Data

An integrated stock assessment for the Heard Island and the McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery in CCAMLR Division 58.5.2

Australian Antarctic Division
Ziegler, P. ; ZIEGLER, PHILIPPE
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://data.aad.gov.au/metadata/AAS_4030_ToothfishAssessment&rft.title=An integrated stock assessment for the Heard Island and the McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery in CCAMLR Division 58.5.2&rft.identifier=http://data.aad.gov.au/metadata/AAS_4030_ToothfishAssessment&rft.publisher=Australian Antarctic Data Centre&rft.description=This integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) fishery at the Heard Island and the McDonald Islands in CCAMLR Division 58.5.2, with data until end of July 2015, is based on the best available estimates of model parameters, the use of abundance estimates from a random stratified trawl survey (RSTS), longline tag-release data from 2012-2014 and longline tag-recapture data from 2013-2015, and auxiliary commercial composition data to aid with the estimation of year class strength and selectivity functions of the trawl, longline and trap sub-fisheries. All model runs were conducted with CASAL version 2.30-2012-03-21 (Bull et al. 2012). The assessment model leads to an MCMC estimate of the virgin spawning stock biomass B0 = 87 077 tonnes (95% CI: 78 500-97 547 tonnes). Estimated SSB status in 2015 was 0.64 (95% CI: 0.59-0.69). Using this model, a catch limit of 3405 tonnes satisfies the CCAMLR decision rules. Similarly to the 2014 assessment, the projected stock remains above the target level for the entire projection period.Progress Code: completedStatement: This assessment model is based on the best available data and estimates of model parameters.&rft.creator=Ziegler, P. &rft.creator=ZIEGLER, PHILIPPE &rft.date=2016&rft.coverage=westlimit=70.7959; southlimit=-55.89996; eastlimit=80.37598; northlimit=-51.48138&rft.coverage=westlimit=70.7959; southlimit=-55.89996; eastlimit=80.37598; northlimit=-51.48138&rft.coverage=uplimit=2500; downlimit=0&rft.coverage=uplimit=2500; downlimit=0&rft_rights=The data set is commercial in-confidence. A copy of the report is publicly available for download from the provided URL.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=The results of the stock assessment are available in the CCAMLR Fishery Report for Division 58.5.2 at: https://www.ccamlr.org/en/fisheries/toothfish-fisheries This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4030_ToothfishAssessment when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=oceans&rft_subject=biota&rft_subject=EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS&rft_subject=EARTH SCIENCE > OCEANS > AQUATIC SCIENCES > FISHERIES&rft_subject=EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > FISH&rft_subject=CASAL MODEL FRAMEWORK&rft_subject=STOCK ASSESSMENT&rft_subject=Computer > Computer&rft_subject=MODELS&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=AMD&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=OCEAN > SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS&rft.type=dataset&rft.language=English Access the data
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CC-BY

Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/legalcode

The data set is commercial in-confidence. A copy of the report is publicly available for download from the provided URL.

The results of the stock assessment are available in the CCAMLR Fishery Report for Division 58.5.2 at:
https://www.ccamlr.org/en/fisheries/toothfish-fisheries


This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4030_ToothfishAssessment when using these data.

This metadata record is publicly available.

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Full description

This integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) fishery at the Heard Island and the McDonald Islands in CCAMLR Division 58.5.2, with data until end of July 2015, is based on the best available estimates of model parameters, the use of abundance estimates from a random stratified trawl survey (RSTS), longline tag-release data from 2012-2014 and longline tag-recapture data from 2013-2015, and auxiliary commercial composition data to aid with the estimation of year class strength and selectivity functions of the trawl, longline and trap sub-fisheries. All model runs were conducted with CASAL version 2.30-2012-03-21 (Bull et al. 2012).

The assessment model leads to an MCMC estimate of the virgin spawning stock biomass B0 = 87 077 tonnes (95% CI: 78 500-97 547 tonnes). Estimated SSB status in 2015 was 0.64 (95% CI: 0.59-0.69). Using this model, a catch limit of 3405 tonnes satisfies the CCAMLR decision rules. Similarly to the 2014 assessment, the projected stock remains above the target level for the entire projection period.

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Progress Code: completed
Statement: This assessment model is based on the best available data and estimates of model parameters.

Notes

Purpose
This stock assessment and its stock projections is used to provide advice to setting a catch limit for the Patagonian toothfish (Dissostichus eleginoides) fishery at the Heard Island and the McDonald Islands in CCAMLR Division 58.5.2.

Data time period: 1997-01-01 to 2015-11-30

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80.37598,-51.48138 80.37598,-55.89996 70.7959,-55.89996 70.7959,-51.48138 80.37598,-51.48138

75.58594,-53.69067

text: westlimit=70.7959; southlimit=-55.89996; eastlimit=80.37598; northlimit=-51.48138

text: uplimit=2500; downlimit=0

Subjects
AMD | AMD/AU | CASAL MODEL FRAMEWORK | CEOS | Computer > Computer | EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > FISH | EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS | EARTH SCIENCE > OCEANS > AQUATIC SCIENCES > FISHERIES | GEOGRAPHIC REGION > POLAR | MODELS | OCEAN > SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS | STOCK ASSESSMENT | biota | oceans |

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Other Information
Download point for the stock assessment models - not publicly available (GET DATA > DIRECT DOWNLOAD)

uri : https://data.aad.gov.au/eds/4230/download

Public information for AAS project AAS_4030 (PROJECT HOME PAGE)

uri : https://projects.aad.gov.au/report_project_public.cfm?project_no=AAS_4030

Download point for the 2015 CCAMLR report (VIEW RELATED INFORMATION > PUBLICATIONS)

uri : https://data.aad.gov.au/eds/4231/download

Download the CCAMLR report from the CCAMLR website (VIEW RELATED INFORMATION > PUBLICATIONS)

uri : https://www.ccamlr.org/en/fisheries/toothfish-fisheries

Citation reference for this metadata record and dataset. (VIEW RELATED INFORMATION)

uri : https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4030_ToothfishAssessment

Identifiers
  • global : AAS_4030_ToothfishAssessment