Résultats de la recherche
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Preliminary analysis of toothfish catch, CPUE, size structure and mark-recapture data from SSRUs 486A and 486G, with comments on the sustainability of different harvest levels
in Subarea 48.6 north of 60°S (the combined SSRUs 48.6A and 48.6G). A preliminary assessment for D ... age-structured production model approach with a deterministic recruitment is applied. Age is linked ... to size via a simple von-Bertalanffy equation in which variance in catch-at-length for a given age is ... standardised using GLMs prior to their use in the assessments. A simple accounting equation is used to keep ...
Meeting Document : WG-FSA-12/31 : Auteur(s): E. Thomson and M. Bergh (South Africa)
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Assessing status and change in Southern Ocean ecosystems
Abstract: A great challenge for Southern Ocean ecosystem science is to assess the status and ... undertake these assessments? a. what is the current status of Antarctic and Southern Ocean ecosystems ... indicate a change in state of those ecosystems and provide suitable input to, validation or correction of ... circumpolar ecosystem assessments. Author(s): A. Constable (Australia), D. Costa (USA), E. Murphy (United ...
Meeting Document : WG-EMM-13/36 : Auteur(s): A. Constable (Australia), D. Costa (USA), E. Murphy (United Kingdom), E. Hofmann, O. Schofield (USA), A. Press (Australia), N. Johnston (United Kingdom) and L. Newman (Australia)
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Comparison of catches for toothfish in 58.4.1, 58.4.2, and 48.6 from vessels with anomalous CPUE
assessment of a stock. In 2013, Korea held a workshop on the anomalous CPUE data reported from some Korean ... season to illustrate a method for re-adjusting catches that may be area-misreported. We do this by using ... a standardised CPUE from these vessels to develop an estimate of the amount of catch that could ... assess the sensitivity for assessments of toothfish. Author(s): A. Dunn, B.R. Sharp (New Zealand), C ...
Meeting Document : WG-FSA-13/57 Rev. 1 : Auteur(s): A. Dunn, B.R. Sharp (New Zealand), C. Darby (United Kingdom) and O.R. Godø (Norway)
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Status of WG-SAM reviews of research plans and research proposals and recommendations for streamlining
submitted under CM 24-01. A total of 34 papers was submitted to WG-SAM-15 for review under this agenda item ... , and the lack of time available at the meeting made a meaningful review of each plan infeasible. To ... provide a structure to assist in the review process, WG-SAM requested that proponents compile a self ... -SAM review of research plans and research proposals, and to suggest a potential mechanism for more ...
Meeting Document : WG-FSA-15/14 : Auteur(s): Convener of WG-SAM and Chair of the Scientific Committee
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Considerations about managing the krill fishery at small spatial and temporal scales
Abstract: We discuss a number of ecological issues in relation to CCAMLR’s aspiration for ... detail, and a lot of detail is potentially necessary for managing at these smaller scales. Much of this ... vulnerable habitats. A body of research will be fundamental to understanding how to move beyond the current ... that krill demand from a range of predators in near-shore coastal habitats may only be met through ...
Meeting Document : WG-EMM-2019/22 : Auteur(s): P.N. Trathan, V. Warwick-Evans and E. Young
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On the use of baited remote underwater video to study Antarctic toothfish distribution under the sea-ice: from data collection to processing
Underwater Video (BRUV) allows a solution to this problem. Thanks to the collaboration between New Zealand ... and Italy, from 2015 to 2018 a series of BRUV samplings have been carried out from the fast ice of ... McMurdo Sound and Terra Nova Bay, in the southwestern Ross Sea. Here we report a methodological approach ... to obtain from the videos recorded information on abundance and size distribution related to a series ...
Meeting Document : WG-EMM-2019/50 : Auteur(s): D. Di Blasi, S. Canese, E. Carlig, L. Ghigliotti, S.J. Parker and M. Vacchi
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Summary of the toothfish fishery and tagging program in the Amundsen Sea region (SSRUs 882C–H) to 2018/19
characterisation of the fishery showed a truncation of the right-hand limb of the age distribution between 2004 and ... the ASR be made a priority to develop annual age-length keys and age frequencies. We further recommend ... -year Chapman estimates and allowing a maximum of 20% in the catch limit for 88.2H and research block ... 882_2 are: 882H: 240 t catch and allowing a maximum of 20% change in the catch limit from 200 t ...
Meeting Document : WG-FSA-2019/12 : Auteur(s): J. Devine and S. Parker
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The Secretariat review of the Strategic Plan, associated activities and outcomes
Abstract: At CCAMLR-XXIX, the Commission recommended that a staffing and salary strategy be ... at last year’s meetings of WG-SAM and WG-FSA the Commission adopted a recommendation from the ... Scientific Committee (SC-CAMLR-XXIX, paragraph 14.2) that a review of the Secretariat’s data management ... -EMM with a brief description of the process that has been supported since CCAMLR-XXIX to address these ...
Meeting Document : WG-EMM-11/09 : Auteur(s): Secretariat
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CONSERVING ANTARCTICA FROM THE BOTTOM UP: IMPLEMENTATION OF UN GENERAL ASSEMBLY RESOLUTION 61/105 BY THE COMMISSION FOR THE CONSERVATION OF THE ANTARCTIC MARINE LIVING RESOURCES (CCAMLR)
impacts on vulnerable marine ecosystems (VMEs). In response to this CCAMLR has implemented a series of ... fisheries that interact with the seabed. In addition CCAMLR has and also codified an encounter with a VME ... during fishing operations and the resulting course of action to be taken by a vessel. In the first year ... of implementation 7 areas have been closed to fishing as a result of encounters with VMEs Author(s ...
Meeting Document : WG-FSA-09/45 : Auteur(s): Secretariat
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Preliminary results of the E.L. Holmberg 1994 cruise to Subareas 48.3 and 48.2
Abstract: A total of 63 hauls and 10 oceanographical legs were obtained. Of these, 44 hauls taken ... in Subarea 48.3 on a random stratified des n are used to estimate the standing stocks of the main ... commercial fish species along different methods, as well as their length frequency distributions. A change in ... surface water temperature of about-0.5 to-1.0 in a period of approximately 20 days was detected around ...
Meeting Document : WG-FSA-94/29 : Auteur(s): E.R. Marschoff, B. Prenski, B. Gonzalez, C. Remaggi and C. Balestrini (Argentina)