Résultats de la recherche
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Monitoring and managing the effects of environmental change on toothfish assessments
Abstract: This paper presents a ‘first-step’ proposal for CCAMLR to consider the effects of ... variability (σ R), mean length at age, mean weight at length, natural mortality (m), and maturation ogives ...
Meeting Document : WG-SAM-18/22 : Auteur(s): M. Pinkerton, A. Dunn, S. Mormede and S. Parker
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Proposal for a winter longline survey of Antarctic toothfish in the northern region of Subareas 88.1 and 88.2
further east and north of the CCAMLR Convention Area, which is bounded by latitude 60°S. Obtaining a ... (SPRFMO) area at a similar time. This revised proposal details the catch accounting method proposed by WG ...
Meeting Document : WG-FSA-18/40 : Auteur(s): Delegation of New Zealand
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Estimates of abundance of Dissostichus eleginoides and Champsocephalus gunnari from the random stratified trawl survey in the waters surrounding Heard Island in Division 58.5.2 for 2019
) around Heard Island and McDonald Islands (HIMI) was conducted in CCAMLR Division 58.5.2, with the ... spp. remained at a high level and the estimate for L. squamifrons remained as low as it was for the ...
Meeting Document : WG-FSA-2019/03 : Auteur(s): G.B. Nowara, T.D. Lamb and P. Ziegler
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Continuation of multi-Member research on the Dissostichus mawsoni exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) from 2018/19 to 2021/22
58.4.1 and 58.4.2) began in 2003. Robust stock assessments and catch limits according to CCAMLR decision ...
Meeting Document : WG-FSA-2019/44 : Auteur(s): Delegations of Australia, France, Japan, Republic of Korea and Spain
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CASAL model evaluation incorporating the calculation of harvest rate for D. eleginoides at Division 58.4.4b
submitted by Japan and France (WG-SAM19/08), the CASAL models for Dissostichus eleginoides at Division ... built to assess the stock of D. eleginoides at the research block 1 of Division 58.4.4b. The base model ... catch at age data based on annual ALKs and data sources were weighted using an automatic procedure ... at the block 1 of Division 58.4.4b (Table 1). Changing IUU level (26.5 t to 40 t) in 2009/10 fishing ...
Meeting Document : WG-FSA-2019/62 : Auteur(s): T. Okuda and F. Massiot-Granier
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WG-FSA-SAM-03
tweedie distribution, and random vessel effects: longline fishery for Dissostichus eleginoides in CCAMLR ... area 48.3 S. Candy (Australia) WG-FSA-SAM 03/13 Predicting average weight-at-age from weight-at-length ... and length-at-age models with and without density dependence for Dissostichus eleginoides from the ...
Meeting
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Scientific requirements for an orderly development of the krill fishery
catch limits is in place. (iv) Develop a program to monitor and observe krill catch and by-catch, with ... Abstract: At CCAMLR XXV Australia presented the results of the BROKE-West acoustic krill biomass ... required to be established immediately, however at a minimum there needs to be mechanisms developed to ...
Meeting Document : WG-EMM-07/23 : Auteur(s): A. Constable, G. Slocum and S. Nicol (Australia)
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Update of the integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) for the Heard and McDonald Islands (Division 58.5.2)
updating total removals by sub-fishery and updating catch-at-age and catch-at-length proportions was the ... inclusion of random stratified trawl survey (RSTS) abundance-at-age for 2010 and 2011 and conversion of 2008 ... and 2009 RSTS abundance-at-length to abundance-at-age. This was possible due to the large number of ... otoliths collected and aged for each annual RSTS since 2008. Catch-at-length proportions for the commercial ...
Meeting Document : WG-FSA-11/24 : Auteur(s): S.G. Candy and D.C. Welsford (Australia)
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Estimation of natural mortality using catch-at-age and aged mark-recapture data: a simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation
, CCAMLR Division 58.5.2) Patagonian toothfish (Dissostichus eleginoides) fishery have been unsuccessful ... . An alternative estimation strategy was tested using simulation whereby catch-at-age and aged mark ... for population numbers at age obtained by integrating a first order ordinary differential equation ... estimates of M when all other parameters were fixed at their simulation values. When all parameters were ...
Meeting Document : WG-SAM-10/11 Rev. 1 : Auteur(s): S.G. Candy (Australia)
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Assessment models for Patagonian toothfish in research block 58.4.4b_1 (SSRU 58.4.4bC) for the years 1990-2014
and current biomass were 1060 and 570 tonnes in OB_1b model. The CCAMLR yield was calculated at 51 ... at the estimates of OB_1b model, use of knife edge selectivity at fixed 8 year for disease mortality ... tagging data (OB_1b_notag model) and 5) removal of age observations, and fix of both selectivitties at the ... knife edge selectivity at 8 year for disease mortality in OB_2b model did not reduce the total objective ...
Meeting Document : WG-SAM-15/25 : Auteur(s): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)