Resultados de la búsqueda
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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
krill and the waters of two major circulation systems- those of the Weddell Sea and the Bellingshausen ... while the proportion of the Weddell Sea krill increases eastward, primarily in the Bransfield Strait but ... result from the fact that waters 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 ...
Meeting Document : SC-CAMLR-VIII/BG/21 : Autor(es): Delegation of USSR
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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 ... reduction in the abundance and biomass of krill in northern areas of the Scotia Sea but an increase in ... 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 : Autor(es): E. Murphy, N. Johnston, S. Corney and K. Reid
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Propuesta de un taller para la calibración de las técnicas de diferentes laboratorios para la determinación de la edad del kril
Abstract: The Working Group stressed the urgency of standardising ageing method for krill ... . Information on krill age is fundamental to establishing an accurate growth curve and to calculate a ... standardise krill ageing protocol, as outlined in WG-EMM-19/45. We seek Scientific Committee’s endorsement of ... the draft terms of reference and the budget for the Krill Ageing workshop as described in this paper ...
Meeting Document : SC-CAMLR-38/13 : Autor(es): Delegations of Australia, China, Japan, Norway and the USA
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Variations in the diet composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) at South Georgia (Antarctic)
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 is ...
Meeting Document : WG-FSA-93/24 : Autor(es): K.-H. Kock and S. Wilhelms (Germany), I. Everson (United Kingdom) and J. Gröger (Germany)
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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 ... Georgia, in parallel with the virtual absence of mysids and Thysanoessa spp.. Krill was available for fish ... 1991 year 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 ...
Meeting Document : WG-FSA-94/27 : Autor(es): E. Barrera-Oro, R. Casaux and A. Roux (Argentina)
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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 ... approaches 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 ...
Meeting Document : WG-EMM-01/27 : Autor(es): I.L. Boyd (United Kingdom)
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Fishing and conservation in southern waters
Abstract: Fishing in the Southern Ocean commenced on finfish in 1969/70 and on krill in 1972/73 ... . The krill catch from the Southern Ocean has been 4.9 million tonnes to date. More than 90 % of this ... potential for direct competition between krill fisheries and krill-dependent predators. Potential impacts of ... krill and finfishing on the ecosystems of the Southern Ocean range from endangering recruitment due to ...
Meeting Document : SC-CAMLR-XII/BG/11 : Autor(es): Delegation of Germany
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Important aspects of prey distribution for the formation of foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island
inshore are: 1) proximity to breeding colonies and 2) high krill (Euphausia superba) abundance, whereas ... those of foraging slope/offshore are: 3) less patchy krill distribution, 4) shallow krill distribution ... , 5) larger krill size and 6) occurrence of energy-rich bioluminescing myctophid fish at night ... , feeding success may not be necessarily associated with dense aggregation of krill, but with distribution ...
Meeting Document : WG-EMM-97/28 : Autor(es): Bengtson, J.L., Hiruki, L.M., Naganobu, M., Ichii, T., Meyer, W.R., Cameron, M.F., Boveng, P., Takao, T., Miura, A., Jansen, J.K., Kawaguchi, S., Hayashi, T.
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Climate change and zooplankton dominance in the Antarctic marine ecosystem: implications for the food web
major factor regulating recruitment and population size of Antarctic krill (Euphausia superba) and ... population dynamics of salps (Salpa thompsoni). Strong krill recruitment success there follows years of ... sea-ice. An order of magnitude decrease of krill population size, increased incidence of massive salp ... blooms, and decreased abundance of krill-dependent Adelie penguins (Pygoscelis adeliae) in the past 15 ...
Meeting Document : WG-EMM-96/21 : Autor(es): Siegel, V., Fraser, W., Trivelpiece, S., Holm-Hansen, O., Loeb, V., Hewitt, R., Trivelpiece, W.
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Warming effects in the Western Antarctic Peninsula Ecosystem: the role of population dynamic models for explaining and predicting penguin trends
complex links between climatic variables, primary productivity, krill and avian predators. There are ... several studies reporting statistical relationships between climate, krill and penguins population size ... influenced by the inter-annual variability in the sea-ice extent and krill biomass. In this paper we ... developed simple conceptual models for decipher the role of climate and krill fluctuations on the population ...
Meeting Document : WG-EMM-12/18 : Autor(es): M. Lima and S.A. Estay (Chile)