Résultats de la recherche
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Information report on the age determination methods of toothfish Dissostichus spp.
Abstract: The document presents the experience of the age determination of toothfish of the genus ... Dissostichus by recording structures (otoliths). Sampling processing is carried out on the basis of annual data ... collected in the CCAMLR Convention Area. The equipment used, the procedure for processing and reading age ... are described. The achieved volumes and results are given. And also the problems that arose and the ...
Meeting Document : WG-SAM-18/29 : Auteur(s): I.V. Slypko and P.M. Zabroda
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Testing the performance of a recompiled version of TrawlCI to calculate confidence intervals of abundance in surveys of Patagonian toothfish (Dissostichus eleginoides) and mackerel icefish (Champsocephalus gunnari)
Abstract: A version of the confidence interval calculating program TrawlCI was recompiled to ... enable it to be run within the DOS emulator of recent versions of the Microsoft Windows operating system ... . The performance of the recompiled version was compared with that of the original version. The ... recompiled version of TrawlCI produced very similar, though not identical, results to the original version ...
Meeting Document : WG-FSA-SAM-05/14 : Auteur(s): T.D. Lamb, W.K. de la Mare and A.J. Constable (Australia)
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Preliminary analyses of data collected during experimental fishing for Patagonian toothfish in international waters of the southwest Indian Ocean (Area 51)
Abstract: Experimental fishing for Patagonian toothfish took place during the period from 28 June ... procedures, in a restricted area south of Madagascar and north of the Prince Edward and Marion Islands and ... the Crozet Islands, and outside EEZ and CCAMLR waters. A total of 57 sets were taken at between 360 ... and 1950 metres depth. The Patagonian toothfish appeared in all those sets carried out with values ...
Meeting Document : WG-FSA-04/19 : Auteur(s): L.J. López Abellán (Spain)
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Age-at-length of Patagonian toothfish from the Falkland/Malvinas Islands
Abstract: To provide an age-length key for use in modelling the age structure of the Patagonian ... toothfish stock around the Falkland Islands, we used otoliths to estimate the age of a sample of 1893 ... Patagonian toothfish (Dissostichus eleginoides) captured by trawl and in the longline fishery. We used a thin ... section grinding machine to reveal a transverse plane through the otolith nucleus and between ...
Meeting Document : WG-FSA-02/74 : Auteur(s): J. Ashford, A. Arkhipkin, C. Jones and S. Bobko
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Supplement to the krill synoptic survey design in Area 48 (with participation of a Russian scientific research vessel)
Abstract: The necessity of synoptic survey covering the South Sandwich Islands that are an ... integral part of Area 48 is discussed. It is shown that in this case there shall be obtained for the first ... time for the recent twenty years the material which allows to have an idea of krill simultaneous ... distribution over the whole water area of Subareas 48.1-48.4 covering a vast zone of krill drift and that of ...
Meeting Document : WG-EMM-99/43 : Auteur(s): V.A. Sushin, S.M. Kasatkina and F.F. Litvinov (Russia)
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Antarctic Climate Change and the Environment – 2011 update
Abstract: This paper is the second update to CCAMLR and the ATCM since the publication of the ... SCAR Antarctic Climate Change and the Environment (ACCE) report (Turner et al., 2009a). The ACCE report ... was a first step in compiling a comprehensive assessment of scientific information on the climate ... system and ecosystem responses to change in the Antarctic and Southern Ocean region. The present paper ...
Meeting Document : CCAMLR-XXX/BG/14 : Auteur(s): Submitted by SCAR
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Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) biomass
Abstract: A large-scale acoustic survey of zooplankton stocks of the waters around South Georgia ... was carried out during November and December 1981. The data have been analysed as a survey using ... various definitions of strata. The total biomass in the area of 155 786 km2 was estimated to be 1.8225 x ... 106 t (Coefficient of Variation = 9.5%). This gives an estimate of mean density throughout the region ...
Meeting Document : WG-KRILL-91/30 : Auteur(s): E. Murphy, I. Everson and A. Murray (United Kingdom)
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PROTECTING THE SOUTHERN OCEAN WHALE SANCTUARY: DEVELOPMENT OF A MANAGEMENT PLAN
Abstract: ASOC submitted a paper to the June meeting of the International Whaling Commission in ... Santiago outlining the reasons why the IWC, in concert with CCAMLR and other appropriate international ... bodies, should develop a Management Plan for the Southern Ocean Whale Sanctuary. This was made available ... as an Opening Statement in accordance with IWC rules. Following the IWC meeting, ASOC prepared an ...
Meeting Document : CCAMLR-XXVII/BG/29 : Auteur(s): Submitted by ASOC
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AN UPDATED DESCRIPTION AND PARAMETERISATION OF THE SPATIAL MULTI-SPECIES OPERATING MODEL (SMOM )
Abstract: An updated version of the Spatial Multi-species Operating Model (SMOM) of krill ... advice regarding the subdivision of the precautionary catch limit for krill among 15 small-scale ... management units (SSMUs) in the Scotia Sea, to reduce the potential impact of fishing on land-based predators ... . The model includes krill as prey and four predator groups (penguins, seals, fish and whales) in each ...
Meeting Document : WG-SAM-08/17 : Auteur(s): É.E. Plagányi and D.S. Butterworth (South Africa)
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Conditions for the precise measurement of fish target strength in situ
studied and two indexes are introduced for this purpose. One is the number of fish in the effective ... reverberation volume which contributes echo formation at a certain instant and the other is the percentage of ... the multiple echoes which is derived from a residual of the single echo extraction. With the decrease ... reliable from the past study. This shows the existence of some threshold values and below these threshold ...
Meeting Document : WG-Krill-94/35 : Auteur(s): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA)