Search results
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
Paper Title: Further computations of the consequences of setting the annual krill catch limit ... to a fixed fraction of the estimate of krill biomass from a survey Abstract / Description: Butterworth et al ... potential krill yield to a pre-exploitation survey estimate of krill biomass. In this paper, the approach ... of the Working Group on Krill (WG-Krill). The most important of these extensions is integration over the ranges ... OF THE CONSEQUENCES OF SETTING THE ANNUAL KRILL CATCH LIMIT TO A FIXED FRACTION OF THE ESTIMATE OF KRILL BIOMASS ... of the harvesting model of Beddington and Cooke (1983) to relate potential krill yield to a pre-exploitation survey ... estimate of krill biomass. In this paper, the approach is extended further so as to incorporate most ... of the amendments specified by the Third and Fourth Meetings of the Working Group on Krill (WC-Krill). The most ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Author(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew
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Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index
Paper Title: Analysis of trends in Japanese krill fishery CPUE data, and its possible use ... as a krill abundance index Abstract / Description: Haul-by-haul logbook catch and effort data from ... the Japanese krill fishery for the 1980/81 to 2003/04 fishing seasons were analysed. For a number ... . The results strongly suggest that the krill fishery in the South Georgia area is operating at a critical level ... . 12 (2005): 1–28 ANALYSIS OF TRENDS IN JAPANESE KRILL FISHERY CPUE DATA, AND ITS POSSIBLE USE ... AS A KRILL ABUNDANCE INDEX S. Kawaguchi , S. Candy, S. Nicol Australian Antarctic Division Department ... Shizuoka, 424-8633 Japan Abstract Haul-by-haul logbook catch and effort data from the Japanese krill fi ... suggest that the krill fi shery in the South Georgia area is operating at a critical level of krill ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Author(s): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu
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Observations of fishing operations on a krill trawler and distributional behaviour of krill off Wilkes Land during the 1985/86 season
Paper Title: Observations of fishing operations on a krill trawler and distributional behaviour ... of krill off Wilkes Land during the 1985/86 season Abstract / Description: Japanese krill fishing ... Observations of fishing operations on a krill trawler and distributional behaviour of krill off ... Japanese krill fishing operations were observed on board a commercial vessel and the actual ... OPERATIONS ON A KRILL TRAWLER AND DISTRIBUTIONAL BEHAVIOUR OF KRILL OFF WILKES LAND DURING THE 1985/86 ... SEASON T. Ichii (Japan) Abstract Japanese krill fishing operations were observed on board ... of standardization when data from different vessels are to be used. Les operations de peche de krill japonaises ... differents navires. Resumen Se observaron operaciones pesqueras de krill japonesas a bordo de una nave ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 335-368 : Author(s): Ichii, T.
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Krill population biology during the 1991 Chilean Antarctic krill fishery
Paper Title: Krill population biology during the 1991 Chilean Antarctic krill fishery Abstract ... / Description: Population biology of Antarctic krill, Euphausia superba, was studied from samples taken in 1991 ... during krill fishing operations around the South Shetland Islands on board the Chilean factory vessel ... Krill population biology during the 1991 Chilean Antarctic krill fishery ... WG-KRILL-92/33 KRILL POPULATION BIOLOGY DURING THE 1991 ... CHILEAN ANTARCTIC KRILL FISHERY A. Mujica R, E. Acufia S. and A. Rivera 0.* Abstract * Population ... biology of Antarctic krill, Euphausia superba, was studied from samples taken in 1991 during krill ... Antarctic Institute). Resume Etude de la biologie des populations du krill antarctique, Euphausia ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 223–235 : Author(s): Mujica R., A., E. Acuña S. and A. Rivera O.
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Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during 1990/91 austral summer
Abstract: Acoustic and net sampling surveys for krill were conducted in the krill fishing area ... heterogeneities in abundance and maturity of krill were observed. The survey region was divided into four zones ... ; oceanic, slope frontal, neritic and nearshore zones. The mean density of krill was low in the oceanic zone ... krill into this zone. The total biomass over the survey region was estimated to be 1.59 ± 0.45 million ...
Meeting Document : WG-KRILL-92/26 : Author(s): T. Ichii, H. Ishii and M. Naganobu (Japan)
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The distribution pattern and fishery for the Antarctic krill (Euphausia superba) off the Wilkes Land and Balleny Islands (with notes on the application of CPUE data as indices of krill abundance)
Abstract: Hydrological conditions, the distributiion pattern of krill and characteristics ... of the Soviet krill fishery off the Wilkes Land and Balleny Islands in 1988 and 1989 are described ... °- 150° E) are likely to be. an area of regular occurence of krill concentrations, probably the frequency ... with the quasi-stationary eddy, its southern branch is expressed as the East Wind Drift. Krill in fishable ...
Meeting Document : WG-KRILL-90/16 : Author(s): V.N. Dolzhenkov, E.A. Kovalev, V.A. Spiridonov, V.P. Timonin, I.A. Zhigalov (USSR)
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Incorporation of a model of krill recruitment into the Butterworth et al. Stochastic krill dynamics model (SKDM)
Abstract: The method of simulating recruitment variability using observed ratios of 0 year krill ... to the total population is validated and tested. The method also links natural mortality to krill recruitment ... . Incorporation into the SKDM increases the variability of the krill population dynamics predicted by the model ... (Secretariat) Title: Incorporation of a model of krill recruitment into the Butterworth et al. Stochastic ...
Meeting Document : WG-Krill-94/05 : Author(s): D.J. Agnew (Secretariat)
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
Abstract: The results of Butterworth et al. (1991) relating potential krill yield to a pre ... -exploitation survey estimate of krill biomass are extended as specified by the Third Meeting of Working Group ... on Krill. The most important of these extensions is integration over the ranges of uncertainty for a number ... in summer (near-coincident with the period of krill growth), or throughout the year, allows a greater catch ...
Meeting Document : WG-KRILL-92/04 : Author(s): D.S. Butterworth, G.R. Gluckman and S. Chalis (South Africa)
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Towards a new method for age determination in Antarctic krill, and evidence that krill shrink under natural conditions
Abstract: Laboratory studies have shown that Antarctic krill Euphausia superba shrink ... individuals may be shrinking in the field during winter. If krill shrink during the winter, conclusions ... a laboratory population, it appears that when krill shrink, the crystalline cone number remains relatively ... -length offers a method for detecting the effect of shrinking in natural populations of krill ...
Meeting Document : WG-Krill-94/17 : Author(s): W. de la Mare (Australia)
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On the very high likelihood of bycatch of ice krill (Euphausia crystallorophias) in the present-day fishery for Antarctic krill (E. superba)
Abstract: During open discussions at the Third International Symposium on Krill (St Andrews ... , Scotland, June 2017) attended by representatives of the Association of Responsible Krill harvesting ... krill (Euphausia crystallorophias) had been reported from fishing vessels targeting Antarctic krill ... as a condition of their fishing permits to report all bycatch. Since the present-day Antarctic krill fishery ...
Meeting Document : WG-EMM-18/05 : Author(s): A.S. Brierley and R. Proud