Résultats de la recherche
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A conceptual model of the krill fishery
Abstract: The behaviour patterns of Japanese krill fishery vessels in Area 48 were analysed using ... , krill density, krill, size, ice condition, transshipment, and salp-by catch accounted for 95.6% of the ... changes. Although low krill density was the primary reason for changing fishing grounds, other seasonal ... succession of the Japanese krill fishing operation revealed that they tend to utilize fishing grounds close ...
Meeting Document : WG-EMM-04/51 : Auteur(s): S. Kawaguchi, S. Nicol (Australia), K. Taki and M. Naganobu (Japan)
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On the problem of icefish (Champsocephalus gunnari) (Channichthyidae) and krill (Euphausia superba) interaction in the South Georgia area
Abstract: The interaction of icefish and krill in the South Georgia area has been analysed on the ... stages and as adults utilize the pelagic forage resource, the bulk of which is constituted by krill. At ... the same time krill content in the food of different length groups varied. The effect of krill on ... -bottom-pelagic distribution pattern of fish is sufficiently stipulated by the impact of krill ...
Meeting Document : WG-FSA-04/41 : Auteur(s): S.M. Kasatkina and Zh.A. Frolkina (Russia)
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On commercial significance of krill aggregations
Abstract: We made an attempt to estimate krill commercial biomass density within the fleet ... operation areas and compare it with critical density values for marine animals feeding on krill. The results ... and 2002 (2380 hauls). In the course of the recent twenty years, krill has been fished in the areas ... with biomass density of at least 100 g/m2. This threshold value of krill commercial biomass ...
Meeting Document : WG-EMM-03/31 : Auteur(s): S.M. Kasatkina (Russia)
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Measurements of sound-speed and density contrasts of Antarctic krill (Euphausia superba) on board RV Kaiyo Maru
Abstract: In order to calculate the target strength of Antarctic krill (Euphausia superba) using ... of krill were measured during the Antarctic surveys conducted by the Japanese RV Kaiyo Maru in 1999 ... /2000 and 2004/2005. Samples of krill were caught by a RMT(1+8). Mass-density of krill was measured by ... . The corresponding sound-speed contrast of krill with mean total lengths of 44.2mm was 1.011 in the ...
Meeting Document : WG-EMM-08/56 Rev. 1 : Auteur(s): Y. Takao, H. Yasuma, R. Matsukura, K. Amakasu and M. Naganobu (Japan)
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Krill population trends
Abstract: Krill (Euphausia superba) distribution and abundance data are available from a number ... , from fisheries data and from the distribution of krill predators. Each of these forms of data ... collection has its own biases and limitations and our current understanding of krill distribution and ... Antarctic krill, based mainly on analysis of available scientific net data. There is also evidence of ...
Meeting Document : CCAMLR-IWC-WS-08/11 : Auteur(s): Tarling, G., Watkins, J., Quetin, L., Reiss, C., Atkinson, A., Ross, R., Pakhomov, E., Kawaguchi, S., Nicol, S., Siegel, V.
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Krill biomass estimates for South Georgia, December and January 1996/97
Georgia during December/January 1996/97. Netting suggested that the mean lengths of krill within the ... box-specific krill target strength (TS) values of-38.89 and-38.59 dB kg-1. Acoustic signals believed ... to be attributable to krill were identified on the basis of the difference between mean volume ... backscattering strength at 120 and 38kHz (mvbsl20 kHz- mvbs38kHz between 2 and 12 dB indicative of krill). Mean ...
Meeting Document : WG-EMM-97/48 : Auteur(s): Goss, C., Watkins, J.L., Brierley, A.S.
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Krill fishery report: 2010 update
Abstract: So far this season (2009/10), ten of the 11 krill fishing vessels licensed by Members ... total catch of krill for the season is 150000-180000 t. In 2008/09, five Members fished for krill in ... largest catch of krill was taken from SSMU SOW (South Orkney West) in Subarea 48.2 (89184 t), and the ... second time that fishing was reported from SSMU APE; previously, 25 t of krill was taken in 1995/96. The ...
Meeting Document : WG-EMM-10/05 : Auteur(s): Secretariat
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A biomass estimate of Antarctic krill (Euphausia superba) at the Balleny Islands
Abstract: The biomass of Antarctic krill (Euphausia superba) at the Balleny Islands, Antarctica ... data processing followed the recommendations of CCAMLR SG-ASAM. Two parameterisations of the krill ... krill, θ, as a normal distribution, mean = 11°, standard deviation = 4°, N(11,4), the second ... parameterisation used θ = N(-20,28). Krill biomass using estimated using θ = N(11,4) was 20.8 kilotonnes ...
Meeting Document : WG-EMM-15/17 Rev. 1 : Auteur(s): M.J. Cox (Australia), Y. Ladroit, P. Escobar-Flores and R.L. O’Driscoll (New Zealand)
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Quantifying the escape mortality of trawl caught Antarctic krill (Euphausia superba)
Abstract: Antarctic krill (Euphausia superba) is an abundant fishery resource, the harvest levels ... of which are expected to increase. However, many of the length classes of krill can escape through ... fishing gear. The methods for determining fishing mortality in krill are still poorly developed. We used a ... mortality rates of escaped krill. Haul duration, hydrological conditions, maximum fishing depth and catch ...
Meeting Document : WG-EMM-16/04 : Auteur(s): B.A. Krafft, L.A. Krag, A. Engås, S. Nordrum, I. Bruheim and B. Herrmann
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Preliminary results from the International Synoptic Krill Survey in Area 48, 2019
Abstract: Preliminary results from the International Synoptic Krill Survey in Area 48, 2019, are ... results from four (vessels from the Association of Responsible Krill harvesting companies (ARK), Norway ... , which were based on the methods and procedures used in the CCAMLR 2000 krill acoustic survey ... . Backscatter from krill were delineated using the 'swarms' method and integrated to produce ...
Meeting Document : WG-EMM-2019/47 : Auteur(s): G. Macaulay, G. Skaret, T. Knutsen, O.A. Bergstad, B. Krafft, S. Fielding, S.G. Choi, S. Chung, K. Demianenko, V. Podhornyi, K. Vishnyakova, L. Pshenichnov, A. Chuklin, A. Shishman and M.J. Cox