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Linking predator and prey behaviour: contrasts between Antarctic fur seals and macaroni penguins at South Georgia
are the two main land-based krill Euphausia superba consumers in the northern Scotia Sea. Using a ... these sympatric top predators during the austral summer and autumn of 2004. Krill availability derived ... from acoustic surveys was low during summer, increasing in autumn. During the breeding season, krill ... Electrona antarctica), with krill (33%) and amphipods (Themisto gaudichaudii; 21%) also occurring. When ...
Meeting Document : WG-EMM-10/P07 : Автор(ы): C.M. Waluda, M.A. Collins, A.D. Black, I.J. Staniland and P.N. Trathan
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Inter-annual variation in condition index of the mackerel icefish Champsocephalus gunnari
. High condition indices, indicative of good feeding conditions, were present when krill were abundant in ... the region. Years when krill were scarce and condition index was consequently low, were consistent ... with years when indices from land-based krill predators also indicated krill were scarce. Author(s ...
Meeting Document : WG-EMM-96/43 : Автор(ы): Parkes, G., Everson, I., Kock, K.-H.
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Short note on time series of Drake Passage Oscillation Index (DPOI) and its influence on environmental variability
and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... krill recruitment and density in the Antarctic Peninsula area with an environmental factor; strength of ... Oscillation Index (DPOI). They found significant correlations between krill recruitment and DPOI. Additionally ... on the variability of oceanic condition and thus for Antarctic krill ecosystem. Author(s): M ...
Meeting Document : WG-EMM-07/14 : Автор(ы): M. Naganobu and K. Kutsuwada (Japan)
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Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997
subject to commercial fishing since the early 1970s. They are known to feed predominantly on krill. An ... provide a good indicator of local krill density. The index is likely to be little affected by the ... reproductive cycle unless there is high krill availability during the months around the spawning time and even ... changes in hill density and therefore can provide indications of short term variations in krill ...
Meeting Document : WG-EMM-00/44 : Автор(ы): I. Everson (United Kingdom) and K.-H. Kock (Germany)
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Diet composition and observations on reproduction of Champsocephalus gunnari in Subarea 48.3 in March/April 1996, Dr Eduardo Holmberg survey
; (%) methods. Krill was by far the main food around South Georgia and Shag Rocks (F= 85%, Q= 99%). Other prey ... items, known as an important alternative food in years of krill scarcity, were ingested only ... higher than those reported for the 1991 and 1994 years of krill shortage. The analysis of the ovarian ... which may be related with a large availability of food (= krill). It is suggested that krill was present ...
Meeting Document : WG-FSA-96/28 Rev. 1 : Автор(ы): Marschoff, E., Barrera-Oro, E., Casaux, R.
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Variations in food composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) at South Georgia
/February 1991 and January 1992 by analyzing appr. 9,000 stomachs. Main prey items were krill (Euphausia ... of krill and Themisto in the diet items varied considerably between the three seasons, whereas the ... proportion of mysids in the diet remained fairly constant. krill is obviously the prefered diet. In years of ... krill shortage, such as in 1991, krill is replaced by Themisto gaudichaudii and sometimes Thysanoessa ...
Meeting Document : WG-FSA-92/26 : Автор(ы): K.-H. Kock (Germany), I. Everson (United Kingdom), S. Wilhelms (Germany), S. Campbell (United Kingdom), J. Szlakowski (Poland), G. Parkes (United Kingdom), Z. Cielniaszek (Poland) and C. Goss (United Kingdom)
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THE POWER OF ECOSYSTEM MONITORING
monitoring programme of the predators of Antarctic krill Euphausia superba at South Georgia together with a ... krill population model to simulate natural and fisheries induced variability in krill abundance, the ... effects of fishing using either the krill population or a combined predator response index was low (20–40 ... index than using the krill population itself. 4. The results indicate that although this monitoring ...
Meeting Document : WG-EMM-08/P11 : Автор(ы): K. Reid, J.P. Croxall and E.J. Murphy
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A proposal to subdivide CCAMLR Statistical Division 58.4.1 using environmental data
Abstract: A precautionary catch limit for krill was established for CCAMLR Division 58.4.1 in ... basis of environmental data. Krill is more abundant in the western subdivision and its biomass is more ... unequal distribution of krill in this Division, and because of its extremely large size (4.68 million km2 ... data collected on BROKE. The revised krill biomasss estimates for these areas are: 3.04 million tonnes ...
Meeting Document : WG-EMM-00/30 : Автор(ы): S. Nicol and T. Pauly (Australia)
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Short note: Time series of Drake Passage Oscillation Index (DPOI) during 1952-2008 and its possible influence on environmental variability
and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... krill recruitment and density in the Antarctic Peninsula area with an environmental factor; strength of ... Oscillation Index (DPOI). They found significant correlations between krill recruitment and DPOI. Additionally ... Antarctic krill ecosystem. Author(s): M. Naganobu, J. Kondo and K. Kutsuwada (Japan) Title: Short note ...
Meeting Document : WG-EMM-08/33 : Автор(ы): M. Naganobu, J. Kondo and K. Kutsuwada (Japan)
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THE STRUCTURE AND FUNCTIONING OF MARINE ECOSYSTEM IN ARGENTINE ISLANDS WATERS
toxic heavy metals. The pollution inhibits normal reproduction of Antarctic krill, the population ... recruitment of which is now owing to krill aggregations brought from other areas by sea currents. Krill ... the krill. Author(s): E.Z. Samyshev Title: THE STRUCTURE AND FUNCTIONING OF MARINE ECOSYSTEM IN ...
Meeting Document : WG-EMM-11/P5 : Автор(ы): E.Z. Samyshev
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