Résultats de la recherche
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The Mapping Application for Penguin Populations and Projected Dynamics (MAPPPD) database: a tool for helping stakeholders monitor penguin population trends in Antarctica
Abstract: The Mapping Application for Penguin Populations and Projected Dynamics (MAPPPD) is a ... organizations, and policymakers working to meet the management objectives as set forth by The Commission for the ... Conservation of Antarctic Marine Living Resources (CCAMLR) and other components of the Antarctic Treaty System ... (ATS) (i.e., Consultative Meetings and the ATS Committee on Environmental Protection). MAPPPD was ...
Meeting Document : WG-EMM-2019/26 : Auteur(s): G.R.W. Humphries, P. Trathan, R. Naveen, C. Che-Castaldo and H.J. Lynch
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A comparison of gear selectivity among three fishing gears for Antarctic krill with notes on the demographic patterns and productivity of Antarctic krill during summer 2014
Abstract: Three different trawls were used to sample Antarctic krill for the determination of ... demographic and abundance patterns around the South Shetland Islands during Austral summer 2014. A 60cm BONGO ... , 10mm cod end liner) were used and their selectivities are compared. Despite very different apparent ... Distribution Functions (EDFs) for the three gears varied over about 7mm, with the BONGO net catching the ...
Meeting Document : WG-EMM-14/37 : Auteur(s): C. Reiss (USA) and M. Espino Sanchez (Peru)
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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
. Application of the harvest control rule ensuring 75% escapement after a two year projection period yielded a ... 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 ...
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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Mean circulation and hydrography in the Ross Sea sector, Southern Ocean: representation in numerical models
900m at the gyral eastern end compare favourably with float data. On-shelf model depth-averaged west ... Abstract: Three models were used to look at the Southern Ocean Ross Sea sector circulation and ... °E redistributing water between the wider Southern Ocean and the Ross Sea are found. Some model ... seasonal gyral transports increase as the Antarctic Circumpolar Current transport decreases. Model flows at ...
Meeting Document : WG-EMM-10/P13 : Auteur(s): G.J. Rickard, M.J. Roberts, M.J.M. Williams, A. Dunn and M.H. Smith (2010)
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Report of the UK groundfish survey at South Georgia (CCAMLR Subarea 48.3) in January 2015
end of the Shag Rocks shelf. Euphausia superba dominated the overall diet of mackerel icefish although ... Abstract: In January 2015 the UK undertook a bottom trawl survey of CCAMLR sub-Area 48.3 on the ... coverage and encompassing depths between 108 and 352m. The overall biomass of mackerel icefish ... . Mackerel icefish density was low on the fishing grounds of the North West stratum but higher at the western ...
Meeting Document : WG-FSA-15/30 : Auteur(s): M. Belchier, S. Gregory, N. Fallon, J. McKenna, S. Hill, M. Soffker (United Kingdom), P. Lafite (South Africa) and L. Featherstone (United Kingdom)
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Assessment of the Patagonian Toothfish (D. eleginoides) in Subarea 48.3
catch limit set at around 2,750 tonnes would be expected to keep the stock at or above 50% of B0 after ... Abstract: Assessment of the Patagonian toothfish (D.eleginoides) in Subarea 48.3 indicates that ... the current status of the stock is at 52% of B0. Spawning biomass has been increasing in recent years ... . The 2008 year class is estimated to be well above average. Provisional projections indicate that a ...
Meeting Document : WG-FSA-15/59 : Auteur(s): T. Earl, M. Soeffker and C. Darby (United Kingdom)
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Preliminary assessment of mackerel icefish (Champsocephalus gunnari) for the Heard Island Plateau region (Division 58.5.2) based on a survey in June 2005
implementation of the CCAMLR assessment method because the fish are likely to disappear after they become four ... in the vicinity of Heard Island in June 2005 to provide the information for an assessment of short ... -term annual yield in the 2005/2006 CCAMLR season. This paper provides a preliminary assessment of yield ... using the assessment methods of CCAMLR. It is proposed that a one-year projection be used in the ...
Meeting Document : WG-FSA-05/39 : Auteur(s): A.J. Constable, T. Lamb and R. Williams (Australia)
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Demography of Antarctic krill in the Elephant Island area (Antarctic Peninsula) during austral summer 2001
high krill abundance and the high recruitment index reflect the end of a succession of years with poor ... around Elephant Island during 27 January to 4 February 2001. Results show a spatial separation of the ... juvenile and the spawning stock. The station grid was extended to the south, where a large proportion of ... during the past years (between 198 and 230 krill 1000 m-3, i.e. between 40 and 46 m-2 or 11.3 g m-2). The ...
Meeting Document : WG-EMM-01/10 : Auteur(s): V. Siegel (Germany), B. Bergström (Sweden), U. Mühlenhardt-Siegel (Germany) and M. Thomasson (Sweden)
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Tracer trajectories from the western shelf of South Georgia: ship displacement data
. Particles getting onto the shelf become retained with little escape after a run of 100 days. Some of the ... Abstract: Corrected ships heading data were used to calculate drift data for the shelf area to ... the west of South Georgia. The data were collected over a six-week period during 1986. A distance ... weighted interpolation was used to obtain tracer trajectories in this irregular data grid. The vector field ...
Meeting Document : WS-Flux-94/10 : Auteur(s): E.J. Murphy, I. Everson and C. Goss (United Kingdom)
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Plan of research program of the Russian Federation in Subarea 48.5
consideration of the Russian program could be continued after completing analysis of the data from f/v “Yantar ... Abstract: Research program in the Weddell Sea in season 2015/2016 and the following seasons ... presented by the Russian Federation was prepared in accordance with recommendations of the Scientific ... committee (SC-CAMLR-XXXIII, 2014, par. 3.233) and originates from the program developed by the Russian ...
Meeting Document : WG-FSA-15/29 : Auteur(s): Delegation of the Russian Federation