Résultats de la recherche
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Reducing seabird by-catch with an underwater longline setting funnel
Abstract: We tested the efficacy of a Mustad underwater setting funnel to reduce seabird bycatch ... in a demersal longline fishery for Patagonian toothfish Dissostichus eleginoides. The funnel, which ... deploys the longline 1-2 m beneath the sea surface, was used on 52% of 1714 sets (total effort 5.12 ... ), and was dominated by White-chinned Petrels Procellaria aequinoctialis (88% of the 114 birds killed ...
Meeting Document : WG-FSA-00/29 : Auteur(s): P. Ryan and B. Watkins (South Africa)
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Krill biomass estimates for South Georgia, December and January 1996/97
obtained during the n10st recent previous surveys of krill biomass (January 1996) in these areas, but ... Georgia during December/January 1996/97. Netting suggested that the mean lengths of krill within the ... to be attributable to krill were identified on the basis of the difference between mean volume ... conducted within two 80 x 100 km areas over the shelf-break to the north-east and north-west of South ...
Meeting Document : WG-EMM-97/48 : Auteur(s): Goss, C., Watkins, J.L., Brierley, A.S.
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Age-structured production model for toothfish at South Georgia
through the introduction of a new annual selectivity function, modelled as a unimodal, algebraically ... , by allowing all parameters to be estimated in this way the model is over-parameterised and regularly ... reaches preset parameter boundaries. With one or two parameters of the selectivity estimated only once the ... high weight in the fitting, then the model has sufficient flexibility to change the selectivity to fit ...
Meeting Document : WG-FSA-SAM-05/18 : Auteur(s): A. Payne, G.P. Kirkwood, R. Hillary and D.J. Agnew (United Kingdom)
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Seabird research on Cape Shirreff, Livingston Island, Antarctica, 2000/01
in support of CCAMLR WG-EMM, are summarized in the report Author(s): M. Taft, I. Saxer and W ... Abstract: The austral summer 2000/01 marked the fourth full season of land-based predator ... research at Cape Shirreff, Livingston Island, Antarctica. Results of the monitoring activities undertaken ...
Meeting Document : WG-EMM-01/33 : Auteur(s): M. Taft, I. Saxer and W. Trivelpiece (USA)
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CCAMLR streamer line requirements revisited
CCAMLR in 1991. This discussion paper responds to the interest of the IMAF working group to consider ... in most longline fisheries throughout the world, based to a large degree on the precedent set by ... possible revisions to the CCAMLR streamer line requirement. Existing literature on the effectiveness of ... Abstract: The streamer line has become the primary seabird mitigation device prescribed and used ...
Meeting Document : WG-FSA-03/22 : Auteur(s): E.F. Melvin (USA)
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Stratégie salariale et de dotation en personnel de la CCAMLR (2019–2022)
Abstract: In 2017 SCAF directed the Secretariat to undertake a review of its Strategic Plan and ... need to increase the proportion of IP positions at the Secretariat, and to strengthen the Secretariat’s ... restructure and strengthen these functions within the Secretariat, to increase the proportion of IP staff from ... 12% in 2018 to 35% by 2022 and 50% by 2028, and to revise the Staffing and Salary Strategy and Staff ...
Meeting Document : CCAMLR-XXXVII/21 Rev. 1 : Auteur(s): Executive Secretary
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Krill community studies using net and hydroacoustic sampling techniques
abundance of krill. In an attempt to address the effect that variability in sampling gear type may have on ... of these types of samp1ing gear commonly used in the Antarctic has been initiated. Author(s): J.R ... Abstract: Hydroacoustic and net sampling data were used to determine the distribution and ...
Meeting Document : SC-CAMLR-VI/BG/45 : Auteur(s): J.R. Green, J. Wormuth and V. Loeb (USA)
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Empirically-driven feedback management incorporating multi-scale risk assessment and an experimental framework to facilitate adaptive improvement
merit in terms of the utility of available data. However, none currently offers a holistic solution in ... their own right. In 2017, the Scientific Committee encouraged coordination among the various approaches ... seeks to demonstrate the practicality of its implementation that could provide CCAMLR with a “dress ... al. 2016), and recently a more empirical approach using a combination of fishing fleet-collected ...
Meeting Document : WG-EMM-2019/18 : Auteur(s): A.D. Lowther, B. Krafft, O.R. Godø, C. Cardenas, X. Zhao and O.A. Bergstad
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Interactions between cetaceans and long-lining operations for Patagonian toothfish Dissostichus eleginoides around South Georgia
interactions of killer whales and sperm whales with longlining operations may be common in the South Atlantic ... operations and may have been removing fish captured on the lines. Numbers of sperm whales varied with ... location; some whales with identifying masks were observed over successive lines to the south-west of South ... Georgia, but were not seen on subsequent operations to the north-west of the island. On two occasions ...
Meeting Document : WG-IMALF-94/16 : Auteur(s): J.R. Ashford (United Kingdom) and P.S. Rubilar (Chile)
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Describing krill: swarms or integration intervals?
estimated mean areal krill density for a small (65 km by 60 km) survey conducted in the waters off Mawson ... , rather than the current integration grid approach, may facilitate the semi-automated processing of ... research station in the East Antarctic (66 o 25' S 63 o 14' E). I found 61 % overlap between the ... variance estimates for conventional grid-based swarm-based krill density. The processing time of the swarm ...
Meeting Document : SG-ASAM-17/02 : Auteur(s): M.J. Cox