Résultats de la recherche
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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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): E.Z. Samyshev
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Some properties of diagnostics of GLMM model tuning for standardising CPUE indices in the Area 48 using the CCAMLR fishery statistics database
Abstract: The data of krill fishery in Subarea 48 for 1986 – 2008 presented to CAMLR database by ... residuals significantly deviated from the normal distribution. The number of krill hauls, where Pearson’s ... of krill hauls in the CAMLR database for 1986 – 2008. It was shown that extremely high CPUE values ... indices estimation for krill fishery description claim special attention. The authors discussed several ...
Meeting Document : WG-EMM-11/44 : Auteur(s): P. Gasyukov and S. Kasatkina (Russia)
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Distribution of the Soviet fishing fleet and catches (CPUE) in Subdivision 48.3 during 1986–1990
Abstract: Analysis of the fishing fleet operation is one of preconditions of krill fishery small ... for the Soviet krill fishery in subdivision 48.3 for 1986-1980 (15 thousand hauls) were analyzed ... meander. On the basis of the materials presented some aspects of krill fishery and krill consuming animals ... competition between these species for krill resources. Author(s): V.A. Sushin, P.C. Gasiukov, A.V. Zimin and ...
Meeting Document : WG-EMM-02/63 Rev. 1 : Auteur(s): V.A. Sushin, P.C. Gasiukov, A.V. Zimin and S.M. Kasatkina (Russia)
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Ecosystem studies carried out during the second Ukrainian Marine Antarctic Expedition in Subareas 48.2 and 48.1 in 1998
specific features of the environmental conditions, state of the krill population, other functionally ... ), low abundance of krill larvae, plenty of salps (their abundance and biomass occurred to be higher 1.6 ... composition of krill and in its biomass on the fishing sites near the Elephant Island and the King George ... Island. In the former of them the basis of catches comprises krill of the third size group (evidently ...
Meeting Document : WG-EMM-00/5 : Auteur(s): V. Bibik and P. Gozhik (Ukraine)