Résultats de la recherche
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A descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in the Ross Sea up to 2005/06
Abstract: A descriptive analysis of the toothfish tagging programme carried out in Subareas 88.1 ... and 88.2 since 2001 is presented. The paper updates tag-release and tag-recapture data for fish that ... for non- New Zealand vessels for the first time. However, tag data were only available for all of ... . Tagging rates by area over the past three years have been in the same proportion as the catch by area ...
Meeting Document : WG-FSA-SAM-06/09 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)
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Further investigations in the assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H for the years 2002–03 to 2012–13
Abstract: This paper presents further investigations of the Bayesian sex and age structured ... 88.2C, D, E, F, G, and H (SSRUs 88.2C–H). Annual age-length keys were applied, and the time trends in ... the tag-derived biomass index were investigated. The impact of hypothesised stock structure, fish ... movement, tag mixing and the potential for localised depletion on the stock assessment were also ...
Meeting Document : WG-SAM-14/29 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Results of the Spanish exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in the two previous seasons
Abstract: We addressed the revisions requested by the WG-SAM-14 regarding the results of the ... -SAM-14/09. A summary of the results of the Spanish research that took place in the 58.4.1 division ... during the last two fishing seasons is presented. A prospective estimation of the local biomass (B LOC ... ) of three SSRUs visited using the local depletion method, together with the extrapolation to the total ...
Meeting Document : WG-FSA-14/35 : Auteur(s): R. Sarralde, L.J. López-Abellán and S. Barreiro (Spain)
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Comparing surface and planimetric area across multiple scales and assessing the impact of different data sources on seabed area estimation in research blocks in the CAMLR Convention Area
important for CCAMLR in estimating the fishable biomass of these species in data-poor areas, developing ... surface) within the Convention area are commonly calculated, but surface area (i.e. a three-dimensional ... surface) is rarely estimated. The aims of this paper are to examine differences in: (1) planimetric seabed ... estimates for the same areas using the most up-to-date global bathymetry dataset (GEBCO 2014). Comparisons ...
Meeting Document : WG-SAM-15/01 : Auteur(s): CCAMLR Secretariat
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region for the years 1997–98 to 2014–15
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region (Subareas 88.1 and SSRUs 88.2A–B ... ), using catch, catch-at-age, and tag-recapture data from 1997–98 to 2014–15 and including the results from ... the Ross Sea shelf survey from 2012 to 2015. The model results were similar to the 2013 assessment ...
Meeting Document : WG-FSA-15/38 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Detection of growth zones in the eyestalk of the Antarctic krill Euphausia superba (Dana, 1852) (Euphausiacea)
Abstract: No reliable measures of age currently exist in the Antarctic krill, Euphausia superba ... (Dana, 1852). The eyestalks from 51 individuals were dissected, cut in longitudinal sections and studied ... for identifying growth zones. The krill was collected at the South Orkney Islands during January and ... , each zone consisting of one light and one dark section. The width of the longitudinal sections ...
Meeting Document : WG-EMM-16/P02 : Auteur(s): B.A. Krafft, M. Kvalsund, G. Søvik, E. Farestveit and A.-L. Agnalt
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On acceptable scattering of longlines geo-referencing in the toothfish fishery in the CAMLR Convention Area
Abstract: The issues of longlines geo-referencing during the exploratory fisheries of the ... toothfish in the Convention Area are discussed. Cases of differences in the coordinates of settings and ... haulings are considered. The estimation of the maximum possible variation of the coordinates in the depths ... range of 550-3000 m was performed. It is shown that the differences of coordinates of settings and ...
Meeting Document : WG-SAM-2019/22 : Auteur(s): O. Krasnoborodko
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Report on fishing effort and seabird interactions during the season extension trials in the longline fishery for Patagonian toothfish (Dissostichus eleginoides) in Statistical Division 58.5.2
Abstract: Minimising seabird interactions with longline operations is a key objective of the ... management of fisheries in CCAMLR (see e.g. Conservation Measure CM 25-02 and 41-08). Longline fishing in the ... seabird mitigation measures since the initial fishing season in 2003. Over the years, CCAMLR has agreed to ... add season extensions from 15-30 April and 15 September- 31 October to the core season. In 2015 ...
Meeting Document : WG-FSA-2019/31 : Auteur(s): P. Ziegler, T. Lamb, S. Wotherspoon and J. Dell
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CCAMLR Satellite Overwatch Report (Decision of the Thirty-seventh Meeting of the Commission, paragraph 3.8)
Abstract: This paper contains the report on outcomes of the work carried out by France and, in ... part by the CCAMLR Secretariat, proposed by France at CCAMLR-XXXVII, as endorsed by the Commission. The ... satellite overwatch project involved the receipt of images from target surveillance areas within the ... Convention Area, which were provided from the European Space Agency to the French Fisheries Maritime Control ...
Meeting Document : CCAMLR-38/BG/06 : Auteur(s): Delegation of France and CCAMLR Secretariat
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ESTIMATION OF MANAGEMENT REFERENCE POINTS CONSISTENT WITH THE CATCH TRIGGER LEVEL FOR THE ANTARCTIC KRILL FISHERY IN AREA 48
Abstract: The Generalised Yield Model was used to estimate fishing mortality and spawning stock ... biomass reference points for the krill fishery in CCAMLR Area 48 consistent with the catch trigger level ... analyse the sensitivity of the estimates of the reference points to recruitment variability. The estimates ... of F and SSB reference points for the krill stock in Area 48 consistent with the catch trigger level ...
Meeting Document : WG-EMM-11/17 : Auteur(s): T. Peatman, J. Moir Clark, D.J. Agnew (UK)