Search results
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Penguin foraging behavior in relation to the distribution of prey
of their primary prey, krill (Euphausia superba) in the vicinity of Seal Island, South Shetland Islands, Antarctica ... between January 19 and March 10 1992. Krill was found to show a distinct diel migration pattern, being ... was found to follow the diel migration pattern of the krill. On average, chinstrap penguins dove ... to the shallow limit of the distribution of krill. The maximum depth of penguin dives did not exceed the maximum ...
Meeting Document : WG-KRILL-93/47 : Author(s): D.A. Croll, R.P. Hewitt, D.A. Demer and J.K. Jansen (USA)
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Report of the Workshop for the International Coordinated Survey in conjunction with CCAMLR-2000 Survey
of the surveys are presented, and examination of these maps suggests three consistent area of high krill density ... Shirreff on the north side of Livingston Island. It appears that highest densities of krill move closer ... in the demographic structure of the population. The smaller size modes disappear and krill are more sexually mature ... , then the consistency between the four other surveys suggests low variability in krill biomass north of South Shetland ...
Meeting Document : WG-EMM-01/68 : Author(s): Delegations of Japan, Rep. of Korea, USA and Peru
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MULTIPLE INDICATORS SUGGEST A STRONG ECOSYSTEM ANOMALY AT SOUTH GEORGIA IN 2009
metrics for birds, seals and fish seems to be connected with the availability of Antarctic krill ... , surveys of krill and mackerel icefish, and monitoring of land-based predators. Each of these data sources ... warm water inflow were followed by reduced icefish catches, a paucity of krill in icefish and penguin ... diets and low krill biomass in the regularly surveyed “Western Core Box”. Consequently many ...
Meeting Document : WG-EMM-09/23 : Author(s): S. Hill, M. Belchier, M. Collins, S. Fielding, E. Murphy, P. Trathan, H. Venables and C. Waluda (United Kingdom)
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Relationships between distribution of two euphausiid species and oceanographic characteristics in the Ross Sea (January–February 2000)
, devoted to study two krill species (Euphausia superba and Euphausia crystallorophias), was carried out ... samples were considered the ground truth data, being compared to the acoustic estimates of krill species ... and size. Characteristics (dimensions, volume, weight, krill mean length) for each krill swarm were ... determined, and the krill average biomass per squared nautical miles was computed along the ship route track ...
Meeting Document : WG-EMM-02/38 : Author(s): A. Russo, M. Azzali, E. Biffi, G. Lanciani and E. Paschine (Italy)
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Population subdivision and distribution of Euphausia superba in the region of the Antarctic Peninsula and adjacent waters in relation to fishery development
-of the Antarctic Penunsula and adjacent waters points to a relationship between the distribution of krill ... of the Weddell Sea krill increases eastward, primarily in the Bransfield Strait but also off the Mordvinov Island ... of each of the two major modifications carry out krill into the eastern part of the region at different ... times. Isaacs-Kidd trawl surveys yielded krill biomass values of 1233±41% and 1708±30% thousand tons ...
Meeting Document : SC-CAMLR-VIII/BG/21 : Author(s): Delegation of USSR
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Analysis of the diet of Champsocephalus gunnari in Subarea 48.3, Dr E. Holmberg survey, February 1995
in the Subarea 48.3 in February 1995, were analyzed using the frequency of occurrence (%) method. Krill ... %), followed in importance by the mysid Thysanoessa sp. (35%) and krill (24%). The picture around SG was found ... to be similar to that observed in the E. Holmberg survey in February/March 1994: common levels of krill ... (also at Shag Rocks), close to the values reported for years of krill scarcity. While no krill ...
Meeting Document : WG-FSA-95/36 : Author(s): Marschoff, E., Barrera-Oro, E., Casaux, R.
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Integrating Climate and Ecosystem Dynamics in the Southern Ocean (ICED) programme: Report of the ICED–CCAMLR Projections Workshop, 5 to 7 April 2018
modellers and fisheries scientists to consider the potential impacts of climate change on Antarctic krill ... in a reduction in the abundance and biomass of krill in northern areas of the Scotia Sea but an increase ... capacity of krill to withstand such changes is poorly determined; The combined effects of changing sea ice ... and krill abundance will result in shifts in the distribution of the various krill-dependent species ...
Meeting Document : SC-CAMLR-XXXVII/BG/16 : Author(s): E. Murphy, N. Johnston, S. Corney and K. Reid
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Variations in the diet composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) at South Georgia (Antarctic)
in January/February 1985, January/February 1991 and January 1992. Main prey items were krill (Euphausia ... Thysanoessa species. The proportion of krill and Themisto in the diet varied considerably between the three ... seasons, whereas the proportion of mysids in the diet remained fairly constant. Krill which has a high ... energy content appears to be the prefered diet. In years of krill shortage, such as in 1991, krill ...
Meeting Document : WG-FSA-93/24 : Author(s): K.-H. Kock and S. Wilhelms (Germany), I. Everson (United Kingdom) and J. Gröger (Germany)
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Integrated environment–prey–predator interactions off South Georgia: implications for management of fisheries
local productivity, leads to relatively large concentrations of krill (Euphausia superba) in the region ... to management. The current system for managing krill harvests includes precautionary features that account ... for interannual variability in krill populations and the food requirements of natural predators. However ... , in future it may be possible to use information from the natural krill predators to set reasonable levels ...
Meeting Document : WG-EMM-01/27 : Author(s): I.L. Boyd (United Kingdom)
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Diet composition of Champsocephalus gunnari in Subarea 48.3, Dr Eduardo Holmberg survey, February/ March 1994
in February/March 1994 was analyzed using the frequency of occurrence (%) method. Krill (Euphausia superba ... , in parallel with the virtual absence of mysids and Thysanoessa spp.. Krill was available for fish in common ... of krill "shortage". Besides, the tentative analysis of part of the samples using the coefficient ... Q (%) showed a greater importance of T. gaudichaudii with respect to krill. It is possible ...
Meeting Document : WG-FSA-94/27 : Author(s): E. Barrera-Oro, R. Casaux and A. Roux (Argentina)