Résultats de la recherche
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Distribution and abundance of krill in the vicinity of Elephant Island in the 1992 austral summer
in the vicinity of Elephant Island, Antarctica, from mid-January to mid-March, 1992. The first and ... were distributed in a wide band extending along the north side of Elephant Island and wrapping around ... northeast end of Elephant Island into deeper water. Biomass in the smaller survey area was estimated to be ... 0.7 million metric tons. Three weeks later, high krill densities were still apparent in the vicinity ...
Meeting Document : WG-CEMP-92/15 : Auteur(s): R.P. Hewitt and D.A. Demer (USA)
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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
population stock assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 covering SSRUs ... 88.2C, D, E, F, G, and H (SSRUs 88.2C–H). Annual age-length keys were applied, and the time trends in ... biomass in SSRUs 88.2C-G are considered, in particular by improving the spatial overlap between tags ... released and subsequent fishing effort. That the recent high exploitation rates and localised depletion in ...
Meeting Document : WG-SAM-14/29 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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On necessity of reconsideration of geographic boundaries, TAC estimates and duration of research fishing of Antarctic toothfish in SSRUs of Subarea 88.1 in the Ross Sea
distribution in the Ross Sea (Pacific Sector of Antarctic) show the complete failure of division of Subarea ... 88.1 on 12 SSRUs accepted in 2003 and allocation of TACs (quotas) based on the square areas of bottom ... and CPUEs (kg/1000 hooks) received for the other toothfish species (Patagonian toothfish) in Subarea ... fishing of Antarctic toothfish in SSRUs of Subarea 88.1 in the Ross Sea Approval: Approved ...
Meeting Document : WG-FSA-05/72 : Auteur(s): K.V. Shust, N.V. Kokorin and A.F. Petrov (Russia)
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Estimates of length-frequency in the assessment of mackerel icefish Champsocephalus gunnari in Subarea 48.3
Abstract: This working document provides details of a modification in the method of calculating ... length distributions used in the assessment of Champsocephalus gunnari from the length distributions of ... individual hauls. The effect of these changes in method have little impact on the catches that would have ... from the 2015 and 2017 surveys. Author(s): T. Earl Title: Estimates of length-frequency in the ...
Meeting Document : WG-FSA-17/51 : Auteur(s): T. Earl
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Fishing ground selection in krill fishery: trends in its patterns across years, seasons, and nations
towards later months within fishing seasons was observed in Area 48.1 (Dec-Feb to Mar-May). However ... , operational timing stayed relatively constant in Areas 48.2 (Mar-May) and 48.3 (Jun-Aug). During a quarter ... century of krill operation in Area 48, patterns of SSMU usage has changed. Three different patterns of ... also recognized in order to accommodate any possible development of the fishing techniques. Author(s ...
Meeting Document : WG-EMM-05/28 : Auteur(s): S. Kawaguchi (Australia), K. Taki and M. Naganobu (Japan)
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Using digital video monitoring systems in fisheries: applications for monitoring compliance of seabird avoidance devices and seabird mortality in Pacific halibut longline fisheries
) in the Pacific halibut longline fleet operating off the state of Alaska. The project was conducted on ... two of the IPHC stock assessment survey vessels fishing in Alaska during 2002. The objectives of the ... could be used to assist in compliance determination, an EMS system was installed on two halibut longline ... EMS was successful in detecting streamer line deployment and relative position on 100% of the daytime ...
Meeting Document : WG-FSA-04/24 : Auteur(s): R.T. Ames, G.H. Williams and S.M. Fitzgerald (USA)
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Results from the reduced groundfish survey conducted in CCAMLR Subarea 48.3 in January 2012
. Reasonable catches of Patagonian toothfish were found around Shag Rocks (greater than in 2009 and 2010), with ... and Euphausiidae was the dominant prey item in the mackerel icefish diet. Strong acoustic marks, some ... of which may be attributable to icefish, were observed in the water column, and in only 23 hauls 15.2 ... ) Title: Results from the reduced groundfish survey conducted in CCAMLR Subarea 48.3 in January 2012 ...
Meeting Document : WG-FSA-12/37 : Auteur(s): J. Brown, S. Gregory, A. Stanworth, V. Carretero, G. Baker and M. Belchier (United Kingdom)
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Estimation and correction of migration-related bias in the tag-based stock assessment of Patagonian toothfish in Division 58.5.2
Abstract: Migration has the potential to violate the assumptions of tag recapture models used in ... . Our simulations demonstrated that emigration of tagged fish out of the assessed area results in ... from two periods, 2007-2014 and 2009-2014 and used tag recaptures to 2015 in both cases. The annual ... annual migration rates <2%, consistent with those we observed in Patagonian toothfish on the Kerguelen ...
Meeting Document : WG-SAM-17/11 : Auteur(s): P. Burch, P. Ziegler, D. Welsford and C. Péron
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Closing the gaps in CCAMLR’s oversight of at-sea transhipments in the Convention Area
Abstract: In this paper, ASOC argues that the time is ripe for upgrading CCAMLR provisions on ... transhipments. The 2 nd Performance Review of CCAMLR identified a “significant gap” in relation to transhipments ... provisions in the CCAMLR Convention Area are not up to the highest standards when compared to those of RFMOs ... that occurred in the Convention Area. Author(s): Submitted by ASOC Title: Closing the gaps in ...
Meeting Document : CCAMLR-XXXVII/BG/37 : Auteur(s): Submitted by ASOC
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Proposed continuation of a multi-Member longline survey on Antarctic toothfish (Dissostichus mawsoni) in Statistical Subarea 48.6 in 2018/19 by Japan, South Africa and Spain
2013 to enhance data collection and analysis in the Subarea 48.6. In the last WG-SAM Spain has proposed ... to join the former proposal in order to contribute to the data acquisition and to speed up the ... integrated assessments of the D.mawsoni stock in this subarea. The Working Group recommended that Spain ... models and assessments in support of management advice. An Integrated Stock Assessment (ISA) of this ...
Meeting Document : WG-FSA-18/34 : Auteur(s): Delegations of Japan, South Africa and Spain