Résultats de la recherche
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Recommendation for an explicit limit reference point for the mackerel icefish (Champsocephalus gunnari) fishery in CCAMLR Statistical Division 58.5.2
Abstract: Large fluctuations in abundance are a persistent feature of the populations of mackerel ... . Australia recommends the development of a limit reference point, such that the commercial catch limit for ... completed. In years with a zero commercial catch limit, a combined bycatch and research catch limit of 30 ... tonnes would allow the continued monitoring of the stock through annual trawl surveys. Australia ...
Meeting Document : WG-FSA-11/34 : Auteur(s): Delegation of Australia
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ADULT ANTARCTIC KRILL FEEDING AT ABYSSAL DEPTHS
bulk of the population of postlarval krill is typically confined to the top 150 m of the water column ... . Here, we report for the first time the existence of significant numbers of Antarctic krill feeding ... operated vehicle Isis in the austral summer of 2006/07 have revealed the presence of adult krill (Euphausia ... locations there were exuviae (cast molts). These observations revise significantly our understanding of the ...
Meeting Document : WG-EMM-08/P01 : Auteur(s): A. Clarke and P.A. Tyler
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Updated progress report on the research fishery for Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa: 2012/13 and 2013/14
the 2012/13 season and the first seven months of the 2013/14 season are reported. This paper updates ... and replaces WG-SAM-14/10. Over the first 19 months of the Research fishery a total of 279 ... recaptured. Even though almost 50% of the recaptures are within season the progress in the northern section ... of Subarea 48.6 is encouraging. By the end of the 2014/15 fishing season there should be sufficient ...
Meeting Document : WG-FSA-14/67 : Auteur(s): R. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)
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Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic
). Demersal longlines, targeting Patagonian toothfish (Dissostichus eleginoides), were deployed in depths of ... most abundant marine mammal observed in the vicinity of vessels when lines were being hauled, being ... present during 24% of hauling observations. Killer whales, the second most frequently sighted cetacean ... , were present during 5% of haul observations. A high inter-vessel variation was noted for interactions ... – martinpurves@telkomsa.net D.J. Agnew Renewable Resources Assessment Group Imperial College, Royal School of ... longlines, targeting Patagonian toothfi sh (Dissostichus eleginoides), were deployed in depths of 169 to 2 ... abundant marine mammal observed in the vicinity of vessels when lines were being hauled, being present ... during 24% of hauling observations. Killer whales, the second most frequently sighted cetacean, were ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Auteur(s): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins
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Krill conversion factors
of different krill products are examined and a range of values produced. These are broadly in line ... with those currently in use although the differences are such that use of the traditional factors may ... introduce large errors into the estimation of removals. It is uncertain whether discarding is a common ... practice in the fishery, if it is then the use of any of the conversion factors will result in a serious ...
Meeting Document : WG-EMM-01/39 : Auteur(s): I. Everson (United Kingdom)
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Possible approach to krill movement estimation by hydroacoustic observations
Abstract: Method of estimation of krill drift velocity in water current,using repeated acoustic ... transects on rectangular polygon is discribed.Dimensions of polygon and frequency of acoustic observations ... have to be determined with taking into account distribution patterns of krill,its patchiness, between ... speed-8 knots,mean BSD-5km,mean BCD-6.3 km dimensions of polygon must be 10 12 km and discretness of ...
Meeting Document : WG-KRILL-91/28 : Auteur(s): P.P. Fedulov (USSR)
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Factors to consider in developing management measures for krill
Abstract: A brief review of the objectives of the Convention for the Conservation of Antarctic ... Marine Living Resources is given along with an outline of for the evolution of management procedures for ... krill fisheries. Various possible elements of procedures such as reactive, predictive, and feedback ... management, modelling, indicator species, pulse fishing, and the use of open and closed areas and seasons are ...
Meeting Document : WG-KRILL-90/14 : Auteur(s): W.K. de la Mare (Australia)
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Groupe de travail sur les méthodes d'évaluation acoustique et d'analyse (WG-ASAM)
to hydroacoustic surveys of Antarctic krill. Each of the meetings of the sub-group have had specific ... terms of reference from the Scientific Committee as a result of a specific issue where expert evaluation ... of acoustic techniques has been required. In 2019 it became a full working group: WG-ASAM (SC-CAMLR ... (United Kingdom) and Dr Xinliang Wang (China). A list of the meetings (including reports) is available ...
Page : Site Section: Science
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Krill biomass and density distribution in February–March 2002 in Subarea 48.3
Abstract: Presented are the results of krill acoustic survey carried out by Russian RV Atlantida ... total biomass at 1,898,492 ton. The analysis of krill aggregation distribution was made for ... identification of potential fishing grounds. Also presented are the results of density assessment on potential ... fishing grounds and a map of their location. Location of potential fishing areas is still another evidence ...
Meeting Document : WG-EMM-03/30 : Auteur(s): S.M. Kasatkina and A.P. Malyshko (Russia)
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Longliners, black-browed albatross mortality and bait scavenging in the Falkland Islands: what is the relationship?
Abstract: The rate of foraging attempts by black–browed albatross on baited hooks during Spanish ... -system (demersal) longline setting operations, and a range of environmental and operational variables ... . Logistic regression highlighted that a complex range of environmental and operational variables and black ... , examined over a relatively short time period with minimal environmental variation, the rate of black-browed ...
Meeting Document : WG-FSA-03/92 : Auteur(s): T.A. Reid and B.J. Sullivan (United Kingdom)