Résultats de la recherche
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Competition-induced starvation drives large-scale population cycles in Antarctic krill
Abstract: Antarctic krill (Euphausia superba)—one of the most abundant animal species on Earth ... . Previous studies have postulated that the krill cycle is induced by periodic climatological factors, but ... models. Here, using data analysis complemented with modelling of krill ontogeny and population dynamics ... , we identify intraspecific competition for food as the main driver of the krill cycle, while external ...
Meeting Document : WG-EMM-18/P05 : Auteur(s): A.B. Ryabov, A.M. de Roos, B. Meyer, S. Kawaguchi and B. Blasius
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Krill fishery information
Abstract: Fisheries targeting krill (Euphausia superba) in the CCAMLR Convention Area during 1998 ... /99 caught 103318 t of krill, and preliminary information indicates that the catch in 1999/00 will ... exceed 82913 t. Krill caught in 1998/99 was taken in Subareas 48.1 (38% of total catch), 48.2 (49%) and ... observer data submitted to the Secretariat are discussed, together with other information on krill obtained ...
Meeting Document : WG-EMM-00/25 : Auteur(s): Secretariat
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On the examining of krill flux
Abstract: In connection with future calculation of volume of krill immigration/emigration (flux ... ) in the choosen polygones, the proves of active long-distance migrations of krill are considered ... results of calculations, is the valuation of krill retention time. To make it more correct and natural it ... is necessary to take into account the biological characteristics of krill, especially for the regions ...
Meeting Document : WG-EMM-95/19 : Auteur(s): Makarov, R.
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Distribution and abundance of krill in the vicinity of Elephant Island in the 1992 austral summer
Abstract: Krill distribution and abundance were estimated from four acoustic surveys, conducted ... surveys covered a 60 by 35 n.mi. area immediately north of Elephant Island. During the first survey, krill ... highest densities of krill were over the shelf extending to the northwest from Elephant Island and ... including the Seal Island archipelago; high densities of krill also extended off the shelf from the ...
Meeting Document : WG-CEMP-92/15 : Auteur(s): R.P. Hewitt and D.A. Demer (USA)
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On the problem of Soviet krill fishery allocation and intensity in the area of Elephant Island in the season of 1988-1989
Abstract: Microscale data, described the Soviet krill fishery off the Elephant Island (Subarea ... the scheme: 1) vessels enter the Elephant Island area and search for krill concentrations; 2) fishing ... has been lost. The velocity of krill concentration northeastward drift, calculated by the fleet ... , preyed on krill. Based on this and taking in account low fishery intensity the conclusion was made that ...
Meeting Document : WG-CEMP-92/30 : Auteur(s): V.A. Sushin and A.S. Myskov (Russian Federation)
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Interannual variability of standardised index of krill abundance in Area 48 according to CCAMLR fishery statistics database
CPUE in Subareas 48.1-48.3 and SSMUs did not correspond to the dynamics of krill density and biomass ... part of krill biomass rather than the total krill biomass in the area. The high variability and ... distributions of CPUE and krill biomass from acoustic surveys, huge confidential intervals of annual CPUE ... estimates evidence that inter-annual variability of standardized abundance index of krill obtained from ...
Meeting Document : WG-EMM-10/17 : Auteur(s): P.S. Gasyukov and S.M. Kasatkina (Russia)
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Method for collecting of data on traumatic death of krill passed through the trawl meshes
Abstract: Fishing for krill Euphasia superba Dana has been conducting using midwater trawls of ... different constructions including beam-trawl for several last decades. Not all krill in harvesting zone of ... krill individuals some part of them could pass through cover of net bag and escape of catch. In contact ... is applicable for rating of krill traumatic damage, received by it during trawling from cover of net ...
Meeting Document : WG-EMM-12/43 : Auteur(s): V.V. Akishin, I.G. Istomin, V.A. Tatarnikov, A.F. Petrov and R.O. Lebedev (Russia)
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Considerations about managing the krill fishery at small spatial and temporal scales
managing the krill fishery at small temporal and spatial scales. We highlight that the devil is in the ... coastal areas. Closed coastal areas potentially protect near-shore krill-dependent predators from the ... that krill demand from a range of predators in near-shore coastal habitats may only be met through ... oceanographic flow and krill movement. Krill flux and krill behaviour remains key to increased understanding ...
Meeting Document : WG-EMM-2019/22 : Auteur(s): P.N. Trathan, V. Warwick-Evans and E. Young
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Scientific requirements for an orderly development of the krill fishery
Abstract: At CCAMLR XXV Australia presented the results of the BROKE-West acoustic krill biomass ... precautionary catch limit for krill in Statistical Division 58.4.2 of 1.49 million tonnes (up from 450 000 ... to outline the scientific requirements related to the orderly development of the krill fishery, and ... krill fishery: (i) Undertake krill stock surveys in areas with no precautionary catch limits in order to ...
Meeting Document : WG-EMM-07/23 : Auteur(s): A. Constable, G. Slocum and S. Nicol (Australia)
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Comparison between the CCAMLR-2000 and KY 1988 surveys on environmental variability of krill in the Scotia Sea, Antarctica
Abstract: We assessed the environmental variability of Antarctic krill (Euphausia superba ... krill distribution. The sea ice cover in 1987/88 extended northward widely during the last winter season ... Antarctic Surface Water in 2000 reduced southward. Geographical distribution of krill, which approximates ... , the distribution of krill in 2000 reduced southward with low density. To generally understand the ...
Meeting Document : WG-EMM-02/43 : Auteur(s): M. Naganobu (Japan), M. Brandon (United Kingdom), K. Ito, K. Segawa (Japan) and V. Siegel (Germany)