Résultats de la recherche
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Further development of pairwise tag detection performance index and its application to the stock assessment of toothfish in the Ross Sea fishery
Abstract: Tag release and recapture data are used in integrated age-structured stock assessments ... of Antarctic toothfish (Dissostichus mawsoni) in Subareas 88.1 and 88.2 to determine abundance and ... ) could lead to an over-estimate of the stock biomass. In this paper we develop further an index of vessel ... subset of vessels for which there is confidence in their tag-recapture data. Finally, we apply these ...
Meeting Document : WG-SAM-13/34 : Auteur(s): S. Mormede (New Zealand)
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Catches of target species in the Convention Area
Abstract: Summary of catches from directed fishing on toothfish, icefish and krill in the ... Convention Area in 2014/15 and 2015/16, including catches taken during scientific surveys conducted in ... accordance with Conservation Measure 24-01. Catches reported in 2014/15 were published in the CCAMLR ... in 2015/16 are also summarised. Author(s): CCAMLR Secretariat Title: Catches of target species in ...
Meeting Document : SC-CAMLR-XXXV/BG/01 : Auteur(s): CCAMLR Secretariat
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The Norwegian SWARM project: from swarming behaviour to trophic interactions: modelling dynamics of Antarctic krill in ecosystem hotspots using behaviour-based models
Abstract: Norway is in the process of extending its monitoring efforts in the area around South ... Orkneys by deploying acoustic moorings in a commercially exploited area. Data gathered from the moorings ... will be used to parametrise models, in order to gain better understanding of the interaction between ... ocean physics and behaviour in driving krill biomass variation in the area. Author(s): T.A. Klevjer, G ...
Meeting Document : WG-EMM-17/26 : Auteur(s): T.A. Klevjer, G. Rieucau, A.H.H. Renner, G. Skaret and O.R. Godø
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The toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2002/03: New Zealand vessel summary
Abstract: An exploratory fishery for Antarctic toothfish (D. mawsoni) has been in operation for ... six seasons in Subarea 88.1 and for two seasons in Subarea 88.2. A large amount of data on both ... is to present the analysis of data collected in the toothfish fishery for the 2003 season (this is ... presence of the huge C2 iceberg severely altered the fisher's behaviour in 2003. The vessels were ...
Meeting Document : WG-FSA-03/44 : Auteur(s): M.L. Stevenson, S.M. Hanchet and P.L. Horn (New Zealand)
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Descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 & 88.2 for the years 2000–01 to 2010–11
Abstract: Descriptive analyses of the toothfish tagging programme in Subareas 88.1 and 88.2 are ... recaptured since 2001. In recent years, most vessels have achieved or exceeded the target tagging rate of one ... toothfish per tonne of catch in the Ross Sea region. Tag recapture data showed that most fish are recorded ... one to SSRU 88.1I. In addition, several fish moved long distances on the slope and the shelf, with ...
Meeting Document : WG-FSA-11/46 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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New corrections factors for the quantification of fish represented in pellets of the blue-eyed shag Phalacrocorax atriceps
necessary for the quantification of fish represented in pellets. These factors were obtained for Notothenia ... , Notolepis coatsi and Electrona antarctica were represented in pellets but not found in the stomach contents ... . Fish were the main prey and N. coriiceps and H. antarcticus were the dominant species both in mass and ... number. Observations on behaviour showed that the daily foraging trips per bird increased in number but ...
Meeting Document : WG-EMM-95/83 : Auteur(s): Silva, P., Casaux, R., Favero, M., Barrera-Oro, E.
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Preliminary model of krill fishery behaviour in Subarea 48.1
fishery in Subarea 48.1 and estimates the effort applied and the catch of krill in fine-scale squares ... March, compare favourably with the general distribution of catches in Subarea 48.1. A number of ... the management option of closing the zones around Livingston and Elephant Islands in alternate years ... would result in an average yearly catch similar to that at present, although the catch is much more ...
Meeting Document : WG-KRILL-93/14 : Auteur(s): D.J. Agnew (Secretariat)
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Declining trend in the abundance of fjord fish of the species Notothenia rossii marmorata and Notothenia gibberifrons observed at two localities of South Shetland Islands
Abstract: A declining trend observed in the abundance of fjord fish of the species Notothenia ... nets at Potter Cove, King George/25 de Mayo I., from 1983 to 1990 and in waters around Half-Moon I ... ., Moon Bay, in 1989. The analysis was based on the proportion of catches of the mentioned species in ... relation to Notothenia neglecta, a species with similar ecological habits in the fjords. Comparison with ...
Meeting Document : WG-FSA-90/14 : Auteur(s): E. Barrera-Oro and E. Marschoff (Argentina)
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Towards the development of a stock assessment for Patagonian toothfish in Division 58.4.4, SSRU C on Ob and Lena Banks
Abstract: Following the advice from the CCAMLR Working Group in WG-SAM in 2012, a preliminary ... assessment of stock status of D. eleginoides in SSRU C in Ob-Lena Banks was made using a CASAL catch-at ... -length model. In this preliminary assessment, the model was started in 1990 and catch, proportions at ... length in the catch, and recapture data from SSRU C from 2007/08 to 2011/12 were fitted in the model. The ...
Meeting Document : WG-FSA-12/59 : Auteur(s): K. Taki (Japan)
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Revised stock assessment of the Patagonian toothfish, Dissostichus eleginoides, in research block C of Division 58.4.4 (Ob & Lena Banks) using CASAL
fishing, CCAMLR decided to close the fishery in 2002 in division 58.4.4. Since 2008 only one vessel ... , Shinsei maru No. 3, has conducted research fishing in accordance with a research plan submitted under CM ... 24-01. France notifies its wish to collaborate in this research fishery over the coming years in ... order to participate in the tagging program and achieve a robust stock assessment. A preliminary ...
Meeting Document : WG-FSA-14/06 : Auteur(s): A. Rélot-Stirnemann (France)