Résultats de la recherche
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Biotopic and spatial distribution of krill Euphausia superba Dana (Crustacea, Euphausiacea) length groupings in the Atlantic sector of Antarctic in summer 1984 and 1988
Abstract: Three basic length groupings of krill were identified with the clustering analysis on ... the basis of the data of two complex surveys carried out in the western Atlantic sector of Antarctic ... in summer 1984 and 1988. The large-length grouping is biotopically associated with the waters of the ... southern branch of the Antarctic Circumpolar Current (ACC). The middle-length grouping and the small-length ...
Meeting Document : WG-EMM-04/27 : Auteur(s): V.V. Lidvanov, A.V. Zimin, K.E. Shulgovsky (Russia)
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Sources of variance in studies of krill population genetics
Abstract: There is a long-term interest in the population genetics of Antarctic krill species ... because of their ecological end economic importance. The possibility that there are distinct genetic ... stocks of these species would affect the design of management strategies for conserving them. A recent ... resurgence of interest in identifying distinct stocks of swarming krill species has been driven by the ...
Meeting Document : WG-EMM-01/12 : Auteur(s): S.N. Jarman and S. Nicol (Australia)
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Growth rates of Antarctic fur seals as indices of environmental conditions
Abstract: The growth rates of Antarctic fur seal Arctocephalus gazella pups estimated from ... weighing cross-sections of the population were compared with measured/inferred changes in the the ... availability of their main prey species, Antarctic krill Euphausia superba from 1989-2000. There was no ... relationship between growth rate and mass at weaning and there were counterintuitive indications of higher ...
Meeting Document : WG-EMM-01/20 : Auteur(s): K. Reid (United Kingdom)
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Reassessment of important population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on time series of surveys and fishery data
over 11 years on this stock with other surveys including part of this stock. This paper describes the ... Abstract: A large body of data and techniques are available for re-assessing the biological ... parameters and recruitment of Patagonian toothfish, Dissostichus eleginoides, in the Heard Island region. A ... new survey of the Heard Island Plateau was undertaken in May- June 2001, providing the sixth survey ...
Meeting Document : WG-FSA-01/73 : Auteur(s): A.J. Constable, R. Williams, T. Lamb, I.R. Ball and E. van Wijk (Australia)
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A proposal for large scale sampling of krill in the diet of predators across Area 48 to coincide with the CCAMLR synoptic survey
Abstract: There is a high degree of spatial and temporal variability in the population of ... Antarctic krill Euphausia superba across the Scotia Sea. Resolution of the spatial component of this ... variability requires a 'snapshot' of the krill population over the region (eg the CCAMLR B0 survey ... ) whereas temporal changes have been addressed using time-series of samples from the diet of predators. At ...
Meeting Document : WG-EMM-99/33 : Auteur(s): K. Reid (United Kingdom)
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A model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries on krill predators
Abstract: We present a model at the level of the foraging trip for the effects of a fishery on ... . The model involves: (i) the description of the biomass and spatial distribution of krill; (ii) the ... effects of the fishery on the krill; (iii) the description of penguin breeding; and (iv) the indirect ... effects of the fishery on penguin reproduction and survival. The objective is to make relative comparisons ...
Meeting Document : WG-EMM-98/48 : Auteur(s): M. Mangel and P.V. Switzer (USA)
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Estimating the biodiversity of the sub-Antarctic Indian part for ecoregionalisation: Part I. Pelagic realm of CCAMLR areas 58.5.1 and 58.6
Abstract: Two studies are tabled for the Subantarctic pelagic area of CCAMLR areas 58.5.1 and ... 58.6, which covers the Crozet Basin and the north of the Kerguelen Plateau: one based on marine pelagic ... species (plankton and fish), and the second on top predators. In this report, we followed three types of ... bioregionalisation of the Southern Ocean based on abiotic and chlorophyll- a characteristics of the habitat only, and ...
Meeting Document : WS-MPA-11/10 : Auteur(s): P. Koubbi (France), P.A. Hulley (South Africa), B. Raymond (Australia), F. Penot, S. Gasparini, J.P. Labat, P. Pruvost (France), S. Mormède (New Zealand), J.O. Irisson, G. Duhamel and P. Mayzaud (France)
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OTOLITH-BASED AGEING OF THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS: MODELLING FIXED AND RANDOM READER ERROR USING MULTIPLE READINGS OF A REFERENCE COLLECTION
resulting from the imprecision of age determination using annual ring counts from otoliths. This paper ... assessment using repeat readings by 4 readers of a set of 203 reference otoliths sampled from the HIMI ... fishery. The methods of sampling, preparing, reading, and modelling random reader error for this reference ... set of otoliths is described. A total of 933 readings were taken and errors were defined as the ...
Meeting Document : WG-FSA-09/21 : Auteur(s): S.G. Candy, G.B. Nowara, D.C. Welsford and J.P. McKinlay (Australia)
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Report of the 1995/96 Japanese Whale Research Programme Under Special Permit in the Antarctic (JARPA) in Area IV and eastern part of Area III
Abstract: The ninth survey of the Japanese Whale Research Programme Under Special Permit in the ... Antarctic (JARPA) was carried out in the Antarctic Area IV (south of 60° S between 70°E and 130°E) and ... eastern part of Area In (south of 60° S between 35°E and 70°E). The survey was conducted for 118 days ... , from 26 November 1995 to 22 March 1996. The research fleet was composed of a research base vessel ...
Meeting Document : WG-EMM-96/48 : Auteur(s): Yuzu, S., Ishikawa, H., Mogoe, T., Kawasaki, M., Hishii, T., Shimamoto, K., Tohyama, D., Nibe, H., Taguchi, F., Hidaka, H., Ono, K., Yamashiro, K., Yoshida, T., Tamura, T., Nishiwaki, S.
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OTOLITH-BASED AGEING OF THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS: MODELLING FIXED AND RANDOM READER ERROR USING MULTIPLE READINGS OF A REFERENCE COLLECTION
resulting from the imprecision of age determination using annual ring counts from otoliths. This paper ... assessment using repeat readings by 4 readers of a set of 203 reference otoliths sampled from the HIMI ... fishery. The methods of sampling, preparing, reading, and modelling random reader error for this reference ... set of otoliths are described. A total of 933 readings were taken and errors were defined as the ...
Meeting Document : WG-SAM-09/07 : Auteur(s): S.G. Candy, G.B. Nowara, D.C. Welsford and J.P. McKinlay (Australia)