject=Logbook/Catch Data (acquisition and/or analysis)&rft_subject=Coastal Waters (Australia) | Tasmania Coast, TAS&rft_subject=Coastal Waters (Australia) | Victoria Coast, VIC&rft_subject=Investigation of school and gummy shark nursery areas in south eastern Australia (FIRDC project no. 91/23, 93/061) 1991-1999&rft.type=dataset&rft.language=English Access the data
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Brief description

School shark pupping areas in inshore waters of Tasmania and Victoria identified by Olsen in the 1940s and 1950s were re-sampled using gillnets & longlines from 1991-97. Current catch rates are much lower at all sites and pups are apparently no longer present at some sites. Additional sampling of mainly inshore embayments in Tasmania and Victoria failed to locate significant new pupping grounds of school shark. Limited sampling in South Australia and Western Australia failed to catch school shark pups. Relatively few gummy shark pups were caught anywhere in this study; no significant pupping grounds were located and pupping appears to take place over scattered locations in inshore waters. Catch data includes a wide variety of sharks, rays and teleosts species, the most numerous being: Squalus megalops, Platycephalus bassensis, Squalus acanthias, Pseudophycis bachus, Aldrichetta forsteri, Mustelus antarticus, Callorhynchus milii, Galeorhinus galeus, Tracurus declivis, Cephaloscyllium laticeps, Neosebastes scorpaenoides, Platycephalus richardsoni, and Sillago bassensis. The fish catch data was taken from school shark nursery areas in Tasmania and Victoria, this study is split into 2 portions, first a 12 month study (91-92), followed by a multi-year study (92-97). Further documentation was added in March 2014, see below.

Lineage

Progress Code: completed
Maintenance and Update Frequency: notPlanned
Statement: Bottom-set gillnets 75m long comprising panels of 50, 75 and 102 mm stretch-mesh monofilament and several configurations of longlines were used (FRDC reports 91/23 and 93/061). In 1991-92 sites were restricted to Storm Bay, Frederick Henry Bay and Pittwater. From 1992-97 sampling was extended to a number of sites around Tasmania and Victoria.

Notes

Credit
We wish to thank the Fisheries Research and Development Corporation (FRDC) for funding the research. In addition, Terry Walker, Lauren Brown and Natalie Bridge (from MAFRI, Queenscliff)
Credit
Bruce Barker, Stephanie Davenport and Mark Green from CSIRO Division of Marine Research,
Credit
G. J. West and J. D. Stevens

Data time period: 1959 to 1997

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150,-37.5 150,-45 141,-45 141,-37.5 150,-37.5

145.5,-41.25

text: westlimit=141; southlimit=-45; eastlimit=150; northlimit=-37.5

Subjects
Coastal Waters (Australia) | Tasmania Coast, TAS | Coastal Waters (Australia) | Victoria Coast, VIC | Earth Science | Biological Classification | Animals/Vertebrates | Fish | Earth Science | Biosphere | Aquatic Ecosystems | Coastal Habitat | Field Surveys (acquisition and/or analysis) | Investigation of school and gummy shark nursery areas in south eastern Australia (FIRDC project no. 91/23, 93/061) 1991-1999 | Logbook/Catch Data (acquisition and/or analysis) | biota |

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  • Local : Anzlic Identifier: ANZCW0306008311
  • Local : Marlin Record Number: 8311
  • global : 1b948bfc-d5be-4154-aa2a-6e5133d4b263