Résultats de la recherche
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A hypothetical life cycle for Antarctic toothfish Dissostichus mawsoni in Antarctic waters of CCAMLR Statistical Area 88
Dissostichus mawsoni in CCAMLR Statistical Areas 88.1 & 88.2 were reviewed. Based on the presumed location ... of the smallest toothfish taken in the toothfish fishery. Our present hypothesis is that D. mawsoni ... in CCAMLR Statistical Subareas 88.1 and 88.2 spawn to the north of the Antarctic continental slope ... the Ross Sea in Subarea 88.2. As the juveniles grow in size they move west back towards the Ross Sea ...
Meeting Document : WG-FSA-07/35 : Auteur(s): S.M. Hanchet, G.J. Rickard, J.M. Fenaughty, A. Dunn and M.J. Williams (New Zealand)
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Review of CCAMLR activities on monitoring marine debris in the Convention Area
impact on marine mammals and seabirds in the Convention Area has been reviewed. The CCAMLR Marine Debris ... items reached a peak in the period 1994-1996 at Bird Island and Signy Island, but declined after that ... . The number of debris items has increased at Bird Island in 2006 and Signy Island in 2007, but ... decreased at King George Island in 2007. The majority of items reported were packaging materials, fishing ...
Meeting Document : SC-CAMLR-XXVI/BG/10 : Auteur(s): Secretariat
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Preliminary assessment of long-term yield of Patagonian toothfish (Dissostichus eleginoides) for the Heard Island Plateau region (CCAMLR Division 58.5.2) based on a random stratified trawl survey in May 2004
Abstract: A survey of Patagonian toothfish, Dissostichus eleginoides,was undertaken in Division ... 58.5.2 in the vicinity of Heard Island in May 2004 to provide the information for an assessment of short ... -term annual yield in the 2004/2005 CCAMLR season. This paper provides a preliminary assessment of yield ... the surveys and ages included in the estimation of the recruitment series. Author(s): C.R. Davies, T ...
Meeting Document : WG-FSA-04/76 : Auteur(s): C.R. Davies, T. Lamb, A.J. Constable and R. Williams (Australia)
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Workshop Report – The Ross Sea: Science, Policy and the Public in a Pristine Marine Ecosystemt
% of the Southern Ocean, which is inconsequential, yet its attributes, as identified in this workshop ... par with those recognized in World Heritage Sites designated elsewhere (e.g., Galàpagos, African Rift ... Lakes, Lake Baikal); on the basis of projections made from current models in the IPCC array, it likely ... cryopelagic community of organisms; and it is the best studied stretch of high latitude ocean in the Southern ...
Meeting Document : WG-EMM-09/14 : Auteur(s): J. Weller and D.G. Ainley (USA)
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DEVELOPMENT OF SPATIALLY EXPLICIT AGE-STRUCTURED POPULATION DYNAMICS OPERATING MODELS FOR ANTARCTIC TOOTHFISH IN THE ROSS SEA
operating models for Antarctic toothfish in the Ross Sea. The operating models consider both a coarse-scale ... spatial distribution parameters as an aid in evaluating the operating models. The models are implemented ... in the generalised Bayesian population dynamics model, the Spatial Population Model (SPM). The SPM ... discrete time-step state-space model that represents a cohort-based population age structure in a spatially ...
Meeting Document : WG-SAM-09/18 : Auteur(s): A. Dunn, S. Rasmussen and S. Hanchet (New Zealand)
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An acoustic estimation of krill densities to the north of South Georgia in January 1994
Abstract: Dual frequency (38 and 120 kHz) acoustic surveys were carried out in two regions along ... the northern coast of South Georgia from RRS lames Clark Ross during January 1994. Difference in ... densities in both regions were extremely low in comparison with previously published density estimates, and ... provide further evidence of an extreme krill paucity around South Georgia in the 1993/4 season. Author(s ...
Meeting Document : WG-EMM-95/74 : Auteur(s): Watkins, J.L., Brierley, A.S.
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Assessment of the status of the Champsocephalus gunnari stock in the South Georgia area for the 1990/91 season and TAC calculations for the 1991/92 season
Abstract: An adaptive approach was used to assess the Champsocephalus. gunnari stock in Area 48.3 ... . Values of catch/effort by age group and by year of fishing were used in conjunction with abundance ... indices from trawl surveys in tuning the VPA. The C. gunnari stock at the start of the 1990/91 season is ... estimated at 184 thousand tonnes. Calculation of TAC was carded out keeping in mind the change to the ...
Meeting Document : WG-FSA-91/27 : Auteur(s): P.S. Gasiukov (USSR)
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Summary of notifications for krill fisheries in 2010/11
Abstract: Seven Members submitted notifications for a total 15 vessels for krill fisheries in ... Subareas 48.1, 48.2, 48.3 and 48.4 and Divisions 58.4.1 and 58.4.2 in 2010/11. There was no notification ... submitted for exploratory fisheries for krill in 2010/11. The total notified, expected level of catch of ... krill in 2010/11 is 410000 tonnes. Author(s): Secretariat Title: Summary of notifications for krill ...
Meeting Document : WG-EMM-10/06 : Auteur(s): Secretariat
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Hook loss in CCAMLR exploratory fisheries
lines requires an estimate of the number of lost hooks that are attached to sections of line. In 2011 ... attached to sections of lines. In 2012 15 of the 26 vessel/fishery reports provided non-zero data with an ... estimated total of 313548 hooks lost attached to sections of line. In exploratory fisheries, particularly ... those in data-poor regions, the requirement and appropriate mechanism for reporting these data may need ...
Meeting Document : WG-FSA-12/65 : Auteur(s): Secretariat
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Further development of coarse- and medium-scale spatially explicit population dynamics operating models for Antarctic toothfish in the Ross Sea region
operating models for Antarctic toothfish in the Ross Sea. The operating models consider both a coarse-scale ... in the generalised Bayesian population dynamics model, the Spatial Population Model (SPM). The SPM ... discrete time-step state-space model that represents a cohort-based population age structure in a spatially ... , suggesting that younger fish were found predominantly in the southern shelf areas, mature fish on the slope ...
Meeting Document : WG-FSA-12/44 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)