Search results
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
, and often appear to actively seek out fishing vessels and ‘strip’ the line of a large number of ... and 4 animals, and have a relatively lower impact on catches, depressing CPUE by up to 20%. Sperm ... cetaceans, accounting for other determinants of toothfish CPUE through a generalised linear model, it is ... actively seek out fishing vessels and ‘strip’ the line of a large number of toothfish, usually depressing ... a relatively lower impact on catches, depressing CPUE by up to 20%. Sperm whales have been more ... determinants of toothfish CPUE through a generalised linear model, it is estimated that the amounts of ... sur les palangriers de 2003 à 2009 ont été analysées afin d'examiner les niveaux de déprédation ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Author(s): Moir Clark, J. and D.J. Agnew
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Seabird mortality in the Patagonian toothfish longline fishery around Crozet and Kerguelen Islands, 2001–2003
caught over this period. A multivariate analysis suggests that a combination of factors (environmental ... incidentally. The results of this study suggest that a significant part of the mortality of white-chinned ... caught over this period. A multivariate analysis suggests that a combination of factors (environmental ... incidentally. The results of this study suggest that a signifi cant part of the mortality of white-chinned ... and Kerguelen Islands (Subarea 58.6 and Division 58.5.1 respectively). Résumé La pêcherie à la ... (ZEE) françaises des îles Crozet et Kerguelen (sous- zone 58.6 et division 58.5.1 respectivement) a ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 53–80 : Author(s): Delord, K., N. Gasco, H. Weimerskirch, C. Barbraud and T. Micol
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Interactions of Patagonian toothfish fisheries with killer and sperm whales in the Crozet Islands Exclusive Economic Zone: an assessment of depredation levels and insights on possible mitigation strategies
% respectively of the 4 289 hauled lines. It was estimated that a total of 571 tonnes (€4.8 million) of ... whales were found to be responsible for the largest part of this loss (>75%), while sperm whales had a ... distances >40 n miles to prevent killer whales from finding them within a few hours. Although more data ... % respectively of the 4 289 hauled lines. It was estimated that a total of 571 tonnes (€4.8 million) of ... whales were found to be responsible for the largest part of this loss (>75%), while sperm whales had a ... distances >40 n miles to prevent killer whales from finding them within a few hours. Although more data are ... zone économique exclusive (ZEE) de l'archipel de Crozet, la pêcherie palangrière à la légine australe ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 179–195 : Author(s): Tixier, P., N. Gasco, G. Duhamel, M. Viviant, M. Authier and C. Guinet
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Estimating optimal observer coverage in the Antarctic krill fishery
by-catch. A partial coverage sampling program has been implemented in South Georgia since 2002 ... on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ... the Scientific Committee will have sufficient data to determine appropriate sampling strategies in a ... larval fish by-catch. A partial coverage sampling program has been implemented in South Georgia since ... been present on board for about 30% of that season. They have achieved a rate of krill sampling ... sampling strategies in a particular area. Résumé Les données collectées dans le cadre du Système ... international d'observation scientifique de la CCAMLR sur les chalutiers conventionnels à krill en pêche en ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Author(s): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards
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Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
. Observer datasets from the Japanese krill fishery from 1995 to 2008 were analysed using a hierarchical ... and haul) based on a state–space model, separating biological process error in the population dynamics ... statistical precision required for the specific objective of a study that includes consideration of the cost ... a single snapshot survey may not provide sufficient information for management. For exam- ple, the ... change on krill recruitment variability, and agreed that a full review of the influence of recruit- ment ... necessary to undertake ecosystem monitoring at a broad spatio–temporal scale. Un- dertaking broad-scale ... surveys using scientific research vessels in the Antarctic has a range of practical and economic ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Author(s): Okuda, T. and M. Kiyota
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An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and functional relationships (submitted to the 2008 Joint CCAMLR-IWC Workshop)
an enormous amount of data on Southern Ocean (SO) zooplankton, mostly on their distribution with a ... assist SO food-web modellers or those with limited specialist knowledge of SO zooplankton. First, a brief ... that of postlarval E. superba. This fact reflects a large flow of energy through multiple trophic ... , BIOMASS, FEEDING AND FUNCTIONAL RELATIONSHIPS A. Atkinson* and P. Ward British Antarctic Survey ... data on Southern Ocean (SO) zooplankton, mostly on their distribution with a minority addressing rate ... modellers or those with limited specialist knowledge of SO zooplankton. First, a brief overview is ... . This fact reflects a large flow of energy through multiple trophic levels, via copepods and their ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 171–218 : Author(s): A. Atkinson, P. Ward, B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie
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Factors to consider in developing management measures for krill
/ Description: A brief review of the objectives of the Convention for the Conservation of Antarctic Marine ... outlined. Some interim management measures are suggested which could be implemented while a more generally ... MANAGEMENT MEASURES FOR KRILL W.K. de la Mare>l< Abstract A brief review of the objectives of the ... are suggested which could be implemented while a more generally applicable management is being ... peche par a-coups et l'utilisation de l'ouverture et de la fermeture de zones et de periodes sont ... tracees. Plusieurs mesures de gestion interimaires, pouvant etre mises a execution en attendant le ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 175–187 : Author(s): de la Mare, W.K.
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Characteristics of krill swarms from Prydz Bay
CCAMLR.AUS dataset available to the Subgroup on Survey Design was derived from a survey of Prydz Bay ... inter-swarm length were calculated for swarms of euphausiids encountered along a 78 km transect over the ... Subgroup on Survey Design was derived from a survey of Prydz Bay, Antarctica, in December 1990. Swarm ... calculated for swarms of euphausiids encountered along a 78 km transect over the continental shelf close to ... essaims d'euphausiaces rencontres le long d'un transect de 78 km sur le plateau continental a proximite ... du site d'etude du CEMP a l'1le Magnetic, on a calcule la longueur, la profondeur, l'epaisseur ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 177–189 : Author(s): Agnew, D.J. and I.R. Higginbottom
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Standardization of fishing effort for Champsocephalus gunnari in the South Georgia area (Subarea 48.3)
inflexible in its use of data types and has no estimate of accuracy. A standardized CPUE index for ... Champsocephalus gunnari fishing in Subarea 48.3 is derived using a multiplicative model and data from many ... accuracy. A standardized CPUE index for Champsocephalus gunnari fishing in Subarea 48.3 is derived using ... a multiplicative model and data from many different classes (countries, types of vessel, fishing ... Ha eAHHHI.-\Y npOMbICJIOBOrO YCHJIH5.I HeH3MeHHO HCnOJIb3YIOTC5.I O~HH H Te :>Ke THnbI ~aHHbIX, a ... nYTeM HCnOJIb30BaHH5.I MYJIbTHnJIHKaTHBHoti MO~eJIH H ~aHHbIX wHpoKoro p5.l~a KJIaCCOB (cTpaHbI ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 327–336 : Author(s): Gasiukov, P.S.
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Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass
biomass by acoustic techniques is dependent on a number of factors of which one of the most fundamental is ... average 1.4 dB less than in European waters (16.6 o C), and a similar trend was detected at 38 kHz. If ... estimation of temperature variation across a survey area should be considered carefully File: 16brierley ... C C A M L R Science, Vol. 5 (1998): 273-281 SHORT NOTE ... Abstract Accurate estimation of krill biomass by acoustic techniques is dependent on a number of factors ... (16.6"C), and a similar trend was detected at 38 kHz. If European calibration parameters were to be ... across a survey area should be considered carefully. Resume L'estimation precise de la biomasse de ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 273–281 : Author(s): Brierley, A.S., C. Goss, J.L. Watkins and P. Woodroffe