Comment on “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” (WG KRILL 92/4)
of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey ... ” (WG KRILL 92/4) Approval: Approved ... Comment on “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” (WG KRILL 92/4) ...
Meeting Document : WG-KRILL-92/28 : Author(s): H. Hiramatsu (Japan)
An experimental approach for the Antarctic krill fishery: advancing management and conservation through the use of Krill Reference Areas and Krill Fishing Areas
Abstract: We review reasons why the fishery for Antarctic krill is challenging to manage ... to fishing, coupled with the use of Krill Reference Areas and Krill Fishing Areas. We use the existing Small ... and approaches could be used to enhance ecological understanding of possible impacts (or lack thereof) of krill ... the management of the krill fishery. We welcome comments and suggestions to help improve the concepts ...
Meeting Document : WS-SM-18/05 : Author(s): P.N Trathan and O.R. Godø
A candidate process for managing the krill fishery at a local scale for krill predators, particularly in the early phases of the development of the krill fishery
Abstract: In this paper, we develop a candidate management system for the krill fishery suitable ... for achieving objectives for krill and its predators in local areas. We also indicate how this management system ... ecosystem. A local area decision rule is proposed for using krill biomass density and recruitment strength ... , D. Welsford and J. Melbourne-Thomas (Australia) Title: A candidate process for managing the krill fishery ...
Meeting Document : WG-EMM-15/55 Rev. 1 : Author(s): A. Constable, S. Kawaguchi, C. Southwell, L. Emmerson, W. de la Mare, P. Ziegler, D. Welsford and J. Melbourne-Thomas (Australia)
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)
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)
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)
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)
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)
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
A model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries on krill predators
Abstract: 1. Although the development of fisheries for krill in the southern oceans has prompted ... considerable work on the indirect effects of fisheries on krill predators, to date all work has focused ... for the effects of a fishery on krill predators, using the Adelie penguin (Pygoscelis adeliae) as a model organism ... . 2. The model has four main components: the description of the spatial and•temporal pattern of krill, ii ...
Meeting Document : WG-EMM-96/20 : Author(s): Switzer, P.V., Mangel, M.