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Stones in toothfish stomachs: an unusual source of geological information from closed regions of Antarctic shelf and slope
Abstract: The rocks from stomachs of Dissostichus mawsoni were used as a source of geological ... respect, Dissostichus mawsoni may be considered as a «dredge» with a wide area of sampling. Preliminary ...
Meeting Document : WG-FSA-07/58 : Автор(ы): N.V. Kokorin, D.S. Klucharev and M.A. Sukhoruchenkov (Russia)
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PRELIMINARY ASSESSMENT OF TOOTHFISH IN SUBAREA 48.3
lognormal recruitment suggest a long-term yield of 3900 t. Using a recent subset of estimated cohorts ... suggests a lower yield. Author(s): D.J. Agnew and T. Peatman (United Kingdom) Title: PRELIMINARY ...
Meeting Document : WG-FSA-09/28 Rev. 1 : Автор(ы): D.J. Agnew and T. Peatman (United Kingdom)
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Proposal to extend trial of daytime setting of longlines between 15 and 30 April in the Patagonian toothfish longline fishery in CCAMLR Statistical Division 58.5.2
encompass the 2013/14 and 2014/15 fishing seasons. Extending the trial for a further two years will enable ... sufficient daytime fishing effort to occur in the trial period to ensure there is a proper basis for ... assessing whether to allow daytime fishing between 15 and 30 April on a permanent basis. Author(s): J ...
Meeting Document : WG-FSA-13/20 : Автор(ы): J. Barrington and B. Baker (Australia)
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Species profiles: Target species and common by-catch species
Abstract: A project is proposed to provide CCAMLR with a detailed description of all species ... context of international organisations. This paper provides a brief outline of the work proposed, work ...
Meeting Document : WG-FSA-16/51 : Автор(ы): K.-H. Kock, C.D. Jones and D. Welsford
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Stable isotope analysis of Southern Ocean fish tissue samples to investigate trophic linkages of Antarctic toothfish (Dissostichus mawsoni)
to determine C and N stable isotope composition. Values of?15N and?13C suggested that a minimum of ... occupying the highest level. Some Antarctic toothfish sampled in this study occupied a similar trophic level ... data exist (TOA, ANT, CHW, WGR), a stepwise generalised linear model was used to identify significant ... , sex, and depth. Location and a positive relationship with fish length were usually the only variables ...
Meeting Document : WG-EMM-07/19 : Автор(ы): M.H. Pinkerton, S. Bury, S.M. Hanchet and D. Thompson (New Zealand)
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Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data
model outputs of withholding from a stock assessment between one and eight years of age frequency and/or ... tag recapture data. Examining the impact of considering a subset of the available data simulates both ... Subarea 88.2E was used as a sensitivity to examine the impact of withholding data from an assessment based ... on a smaller and shorter data set. In both instances the ‘base case’ model was used, i.e., the models ...
Meeting Document : WG-SAM-11/17 : Автор(ы): S. Mormede (New Zealand)
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Mitigating killer whale depredation on demersal longline fisheries by changing fishing practices
identify fishing practices that could reduce odontocete depredation, with a focus on killer whales (Orcinus ... : the limited number of depredating killer whales (n = 78 in 2012) may induce a dilution effect with ... negatively influenced by, iii) length of longlines: longer sets may provide killer whales access to a greater ... situations elsewhere. To a greater extent, this study is illustrative of how collaborative work with ...
Meeting Document : WG-FSA-14/P03 : Автор(ы): P. Tixier, J. Vacquie Garcia, N. Gasco, G. Duhamel and C. Guinet
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Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longline
Abstract: Depredation is a human-wildlife conflict over resource which often includes a ... indirect methods of assessment of depredated biomass over a 11-year period (from 2003 to 2013), both ... the two species co-occurred around vessels. The second method was new in a way that we used the ... only be implemented when a sufficient level of bycatch species occurs, provides strong support to the ...
Meeting Document : WG-FSA-14/10 : Автор(ы): N. Gasco, P. Tixier, G. Duhamel and C. Guinet (France)
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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 ... environmental conditions that are maintained over a number of years, which includes the effects of global ... can be used to identify changes that have occurred, or changes that may currently be occurring, as a ... CCAMLR’s fishery reports may be revised to include a new section on changes in model parameters and ...
Meeting Document : WG-SAM-18/22 : Автор(ы): M. Pinkerton, A. Dunn, S. Mormede and S. Parker
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Marine classification: lessons from the New Zealand experience
Abstract: New Zealand has a considerable body of experience creating spatial classifications of ... management mandate. This paper considers a range of methodological options for data-driven marine ... ) Generate a classification based on abundance, not presence-absence; 4) Use the most powerful statistical ... methods available, such as BRT and GDM; 5) Use a hierarchical algorithm; 6) Focus on an environment or ...
Meeting Document : WS-BSO-07/6 : Автор(ы): B. Sharp, M. Pinkerton and J. Leathwick (New Zealand)
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