Search results
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Methodological guidelines on the assessment of krill trawls catchability by means of statistical modelling (available in Russian only)
Author(s): Delegation of the USSR Title: Methodological guidelines on the assessment of krill ...
Meeting Document : SC-CAMLR-V/BG/38 : Author(s): Delegation of the USSR
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Comparisons in diet between diurnal and overnight foraging chinstrap penguins at Seal Island
. Diet mass estimated from digested and intact stomach contents indicates that krill were predominant ... . The highest intake of fish was observed in 1993/94 when krill abundance was very low. Calorific values ... forager (5732 kJ) based on available input parameters. A comparison of krill in the diet and those ... in the foraging areas indicates that diurnal foragers took krill in the inshore region, where krill tended ...
Meeting Document : WG-EMM-96/55 : Author(s): Hayashi, T., Ichii, T., Cameron, M.F., Miura, A., Jansen, J.K., Bengtson, J.L., Boveng, P.
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At-sea distribution and prey selection of Antarctic petrels and commercial fisheries
like seabirds. In the Southern Ocean, there is an extensive fishery for Antarctic krill Euphausia ... operations versus predators is needed to predict fishery-related impacts on krill-dependent predators ... of the Antarctic krill fisheries and the distribution of a krill dependent seabird, the Antarctic petrel ... fishing areas, during three consecutive seasons. The overall spatial overlap between krill fisheries ...
Meeting Document : WG-EMM-16/P15 : Author(s): S. Descamps, A. Tarroux, Y. Cherel, K. Delord, O.R. Godø, A. Kato, B.A. Krafft, S.-H. Lorentsen, Y. Ropert-Coudert, G. Skaret and Ø. Varpe
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CCAMLR 2000 revisited
Abstract: The total abundance of krill in the Scotia Sea was estimated from an international ... ) to revise the precautionary catch level for krill in the area from 1.5 to 4 Mt (SC-CAMLR, 2000 ... ). By incorporating recent improvements in the remote identification and target strength (TS) of krill, a range ... of krill biomass was estimated, 108.0 Mt (CV=10.4%) to 192.4 Mt (CV=11.7%), depending solely ...
Meeting Document : WG-EMM-07/30 Rev. 1 : Author(s): D.A. Demer, A.M. Cossio and C.S. Reiss (USA)
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An attempt to derive a composite index of abundance from acoustic surveys and fishery data
Abstract: Maps of krill (Euphausia superba) density derived from acoustic survey data ... and the distribution of fishing effort in the Chilean krill fishery indicate an area of high krill density wrapping ... , the distribution of catch-per-fishing-time and krill density (measured acoustically) show similar forms. Search ... time could not be used to estimate other aspects of krill distribution pattern because fishing ...
Meeting Document : WG-Krill-94/14 : Author(s): R.P. Hewitt (USA), V. Marín (Chile) and D. Demer (USA)
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The diet of Antarctic fur seals Arctocephalus gazella during the breeding season at South Georgia
was investigated during the pup rearing period (January- March) of 1991-1994. Antarctic Krill Euphausia superba ... in 5%. There was considerable intra and inter-annual variation in the characteristics of krill taken by fur seals ... . The distribution of krill sizes taken suggest that fur seals are not actively selecting particular sizes of krill ... and, therefore, that the krill in the diet reflects the krill available around South Georgia. The absence ...
Meeting Document : WG-EMM-95/28 : Author(s): Arnould, J.P.Y., Reid, K.
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On problem of natural subdividing of Antarctic krill’s geographic area (an application to the monitoring of fishing)
Abstract: The possibilities of natural regionisation of antarctic krill's geographic area ... structure of krill's geographic area. More then 43% of regions, where usually present concentrations ... of krill (this percent includes all recently acting fishery regions) lay inside of secondary fronts ... . These fronts are natural boundaries of supposed krill's stocks (subpopulations). Such position of regions ...
Meeting Document : WG-KRILL-93/37 : Author(s): R.R. Makarov and L.L. Menshenina (Russia)
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Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem
in the East Antarctica ecosystem in the context of two hypotheses, the ‘krill surplus’ hypothesis ... in the middle of the past century and the recovery of krill-eater large whales since the 1980 ... ’s. There was an interest to investigate the effects of those events on other krill predators such as the Antarctic minke ... Antarctica (70°E-170°W) showed that the increased krill availability in the middle of the past century could ...
Meeting Document : WG-EMM-16/64 : Author(s): Y. Fujise and L.A. Pastene
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Cycles of Euphausia superba recruitment evident in the diet of Pygoscelid penguins and net trawls in the South Shetland Islands, Antarctica
Abstract: Size and sex of Antarctic krill taken from chinstrap and gentoo penguin diet were ... to evaluate penguin diet as a sampling mechanism and to look at trends in krill populations. Both penguin diet ... and net samples revealed a 4-5 year cycle in krill recruitment with one or two strong cohorts sustaining ... the population during each cycle. Penguin diet samples contained adult krill of similar lengths to those caught ...
Meeting Document : WG-EMM-07/P2 : Author(s): A. Miller and W. Trivelpiece (USA)
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Spatial distribution of predator/prey interactions in the Scotia Sea: implications for measuring predator/fisheries overlap
for Antarctic krill Euphausia superba in the South Shetland Islands have used different measurement scales ... and arrives at contradictory conclusions. At-sea data from observations of krill predators during the CCAMLR ... 2000 krill survey were used to identify the areas of potential overlap with fisheries in the Scotia Sea ... and sampling distance was used to identify the characteristic scales of the distribution of predators, krill ...
Meeting Document : WG-EMM-02/14 : Author(s): K. Reid, M. Sims, R.W. White and K.W. Gillon (United Kingdom)