Résultats de la recherche
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Seasonal and inter-annual variability in the distribution of Electrona carlsbergi in the southern Polar Front area (the area to the north of South Georgia is used as an example)
. Very few species, however, form large and dense concentrations and their distribution tends to be ... found at similar depths (100 to 450 m) both during the day and at night. It should be noted that during ... can also be substantial in the other seasons (500 to 1 100 X 103 tonnes). Acoustic assessments of E ... be concentrated in the epipelagic zone in summer and the mesopelagic zone in spring and autumn ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 337–367 : Auteur(s): Kozlov, A.N., K.V. Shust and A.V. Zemsky
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Revised reports on abundance and biological information of toothfish in Division 58.4.3b by Shinsei Maru No.3 in 2010/11 and proposal of the consecutive survey in 2011/12
area was estimated to be 174-175 ton, using CPUE x area and CPUE comparison methods. From this, the ... appropriate sample size in the next year survey was calculated to be 5.2 ton based on the criterion for the ... depleted stock shown in WG-FSA-10/42. However, the estimated biomasses using the two methods seem to be a ...
Meeting Document : WG-FSA-11/13 Rev. 1 : Auteur(s): K. Taki, T. Iwami and M. Kiyota (Japan)
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OPTIONS FOR USING UNREPLICATED ECOSYSTEM MONITORING DATA TO DETECT IMPACTS
. Furthermore, CEMP data cannot be used in a standard environmental impact assessment framework as they lack ... control sites. Identifying how these data could be used in an ecosystem management strategy is therefore ... indicators with several (moderate and extreme) reference points and that the response to an impact should be ...
Meeting Document : WG-EMM-09/26 : Auteur(s): S. Hill, J. Forcada, P. Trathan and C. Waluda (United Kingdom)
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Assessments of by-catch in trawl fisheries at Heard and MacDonald Islands
results indicate that the current commercial trawl fisheries around Heard Island are unlikely to be ... toothfish while protecting the by-catch species from excessive fishing effort, the by-catch rule could be ... . However, if this level is exceeded by any one of the by-catch species then the 5% rule should be enforced ...
Meeting Document : WG-FSA-97/30 : Auteur(s): de la Mare, W.K., Williams, R., Constable, A.
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Further development of coarse- and medium-scale spatially explicit population dynamics operating models for Antarctic toothfish in the Ross Sea region
and medium-scale spatial resolution and consider scenarios where abundance can be present over the ... explicit manner. Models can be parameterised by both population processes (i.e., ageing, recruitment, and ... proportions-at-age catch data were less than ideal. Model estimates of proportions-mature appeared to be ...
Meeting Document : WG-FSA-12/44 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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Investigating emigration in stock assessment models of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H
, emigration can be mimicked by treating it either as a constant biomass of removals or as an additional ... . Clearly, the steep decline in the recapture rates of a cohort of tagged fish through time cannot be ... area may be required to model both immigration into SSRU 88.2H and the subsequent emigration back to ...
Meeting Document : WG-FSA-14/56 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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A method for spreading the risk of localised effects of catches of Antarctic krill up to the trigger level, during the development of stage 2 of feedback management
the trigger level that ensured that krill predators “ would not be inadvertently and ... disproportionately affected by fishing activity”. CM 51-07 is to be “ reviewed in 2016 with the intent of ensuring ... conservation measure are approximately the right magnitude, although there may be justification for setting the ...
Meeting Document : WG-EMM-16/69 : Auteur(s): A.J. Constable, S. Kawaguchi and M. Sumner
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Revised proposal for the ongoing research plan on Patagonian toothfish (Dissostichus eleginoides) in Division 58.4.4b (2016/17–2020/21)
research survey capacity. Toothfish population structure and bycatch analyses will be presented at WG-FSA ... milestones will be completed and reported to CCAMLR working groups was provided and a final report will be ...
Meeting Document : WG-SAM-2019/08 : Auteur(s): Delegations of Japan and France
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Principles for evaluating data collection plans in data-poor exploratory fisheries
Abstract: Since 1992, CCAMLR has agreed that exploratory fishing is not to be allowed to expand ... faster than the acquisition of information necessary to ensure that the fishery can and will be conducted ...
Meeting Document : WG-SAM-11/08 : Auteur(s): P.E. Ziegler, D.C. Welsford and A.J. Constable (Australia)
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Results of the tagging experiment for (D. eleginoides) in Subarea 48.4, 2007 update
the mark-recapture experiment in Subarea 48.4 in 2007/08. Initial estimates of population size will be ... may need to be extended for a few more years. Author(s): J. Roberts and D.J. Agnew (United Kingdom ...
Meeting Document : WG-FSA-07/32 : Auteur(s): J. Roberts and D.J. Agnew (United Kingdom)