Résultats de la recherche
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Estimation of the 2011 catch limit for mackerel icefish (Champsocephalus gunnari) in Subarea 48.3 using a length-based population dynamics model
Abstract: A length based projection model is employed to estimate catch limits for the 2011/12 ... fishing season for Champsocephalus gunnari in CCAMLR sub area 48.3. The model is initialised using ... estimated numbers at length derived from survey length density and biomass density data, removing the need ... for cohort identification associated with the age based projection model used in previous assessments ...
Meeting Document : WG-FSA-10/37 : Auteur(s): C.T.T. Edwards, R.E. Mitchell, J. Pearce and D.J. Agnew (UK)
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Preliminary stock assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet islands (part of subarea 58.6)
Abstract: A preliminary assessment is undertaken to increase the knowledge of the Patagonian ... show different estimates for the initial and current biomass. A range of 55000 to 115000 tons is ... observed for B0 estimates and SSB never fall below 70% of the initial biomass considering the actual level ... Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet islands (part of subarea 58.6 ...
Meeting Document : WG-FSA-13/05 : Auteur(s): R. Sinegre and G. Duhamel (France)
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Mark-recapture inputs to the 2017 Ross Sea region stock assessment (Subarea 88.1 and SSRUs 88.2A–B)
Abstract: We provide a summary of the mark-recapture data inputs to the 2017 Ross Sea region ... detection rates for each vessel were calculated. In the last few years the effective tagging survival is ... estimated at about 65% and the effective tag detection rate at about 85%. Author(s): S. Parker and S ... . Mormede Title: Mark-recapture inputs to the 2017 Ross Sea region stock assessment (Subarea 88.1 and SSRUs ...
Meeting Document : WG-FSA-17/36 : Auteur(s): S. Parker and S. Mormede
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Hierarchical monitoring plans to determine patterns of change in the Antarctic Marine Ecosystem
Abstract: In this paper we drawn comparison between the existing CCAMLR Ecosystem Monitoring ... the outcomes of the CEMP Review in 2003, and as a result highlight the intensity of monitoring ... monitoring could be employed to detect the first signs of change. Author(s): P. Trathan Title: Hierarchical ... monitoring plans to determine patterns of change in the Antarctic Marine Ecosystem Approval: Approved ...
Meeting Document : WS-SM-18/06 : Auteur(s): P. Trathan
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The Antarctic toothfish: how common a prey for Weddell seals?
. In addition to past reports of isolated toothfish captures, the frequency of these observations and ... the quantity of toothfish captured lead us to suggest that this species is a significant prey item for ... Weddell seals, and that the recent development of a toothfish fishery in the Ross Sea may have broader ... impacts than expected. This is especially important in the McMurdo Sound region as toothfish are probably ...
Meeting Document : WG-EMM-07/P4 : Auteur(s): P.J. Ponganis and T.K. Stockard (USA)
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AN IMPACT ASSESSMENT FRAMEWORK FOR BOTTOM FISHING METHODS IN THE CCAMLR AREA
Abstract: This paper presents a methodological framework to estimate the likely cumulative impact ... on fragile benthic organisms from bottom fishing activity. The approach has been designed to ... assessment of bottom fishing impacts for the 2008/09 toothfish longline fishery. This paper illustrates the ... utility of the standardized approach and provides a methodological template for systematic impact ...
Meeting Document : WG-SAM-09/P01 : Auteur(s): B.R. Sharp, S.J. Parker and N. Smith (New Zealand)
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ECOLOGICAL REPERCUSSIONS OF HISTORICAL FISH EXTRACTION FROM THE SOUTHERN OCEAN
Abstract: A major mid-1980s shift in ecological structure of significant portions of the Southern ... Ocean was partially due to the serial depletion of fish by intensive industrial fishing, rather than ... strong year classes, as is true of such fish elsewhere. A climate regime, the Southern Annular Mode, once ... oscillated between two states, but has remained in its “positive mode” since the time of the fish extraction ...
Meeting Document : WG-EMM-08/P07 : Auteur(s): D. Ainley and L. Blight
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POPULATION SUBDIVISION IN THE ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) REVEALED BY MITOCHONDRIAL AND NUCLEAR SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS)
Abstract: The Antarctic toothfish (Dissostichus mawsoni) exhibits a circumpolar distribution in ... coastal waters south of the Antarctic Polar Front. For a preliminary evaluation of global population ... from four CCAMLR Subareas in the Southern Ocean (Australian Antarctic Territory (Subarea 58.4.2), Ross ... Dependency (Subareas 88.1 and 88.2) and the South Shetland Islands (Subarea 48.1). Significant genetic ...
Meeting Document : WG-FSA-08/P01 : Auteur(s): K. Kuhn and P.M. Gaffney
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Krill: the power lunch of Antarctica
the management of the krill fishery, conducting a new krill synoptic survey, keeping the trigger level ... as the enforceable catch limit, improving monitoring through a strengthened CEMP program, continuing ... procedures with the aim of reducing speculative notifications, and requiring mandatory ice-strengthening for ... krill fishing vessels. Author(s): Submitted by ASOC Title: Krill: the power lunch of Antarctica ...
Meeting Document : CCAMLR-XXXIII/BG/25 : Auteur(s): Submitted by ASOC
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Update of analysis on sea-ice concentration of southern part of 48.6 and 58.4.2 for the new research block on expected spawning ground of TOA
Abstract: Following WG-SAM-16/42 Rev. 1, we updated the analysis on the sea-ice concentration of ... the period (2002-2017 until April) for 48.6_4 and 48.6_5. In addition, we also analyze the ice ... ) and hence it should be covered by research for stock assessment in the near future. Author(s): T ... 48.6 and 58.4.2 for the new research block on expected spawning ground of TOA Approval: Approved ...
Meeting Document : WG-SAM-17/10 : Auteur(s): T. Namba, T. Ichii and T. Okuda