Search results
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Investigating the uncertainty of age determinations for Patagonian toothfish (Dissostichus eleginoides) and the implications for stock assessment
Abstract: We revised the method of Candy et al. (2012) to estimate the ageing error matrix ... (misclassification matrix) to address some issues regarding true ages not being the mode at the extremes of the ... matrix and a lack of smoothness in the probabilities for ages above 25 years. Positive errors now ... greater than the plus group are incorporated into the final row of the misclassification matrix. We ...
Meeting Document : WG-FSA-14/46 : Author(s): P. Burch, P. Ziegler, W. de la Mare and D. Welsford (Australia)
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Informing the Working Group on Fish Stock Assessment about the revisions of the WSMPA proposal
Abstract: Following the submission of a first draft Conservation Measure for establishing a MPA ... proposal, which would fall under the remit of, or might be of interest to participants at FSA 2018 ... coast of the Antarctic Peninsula; Adjustment of the habitat of adult Antarctic toothfish in Statistical ... Subareas 48.6 and 48.5 because of further analyses and modelling of the habitat of adult Antarctic ...
Meeting Document : WG-FSA-18/08 Rev. 1 : Author(s): S. Hain, K. Teschke, H. Pehlke and T. Brey on behalf of the German Weddell Sea MPA project team
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A proposal to review and strengthen the CCAMLR System of Inspection
Abstract: The CCAMLR System of Inspection was adopted in 1988 at a time when few such schemes ... existed and well before the challenges of large scale IUU fishing for toothfish. Since then, the ... Commission has progressively adopted a wide range of stronger and innovative conservation measures to combat ... of efforts to eliminate IUU fishing, Australia proposes that the Commission review its System of ...
Meeting Document : CCAMLR-XXVI/29 Rev. 1 : Author(s): Delegation of Australia
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Report on attendance at the Seventh Meeting of the Committee for Environmental Protection under the Madrid Protocol
Abstract: This report outlines the participation of the SC-CAMLR Chair in the Seventh Meeting of ... issues of relevance to SC-CAMLR are: (a) The CEP again addressed the issue of establishing ‘Specially ... components of the revised text on which there was no agreement about the technical or legal nature of the ... text. (b) The CEP’s Intercessional Contact Group (ICG) on the State of the Antarctic Environment ...
Meeting Document : CCAMLR-XXIII/BG/07 : Author(s): Chair of the CCAMLR Scientific Committee
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Is our attempt to estimate biomass of Antarctic fish from a multi-species survey appropriate for all targeted species? Notothenia rossii in the Atlantic Ocean sector – revisited
Abstract: Notothenia rossii was the first target species of the fishery in the Southern Ocean ... . The species has been heavily fished at the beginning of the 1970’s. The closure of the fishery for ... this species was one of the first conservation measures CCAMLR adopted in 1985. Fish biomass within a ... CCAMLR Subarea or part of a subarea is commonly estimated targeting a number of species including N ...
Meeting Document : WG-FSA-03/12 : Author(s): K.-H. Kock (Germany), M. Belchier (United Kingdom) and C.D. Jones (USA)
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Management of C. gunnari in Subarea 48.3
Abstract: The management of Champsocephalus gunnari at South Georgia is complicated by the ... likelihood of substantial periodic variation in natural mortality rates. These may be associated with ... increased consumption of icefish by Antarctic fur seals in years of poor krill availability. Thus natural ... mortality of icefish may, in some years, increase by a large factor (assumed here to be 4) declining to ...
Meeting Document : WG-FSA-97/38 : Author(s): Kirkwood, G.P., Parkes, G.B., Everson, I., Agnew, D.J.
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Oceanography of the South Georgia and South Orkney Islands regions using high-resolution models
productive, supporting large colonies of higher predators, and with a history of commercial exploitation ... . Many of the key oceanographic and ecological processes determining the operation of these marine ... ecosystems operate over small spatial scales of <10 km. Understanding the drivers of variability in such ... processes requires the development of high-resolution ocean models. Here we describe the development of ...
Meeting Document : WG-EMM-17/30 : Author(s): E. Young, E. Murphy and P. Trathan
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On selectivity of commercial and research trawls when krill catching
Abstract: In the paper the attempt was made to compare selective features of several midwater ... krill trawls within the frame of krill density precise estimates provision problem in echo-surveys. The ... results of fishing one krill aggregation with two types of trawls (PT 72/308 commercial trawl and Isaacs ... -Kidd research trawl IKTM) are presented. Selectivity differences of those trawls resulted in ...
Meeting Document : WG-EMM-96/34 : Author(s): Kasatkina, S.M.
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The morphology of Antarctic toothfish (Dissostichus mawsoni Norman 1937) males and females and new data on its gonad structure in the Ross Sea in the summer period
Abstract: The results of the histological analysis of the Antarctic toothfish (Dissostichus ... 88.2 of the Ross Sea are presented. The morphological parameters and indices of maturity have been ... described. The histological criteria of the assessment of the ovary maturity stages, cytological parameters ... of oocytes and type of the toothfish oogenesis have been determined. The analysis of the histological ...
Meeting Document : WG-FSA-07/38 Rev. 2 : Author(s): S.V. Piyanova and N.V. Kokorin (Russia)
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Fishes incidentally caught by Japanese Antarctic krill commercial fishery to the north of the South Shetland Islands during the 1994/95 austral summer
Abstract: Observations on abundance of by-catch fishes were made during the austral summer months ... of 1995 (from 30 January to 18 February) on board F/V Niitaka Maru to the north of the South Shetland ... Islands. Among 78 hauls examined, a total of 97 specimens of fishes belonging to five species, Electrona ... sample of 50 kg of krill. Number of by-catch fishes ranged from 0 to 50 per 100 kg of krill catch and ...
Meeting Document : WG-EMM-95/56 : Author(s): Iwami, T.