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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H for the years 2002–03 to 2012–13
the revised data selection method (R2), using a logistic selectivity for the northern fishery (R3 ... in 2010, 2011 and 2012 suggest a much lower biomass, and data from tags released from 2004 to 2009 ... suggest an intermediate biomass. The two models (R1 and R2) which estimate a higher biomass are those ... where the age data were more influential. However, these age data are not reliable because a single age ...
Meeting Document : WG-FSA-13/52 : Автор(ы): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Revised continuation proposal of multi-Member research on Patagonian toothfish (Dissostichus eleginoides) exploratory fishery in 2018/19 in Division 58.4.3a by France and Japan
Abstract: France and Japan revised a research plan to continue investigating the populations of ... , para. 3.121). France and Japan commonly notifies their intention to continue their exploratory ... achieve a robust stock assessment. We present here a proposal for the continuation of the research plan as ...
Meeting Document : WG-FSA-18/61 : Автор(ы): Delegations of France and Japan
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Proposal to continue the time series of research surveys to monitor abundance of Antarctic toothfish in the southern Ross Sea, 2016–2017
Abstract: A research proposal to continue the southern Ross Sea sub-adult toothfish survey for ... the relative abundance of sub-adult (<110 cm TL) toothfish in the core strata (A, B, C) in SSRUs ... 88.1J and 88.1L. This is a continuation of the time series of CCAMLR-sponsored research surveys of these ... toothfish in McMurdo Sound following the recommendations of WG-FSA (SC-CAMLR-XXXIII, Annex7, para 5.108) and ...
Meeting Document : WG-SAM-15/45 : Автор(ы): S.M. Hanchet, S.J. Parker, S. Mormede and R.J.C. Currey (New Zealand)
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Report on seabird by-catch outside the CCAMLR Convention Area recorded in the South African fisheries
Seabirds to the north of the Convention Area and the request by IMAF, SC-CAMLR XXVII/15 (Para 4.3) to ... impact on these seabirds. A summary is provided of the recorded number of mortalities for each fishery ...
Meeting Document : WG-IMAF-11/11 : Автор(ы): C. Heineken and P. Mullins (South Africa)
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Spatial aggregation of harvesting in Subarea 48.1, in particular during the summer and close to the coast
ecological or CEMP monitoring in the vicinity. We pose a number of questions, answers to which we believe ...
Meeting Document : WG-EMM-16/17 : Автор(ы): P. Trathan and S. Hill
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Development of an algorithm designed to assess observer data quality and performance
observers in their logbooks. A first version of the algorithm was tested on four randomly selected longline ... fishery logbooks. In its current version the algorithm is able to detect and report invalid data formats ... , as well as value inconsistencies through a limited set of logical tests. For each logbook inspected ... , a text report indicating the locations of faulty entries, a set of figures to display length and ...
Meeting Document : WG-SAM-13/40 : Автор(ы): Secretariat
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Estimation of the biomass of krill in Prydz Bay during January/February 1991 and February/March 1992 using echo integration
break was in general not a region of relatively high krill abundance. The mean surface density of krill ... between 1981 and 1985 (Higginbottom et al. 1988). The biomass of krill in 3.5 milion km2 of the Prydz Bay ... species other than Euphausia superba in the survey areas (Williams et al. 1983; Ikeda et al. 1984,1986 ... ; Hosie et al. 1988) could not be determined. Author(s): I. Higginbottom and T. Pauly (Australia) Title ...
Meeting Document : WG-KRILL-92/23 : Автор(ы): I. Higginbottom and T. Pauly (Australia)
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Light levels experienced by foraging Antarctic fur seals, Arctocephalus gazella
light levels experienced by a diving marine mammal. TDRs were deployed on 10 female Antarctic fur seals ... summer. Depth and light measurements were made during 11 foraging trips which lasted on average (± SE ... ) 7.1 ± 0.7 d. A total of 25657 dives were recorded with a mean dive depth and duration of 18.0 ± 3.6 m ... with depth did not follow a simple exponential decrease as recorded in clear oceanic waters. TDRs ...
Meeting Document : WG-EMM-99/28 : Автор(ы): D.J. McCafferty, I.L. Boyd and T.R. Walker (UnitedKingdom)
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INDICATIVE ESTIMATES OF BIOMASS AND YIELD OF WHITSON’S GRENADIER (M. WHITSONI) ON THE CONTINENTAL SLOPE OF THE ROSS SEA IN SUBAREAS 88.1 AND 88.2
in 2002/03 (CCAMLR-XXI, para 11.53). The bycatch limit for macrourids in Division 58.5.2 had in turn ... been based on the extrapolation of catch rates from a trawl survey of M. carinatus on Banzare Bank. Two ... represented only 25% of the continental slope of the Ross Sea, the data could not be used to calculate a ... macrourid CPUE from the fishery. The uncertainty of the extrapolated biomass was estimated through a ...
Meeting Document : WG-FSA-08/32 : Автор(ы): S.M. Hanchet, D. Fu and A. Dunn (New Zealand)
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Penguin demography and winter distributions in the Antarctic Peninsula region
present a conceptual model linking increasing temperatures and decreasing sea ice cover in the Antarctic ... Peninsula region have increased 4-5°C over the last 50 years (Smith et al. 1996, 1999), affecting the ... ice cover, has profoundly impacted the Antarctic, krill-based food web (Loeb et al. 1997, Smith et al ...
Meeting Document : WG-EMM-01/32 : Автор(ы): W. Trivelpiece and S. Trivelpiece (USA)
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