Resultados de la búsqueda
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Preliminary tag-recapture based population assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 48.4
Abstract: The biomass of Antarctic toothfish (D. mawsoni) in CCAMLR subarea 48.4 is estimated ... 1187 tonnes. Applying the CCAMLR agreed precautionary assumption of average biomass across the time ... series and harvest rate of γ = 0.038, implies a 2019/20 yield of 45 tonnes using the 5-year average ... biomass. Historically, a precautionary approach has been applied in treating the 48.4 Antarctic toothfish ...
Meeting Document : WG-FSA-2019/27 : Autor(es): T. Earl and A. Riley
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Signy Island, South Orkney Islands 2000/01
Abstract: The results of the fifth annual survey of entanglement of Antarctic fur seals at Signy ... Island, South Orkney Islands are reported for the 2000/2001 summer season. This is the first year in ... which there were no sightings of seals with neck collars of man-made debris. Data are compared with ... Island, these indicated that the number of entangled fur seals had increased (by57%) compared to the ...
Meeting Document : SC-CAMLR-XX/BG/04 : Autor(es): Delegation of the United Kingdom
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Seabird by-catch and bait loss in longlining using different setting methods
scarer, but not by using the setting funnel. No increase in the catches of target species was ... killed, while the associated bait loss may have serious impact on longlining efficiency and profitability ... a setting funnel that guided the baited line beneath the sea surface or when using a sea-bird ... scaring device. Bait loss and the catches of target species and sea birds were compared with those of ...
Meeting Document : WG-FSA-96/06 : Autor(es): Løkkeborg, S.
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Peches exploratoires dans la sous-zone 58.6, resultats des campagnes 1983 a 1995
only one Nototheniid fish Dissostichus eleginoides. The other species have no future for a commercial ... Abstract: Exporatory fishing with bottom trawl conducted by the French trawler « Austral» off the ... Crozet archipelago (sub-area 58-6) does not allow to detect any other marine living resources than the ... exploitation due to their sizes. Deep-sea fishing only (slope of the shelf:300- 750 m) show some shoals of sub ...
Meeting Document : WG-FSA-95/10 : Autor(es): Duhamel, G.
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Krill fishery information
date (17 June 2001) for the 2000/01 season is 45223 t; 9 vessels are believed to be fishing. No fishing ... Abstract: This paper reviews information from krill fisheries operating in the CCAMLR Convention ... Area during the period July 1999 to June 2001. During that period, 14 vessels targeted krill in Area 48 ... during the 1999/2000 season (July 1999 to June 2000). A total of 104259 t of krill was caught, of which ...
Meeting Document : WG-EMM-01/7 : Autor(es): Secretariat
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Reducing seabird by-catch with an underwater longline setting funnel
Abstract: We tested the efficacy of a Mustad underwater setting funnel to reduce seabird bycatch ... in a demersal longline fishery for Patagonian toothfish Dissostichus eleginoides. The funnel, which ... deploys the longline 1-2 m beneath the sea surface, was used on 52% of 1714 sets (total effort 5.12 ... million hooks) over a two-year period. There was no evidence for lower catches or significantly higher ...
Meeting Document : WG-FSA-00/29 : Autor(es): P. Ryan and B. Watkins (South Africa)
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Operational difficulties in exploratory fisheries
Conservation Measures and regulations on Exploratory Fishery, and the actual on-site condition that limits the ... Abstract: F/V Shinsei Maru No.3 has been engaged in Exploratory Fisheries since 2003. Furthermore ... the vessel has conducted research activities under CM24-01 in division 58.4.4 since 2008 and provided ... significant scientific information on toothfish. For the rational utilization of toothfish resources in data ...
Meeting Document : WG-SAM-13/22 : Autor(es): N. Miyagawa, J. Okamoto, N. Akimoto and K. Hirose (Japan)
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Proposal for a krill biomass survey for krill monitoring and management in CCAMLR Division 58.4.2-East
January to 25 March 2021. The survey will estimate krill biomass with a view to update the precautionary ... catch limit for krill. A krill observatory mooring system will also be deployed during the survey to ... further monitor seasonal dynamics of krill in the seasonally ice covered area. The survey is also designed ... to improve our understanding on the connectivity of the krill population, and overlap between krill ...
Meeting Document : WG-EMM-2019/03 : Autor(es): S. Kawaguchi, M. Cox, N. Kelly, L. Emmerson and D. Welsford
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Climate change impacts, vulnerabilities and adaptations: Southern Ocean marine fisheries
Abstract: • The Antarctic region is characterized by complex interaction of natural climate ... biological systems, including impacts on key fishery taxa such as Antarctic krill. • The impact of ... anthropogenic climate change in the short-term could be expected to be related to changes in sea ice and ... ecosystem productivity affecting target stocks. • There are no resident human populations or fishery ...
Meeting Document : WG-EMM-18/P19 : Autor(es): K. Reid
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Statistical problems in krill stock hydroacoustic assessments
-strength measurements. In the case of statistical methods, there are no clear guidelines for deciding what ... : Two primary issues are at question for hydroacoustic assessments of krill. The first is the methods ... applied to establish biomass in a survey area and the second is the improvement in accuracy of target ... method is most appropriate, this is made even more difficult by the fact that most survey methods assume ... assessments of krill. The first is the methods applied to establish biomass in a survey area and the second ... is the improvement in accuracy of target-strength measurements. In the case of statistical methods ... , there are no clear guidelines for deciding what method is most appropriate, this is made even more ... difficult by the fact that most survey methods assume the population is fixed in space, relative to the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Autor(es): Macaulay, M.C.