Résultats de la recherche
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Results of trials undertaken around Crozet Island using pots to target Patagonian toothfish
Abstract: Patagonian toothfish (Dissostichus eleginoides) is the target species of a bottom ... longline fishery occurring in the Southern Indian Ocean off Kerguelen and Crozet islands. This fishery is ... exposed to high levels of interactions with cetaceans removing fish from the fishing gear and to ... comparison with longliners. This paper describes the trial and the results obtained with different pot models ...
Meeting Document : WG-FSA-10/10 : Auteur(s): N. Gasco, P. Tixier and C. Guinet (France)
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Models of larvae dispersion of Antarctic toothfish (Dissostichus mawsoni)
from the Antarctic continent north to approximately 57° S. Efforts to understand early life history and ... stock structure in the Ross Sea have parallels for populations in other regions of the Antarctic, and ... hypotheses about how stock structure is maintained may apply to each population. We provide an update of the ... circumpolar models of larval dispersion for D. mawsoni developed by Hanchet et al. (2008) using the HiGEM ...
Meeting Document : WG-FSA-12/48 : Auteur(s): A. Dunn, G.J. Rickard, S.M. Hanchet and S.J. Parker (New Zealand)
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Identification of marine Important Bird and Biodiversity Areas for penguins in South Shetland and South Orkney Islands: a comparison of two different approaches
on pre-existing approaches but revised according to the specific ecology of Pygoscelis penguin ... species; • Key improvements to the pre-existing approach include 1) refining track interpolation methods ... , and 2) revision of parameters for the kernel analysis (the smoothing factor and the utilization ... distribution); • We applied the revised method to 24 datasets of tracking data (three species, seven colonies ...
Meeting Document : WG-EMM-17/35 : Auteur(s): M.P. Dias, A.P.B. Carneiro, V. Warwick-Evans, C. Harris, K. Lorenz, P. Trathan
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Procedures for proposals and reporting on research plans in data-poor fisheries
Abstract: Noting the large increase in new research proposals tabled targeting toothfish across ... the Convention Area, and the relative lack of progress in achieving research objectives in some areas ... , WG-SAM-17 recommended that the procedures for research plan proposals in data poor fisheries be ... compiled and further developed to bring together the advice from the Scientific Committee and its Working ...
Meeting Document : WG-FSA-17/13 : Auteur(s): S.J. Parker and D.C. Welsford
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Spawning periods and locations of Champsocephalus gunnari in Subarea 48.3 (South Georgia and Shag Rocks): a review
indicates that they spawn inshore close to the bays and over the shelf to the northeast. There is also ... evidence that spawning is protracted and occurs from January through to July. The majority of commercial ... fishing activities for this species take place to the northwest of South Georgia over 12 nautical miles ... from the coast and do not overlap with important spawning areas. Therefore the current conservation ...
Meeting Document : WG-FSA-07/55 : Auteur(s): S. Clarke, M. Belchier and M.A. Collins
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Time series of Drake Passage Oscillation Index (DPOI) from 1952 to 2005, Antarctica
Abstract: An assessment of the environmental processes influencing variability in the recruitment ... affects the Antarctic marine ecosystem as a whole. Naganobu et al. (1999) had assessed variability in ... krill recruitment and density in the Antarctic Peninsula area with an environmental factor; strength of ... westerly winds (westerlies) determined from sea-level pressure differences across the Drake Passage ...
Meeting Document : WG-EMM-05/17 : Auteur(s): M. Naganobu and K. Kutsuwada (Japan)
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Proposal for a mark–recapture experiment to estimate toothfish population size in Subarea 48.4
Abstract: One UK vessel fished around the South Sandwich Islands (Subarea 48.4) in in July, 2005 ... programme to assess the toothfish population. Catch rates were similar to those experienced in Subarea 48.3 ... . The UK proposes to undertake a more extensive mark-recapture experiment in Subarea 48.4 over the 2006 ... – 2007 fishing seasons. The objective of the experiment will be to assess toothfish population structure ...
Meeting Document : WG-FSA-05/57 : Auteur(s): Delegation of the United Kingdom
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KRILL FISHERY REPORT: 2008 UPDATE
Abstract: As reported to the CCAMLR Secretariat, 6 vessels from 5 Contracting Parties are fishing ... for krill in Area 48 in the 2007/08 season, and these vessels have taken 84110 t of krill to date. The ... preliminary estimate of the total catch of krill for the season is approximately 108343 t. This compares with ... 104586 t of krill reported in the STATLANT data for 2006/07. With the exception of Poland, all ...
Meeting Document : WG-EMM-08/05 : Auteur(s): Secretariat
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Krill catch distribution in relation to predator colonies 1987 to 1992
Abstract: The distribution of krill catches in relation to land-based predator colonies ... , calculated from CCAMLR fine-scale data, is shown for Subareas 48.1 and 48.2. The pattern of catches in 1992 ... is similar to that seen for other years, with 70% of the total catch from Subarea 48.1 being taken ... within 100 km of colonies and between the months of December to March inclusive (the ‘critical period ...
Meeting Document : WG-KRILL-93/10 : Auteur(s): Secretariat
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Small scale krill surveys: simulations based on observed euphausiid distributions
the effects of krill swarm orientation and shape on the success of two proposed survey designs. The ... distributions each of which is given 4 rotations. The results indicate that the coefficient of variation (c.v ... .) of mean krill density varies inversely with mean density, and is lowest for the survey design ... utilising parallel transects set at right angles to the long axis of the aggregations. Calculations based on ...
Meeting Document : WG-KRILL-91/19 : Auteur(s): D.J. Agnew (Secretariat) and S. Nicol (Australia)