Data

Depletion Based Population Estimates for Western Rock Lobster

Australian Ocean Data Network
Department of Fisheries (DoF), Western Australian Government (Associated with) Luke Edwards (Distributes) WA DoF Manager (Point of contact) iVEC (Associated with)
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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://catalogue.aodn.org.au:443/geonetwork/srv/api/records/516811d7-ccdf-207a-e0440003ba8c79dd&rft.title=Depletion Based Population Estimates for Western Rock Lobster&rft.identifier=516811d7-ccdf-207a-e0440003ba8c79dd&rft.publisher=Australian Ocean Data Network&rft.description=Depletion methods examine the decline in catch rate as catch is removed from a closed population. These methods provide a way to estimate original population size before fishing and the residual biomass after fishing and hence exploitation rate. This approach allows long-term changes in catchability and hence fishing efficiency to be assessed in the estimate of exploitation rate. The technique is applied to the western rock lobster fishery in Western Australia for the non-migrating part of the season, March to June. The trends in catchability, residual biomass and exploitation for three zones of the fishery since the 1984/85 season are examined.Time: completion June 2004Maintenance and Update Frequency: unknownStatement: Original record compiled for the Western Australian Marine Science Institution (WAMSI), Project 3.8, 2008. Originally sourced from WA Fisheries website (May, 2008). Spatial extent assumed to be whole of WA.&rft.creator=Anonymous&rft.date=2017&rft.coverage=westlimit=111; southlimit=-35; eastlimit=129; northlimit=-13&rft.coverage=westlimit=111; southlimit=-35; eastlimit=129; northlimit=-13&rft_rights=No Restrictions&rft_subject=biota&rft_subject=environment&rft.type=dataset&rft.language=English Access the data
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Depletion methods examine the decline in catch rate as catch is removed from a closed population. These methods provide a way to estimate original population size before fishing and the residual biomass after fishing and hence exploitation rate. This approach allows long-term changes in catchability and hence fishing efficiency to be assessed in the estimate of exploitation rate. The technique is applied to the western rock lobster fishery in Western Australia for the non-migrating part of the season, March to June. The trends in catchability, residual biomass and exploitation for three zones of the fishery since the 1984/85 season are examined.

Time: completion June 2004

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Maintenance and Update Frequency: unknown
Statement: Original record compiled for the Western Australian Marine Science Institution (WAMSI), Project 3.8, 2008. Originally sourced from WA Fisheries website (May, 2008). Spatial extent assumed to be whole of WA.

Notes

Credit
I. Wright (Project leader)

Modified: 06 2008

Data time period: 1984 to 2004

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129,-13 129,-35 111,-35 111,-13 129,-13

120,-24

text: westlimit=111; southlimit=-35; eastlimit=129; northlimit=-13

Subjects
biota | environment |

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Other Information
Project summary - Depletion Based Population Estimates for Western Rock Lobster

url : http://www.fish.wa.gov.au/docs/pub/ResProject/stockassessment/project05.php?0405

Identifiers
  • global : 516811d7-ccdf-207a-e0440003ba8c79dd