Search results
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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.
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Indicators of krill flux at various spatial-temporal based on the data of multi-year research carried out in the Scotia Sea. Comments on krill fishery management
distribution of krill density, intensity of water flows (m³/s) and krill biomass (g/m³) transported by water ... understanding of krill biomass dynamic. It has been shown that the formation of transport of krill ... in the Scotia Sea requires both favorable dynamic conditions and krill influx from the Antarctic Pacific ... and the Weddell Sea. The data obtained demonstrate that the dynamics of krill biomass in a given area is more ...
Meeting Document : WG-EMM-2019/58 : Author(s): S. Kasatkina and V. Shnar
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Using the EPOC modelling framework to assess management procedures for Antarctic krill in Statistical Area 48: evaluating spatial differences in productivity of Antarctic krill
to evaluate management procedures for the Antarctic krill fishery. The key issues to be resolved ... in the development of a harvest strategy are whether (i) spatial differences in the productivity of krill give rise ... to differential affects on predators in different locations, (ii) movement of krill between locations ameliorate ... any local fluctuations in krill abundance and (iii) fishery behaviour could be constrained by regional ...
Meeting Document : WG-EMM-06/38 Rev. 1 : Author(s): A.J. Constable (Australia)
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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. (1992) relating potential krill yield to a pre ... by the Third and Fourth Meetings of Working Group on Krill. The most important of these extensions ... , as specified by the Fourth Meeting, results in marked reductions in the probabilities of krill spawning biomass ... and S. Chalis (South Africa) Title: Further computations of the consequences of setting the annual krill catch ...
Meeting Document : WG-KRILL-93/42 : Author(s): D.S. Butterworth, G.R. Gluckman, R.B. Thomson and S. Chalis (South Africa)
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A model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries on krill predators
on krill (Euphausia superba) predators, using the Adelie penguin (Pygoscelis adeliae) as a model organism ... . The model involves: (i) the description of the biomass and spatial distribution of krill; (ii) the effects ... of the fishery on the krill; (iii) the description of penguin breeding; and (iv) the indirect effects ... reproductive success and adult survival in the absence or presence of a fishery. The biomass of krill ...
Meeting Document : WG-EMM-98/48 : Author(s): M. Mangel and P.V. Switzer (USA)
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On the scientific observation and krill escape mortality in the krill fishery
or national scientific observer onboard krill fishing vessel became mandatory. In 2008, the Ukraine ... so as to provide more systematic coverage by international/national scientific observers in the krill ... fishery. Krill escapement mortality- and the methods to determine it- is closely connected with the need ... to have systematic observer coverage in the krill fishery. Experiments to estimate krill escapement ...
Meeting Document : CCAMLR-XXIX/45 : Author(s): Delegation of Ukraine
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On the need to determine the level of krill escapement mortality in the Antarctic krill fishery
Abstract: The krill escapement mortality and the methods to determine it are closely connected ... with the need to have systematic observer coverage in the Antarctic krill fishery. Experiments to estimate krill ... escapement mortality should be introduced on all krill fishing vessels that carry scientific observers ... onboard. To provide krill escapement mortality experiments it is proposed that data on speed of trawling ...
Meeting Document : WG-EMM-10/10 : Author(s): L. Pshenichnov and G. Milinevsky (Ukraine)
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Proposal for a krill biomass survey for krill monitoring and management in CCAMLR Division 58.4.2-East
Abstract: Australia plans to conduct a krill biomass survey in Division 58.4.2 East during 23 ... January to 25 March 2021. The survey will estimate krill biomass with a view to update the precautionary ... catch limit for krill. A krill observatory mooring system will also be deployed during the survey ... to further monitor seasonal dynamics of krill in the seasonally ice covered area. The survey is also designed ...
Meeting Document : WG-EMM-2019/03 : Author(s): S. Kawaguchi, M. Cox, N. Kelly, L. Emmerson and D. Welsford
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Do krill and salp compete? Contrary evidence from the krill fisheries
Abstract: Salp by-catch and krill discolouration ('green' krill) caused by active ... feeding on phytoplankton were analysed using logbook data from Japanese krill trawlers operating near ... blooms and the presence of green krill were analysed. No relationship between salp density ... and the proportion of green krill in the catches was evident when both salps and krill were taken together ...
Meeting Document : WS-AREA 48-98/4 Rev. 1 : Author(s): S. Kawaguchi (Japan), W.K. de la Mare (Australia), T. Ichii and M. Naganobu (Japan)
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Features of spatial and temporally distribution patterns of krill flux in the Scotia Sea: some comments on the development of a krill fishery management in Area 48.
Abstract: The spatial variability of krill flux in the Scotia Sea calculated by using ... distribution of krill density, water flow intensity (m 3 /s) and krill biomass (g/m3) transported by water flow ... to the Scotia Sea, were a subject of study. It is clearly illustrated that the geostrophic krill flux ... in the Scotia Sea requires both favorable dynamic conditions and availability of krill transported by the water ...
Meeting Document : WG-EMM-18/21 : Author(s): S. Kasatkina, V. Shnar and A. Malyshko