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Measures to avoid bias in abundance estimates of Dissostichus spp. based on tag-recapture data
Abstract: Using the simplest form of an abundance estimator using tag-recapture data, the Lincoln ... difficulty in accurately estimating key parameters, and consequently introduce bias into an abundance ... against this bias, or to account for their effects in assessment models. In nearly all cases, examples of ... depredation rates are a priority for new tagging programs and tag-based assessments. Due to the complexity of ...
Meeting Document : WG-SAM-12/23 : Автор(ы): D.C. Welsford and P.E. Ziegler (Australia)
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Monitoring and managing the effects of environmental change on toothfish assessments
, including stock distribution (for example, for its impact on tagged fish distribution or research survey ... Abstract: This paper presents a ‘first-step’ proposal for CCAMLR to consider the effects of ... environmental variability and change on management advice from toothfish assessments. We focus on changes to ... environmental conditions that are maintained over a number of years, which includes the effects of global ...
Meeting Document : WG-SAM-18/22 : Автор(ы): M. Pinkerton, A. Dunn, S. Mormede and S. Parker
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On assessing the size of the humped rockcod stock (Notothenia gibberifrons) in Subarea 48.3
Abstract: An adaptive approach was used to assess the Notothenia gibberifrons stock in Area 48.3 ... imperative to estimate the catchability coefficient. This parameter was equal to 0.326 to 0.635. An adaptive ... logarithms of observed and calculated biomass indices and resulted in an estimate of from 21.5 to 42.1 ... thousand tonnes for N. gibberifrons biomass in the 1989/90 season. It is thus possible to suggest a TAC of ...
Meeting Document : WG-FSA-91/26 : Автор(ы): P.S. Gasiukov (USSR)
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Foraging areas of black-browed and grey-headed albatrosses breeding on Macquarie Island in relation to marine protected areas
breeding on the Island. 3. During late incubation and brood periods over 90% of time spent foraging by ... Exclusion Zone around Macquarie Island. In contrast, grey-headed albatrosses (T. chrysostoma) spent on only ... 34 % of their time foraging in MPAs. 4. Black-browed and grey-headed albatrosses spent 30 % and 15 ... for 5% and 12% of the total foraging time respectively. 6. There was significant spatial overlap in ...
Meeting Document : WG-FSA-04/49 : Автор(ы): A. Terauds, R. Gales, G.B. Baker and R. Alderman (Australia)
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Population structure of the Antarctic toothfish, Dissostichus mawsoni from the Areas 58 and 88 in the Antarctic Ocean based on mitochondrial and microsatellite DNA markers
localities from the two main Subareas 88 and 58, based on a combined analysis of mitochondrial DNA (mtDNA ... efforts on the stock (unit) management for this valuable fishery resource. Author(s): H.-K. Choi, J.E ... around the Antarctic Continent since 1997, managed solely by the Commission for the Conservation of ... crucial for improving fishery management of this species, the number of populations or stocks of D ...
Meeting Document : WG-FSA-2019/36 : Автор(ы): H.-K. Choi, J.E. Jang, S.Y. Byeon, S. Chung, S.-G. Choi, H. W. Kim and H.J. Lee
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Further calculations of the effects of krill fishing on predators
resilience of the albatross population to the effects of a krill fishery. An approach for estimating the ... situation where predator survival rates depend on other factors in addition to krill biomass. This is ... achieved by making the survival rates depend instead on krill "availability", where there is a ... random component in the relationship between krill biomass and availability. An examination of the ...
Meeting Document : WG-Krill-94/24 : Автор(ы): D.S. Butterworth and R.B. Thomson (South Africa)
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SC-CAMLR-38
Schedule for the Thirty-eighth Meetings of the Commission and the Scientific Committee До прибытия ...
Meeting
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On cooperation with UNEP (copies of correspondence)
Author(s): Secretariat Title: On cooperation with UNEP (copies of correspondence) Approval ...
Meeting Document : SC-CAMLR-XVIII/BG/20 : Автор(ы): Secretariat
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Invitation to the Second CCAMLR Technical Workshop on the Development of MPAs in Domain 1
Workshop on the Development of MPAs in Domain 1 Approval: Approved ...
Meeting Document : SC-CAMLR-XXXIII/BG/20 : Автор(ы): Delegations of Argentina and Chile
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Estimating the level of illegal fishing using simulated scaling methods on detected activity
dynamics, particularly evasion tactics, will be necessary to devise an observation strategy for estimating ... account. An important consideration for the future will be the inevitable tension for fishery patrol ... whether the method for estimating catches from illegal, unregulated or unreported (IUU) fishing developed ... by Agnew and Kirkwood (2002) for Subarea 48.3 could be applied to other CCAMLR areas (SC-CAMLR-XXII ...
Meeting Document : WG-FSA-SAM-04/14 : Автор(ы): Ball, I.
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