Résultats de la recherche
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The Status of the Champsocephalus gunnari Stock in the South Georgia Area
Abstract: This study focuses on the Chamsocephahus gunnari stock around South Georgia. The ... the relationship between the spawning stock and number of recruits. A conventional VPA and an ad hoc ... tuning method are used to estimate biomass levels and fishing mortality for the period 1971/72 to 1988/89 ... . VPA-estimates of recruitment levels are used to investigate the degree of variability and the likely ...
Meeting Document : WG-FSA-89/8 Rev. 1 : Auteur(s): M. Basson, J. Beddington (United Kingdom) and W. Ślósarczyk (Poland)
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Pairwise tag performance: testing the sensitivity of the tag detection index and the mortality of tagged fish index
developed in 2012 and further developed in 2013, using a methodology which controls for the spatial and ... all other fishing events which occurred in the same time and place (i.e. within a specific distance ... and in the same fishing season). The method showed that when the confounding effects of variable ... with respect to the tag detection index in the Ross Sea region. Here we present the results of ...
Meeting Document : WG-FSA-13/50 : Auteur(s): S. Mormede (New Zealand)
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Analysis of inter-vessel variability of krill length distribution in the catches obtained in the fishery in the Bransfield Strait (Subarea 48.1)
Abstract: The inter-vessel variability of krill distribution in the catches obtained in the ... Bransfield Strait (SSMU APBSW and APBSE) in April and May 2014 and 2015 was analyzed. The presence of ... statistically significant differences in the krill length distributions from catches obtained by the vessels ... operating in the fishing grounds with spatio-temporal overlapping is shown. At the same time, significant ...
Meeting Document : WG-EMM-17/28 : Auteur(s): S. Kasatkina
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2018 – Reflection on the recommendations by WG-EMM-17 and SC-CAMLR-XXXVI
Abstract: The CAMLR Scientific Committee in 2017 reviewed the scientific background document SC ... -CAMLR- XXXVI/BG/28. Germany was asked to carry out further work, in particular as regards the issues and ... questions raised at WG-EMM-17 and SC-CAMLR-XXXVI with respect to the WSMPA proposal (SC-CAMLR-XXXVI, Annex 6 ... , §§ 5.1-5.14). Chapter 1 reflects on the recommendations concerning the suitability of some data layers ...
Meeting Document : WS-SM-18/13 : Auteur(s): K. Teschke, H. Pehlke and T. Brey
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Reports on abundance and biological information of toothfish in Division 58.4.3b by Shinsei Maru No.3 in the 2010/11 and proposal of the consecutive survey in the 2011/12
Abstract: In accordance with the Conservation Measure 41-07 (2010), a survey was conducted in ... order to collect information for the stock status and biology of toothfish in the southeast sector (24 ... released alive) of Dissostichus spp. and other bycatch species was 12.0 tonnes in the SE sector, where the ... catch limit of 15 tonnes was set. Dissostichus spp. made up 90.3 % in terms of weight of the whole fish ...
Meeting Document : WG-SAM-11/05 : Auteur(s): K. Taki, T. Iwami and M. Kiyota (Japan)
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Convener’s summary on intersessional activities of the Subgroup for the Implementation of the CCAMLR-2008-IPY-Survey
Abstract: At its last meeting in October 2004 the Scientific Committee agreed that a synoptic ... acoustic survey in the South Atlantic region would be the most appropriate activity for CCAMLR in the IPY ... 2008. It was agreed that a synoptic acoustic/net sampling survey in the South Atlantic region should ... observations on marine zooplankton, marine mammals and birds. The Scientific Committee has established an ...
Meeting Document : SC-CAMLR-XXIV/BG/02 Rev. 1 : Auteur(s): V. Siegel (Convener, Steering Group ‘CCAMLR-2008-IPY-Survey’)
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Progress on the application of an age-structured production model fitted to commercial catch-rate and catch-at-length data to assess the toothfish (Dissostichus eleginoides) resource in the Prince Edward Island vicinity
Abstract: The Age-Structured Production Model (ASPM) presented to previous meetings is refined to ... allow the estimation of a selectivity-at-age function that decreases at larger ages. This is, in ... particular, to accommodate the view of the August 2003 meeting of the Subgroup on assessment methods that 0.2 ... yr-1 is likely the largest value of natural mortality M that is plausible for toothfish. Catch, catch ...
Meeting Document : WG-FSA-03/97 : Auteur(s): A. Brandão and D.S. Butterworth (South Africa)
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Effects of the Antarctic Circumpolar Current on fishing for squid (Illex Argentinus) in the Atlantic sector of the Southern Ocean
Abstract: The paper introduces several approaches to assessment of hydrological situation in the ... Atlantic sector of the Southern Ocean (the South-West Atlantic). The analysis of the SST maps suggests that ... hydrological factors depend on the intensity of two currents, the Antarctic Circumpolar Current and the ... Falkland current The paper shows correlation between a certain hydrological situation and fishing for squid ...
Meeting Document : WG-EMM-99/15 : Auteur(s): G.P. Vanyushin and T.B. Barkanova (Russia)
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The influence of environmental variables and mitigation measures on seabird catch rates in the Japanese tuna longline fishery within the Australian Fishing Zone, 1991–1995
Abstract: Long term fisheries observer data were used to analyse the influence of a range of ... environmental variables and mitigation measures upon catch rates of seabirds in the Japanese pelagic longline ... fishery. In the Australian Fishing Zone (AFZ) seabirds were most likely to be caught on longlines that ... were set during summer, in southern areas of the zone, and during daylight hours. However ...
Meeting Document : WG-FSA-98/32 : Auteur(s): N. Brothers, R. Gales and T. Reid (Australia)
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A proposed process for the management of model updates and software versions for stock assessment used within CCAMLR with the example of the CASAL software
Abstract: We propose a process by which to select the version of software generally used for ... stock assessments in CCAMLR, with the specific example of the CASAL software used for stock assessment ... . The latest published version of any stock assessment software approved by CCAMLR should be used by ... default, unless the latest development version is necessary, in which case it is the responsibility of the ...
Meeting Document : WG-SAM-14/32 : Auteur(s): S. Mormede and A. Dunn (New Zealand)