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Dynamic of the krill fishery in the Area 48 and its relation to climate variability and changes in fishing technology
Abstract: The authors analyzed the spatial-temporal structure of standardized indices of catch ... per effort unit (CPUE) of Antarctic krill fishery in the Area 48 in relation to dynamic of ААО ... indices (Antarctic Oscillation Index) as one of the factors used in analysis of inter-annual and long ... -period fluctuations of hydrometeorological conditions at high latitudes of the southern hemisphere ...
Meeting Document : WG-EMM-13/25 : Автор(ы): P.S. Gasyukov and S.М Kаsatkina (Russia)
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Some characteristics of krill transport in the Scotia Sea based on the Russian survey data
Abstract: In this work the characteristics of krill transport across the SSMUs determined on the ... based on the long-term data from 3012 stations and respective time intervals when the water mass in the ... study area was totally replaced are presented. It is shown that in SSMUs the multiple total replacement ... be accompanied with krill biomass transport across the boundaries of the SSMUs. Our estimates of ...
Meeting Document : WG-EMM-05/41 : Автор(ы): S.M. Kasatkina, V.N. Shnar and O.V. Berezhinsky (Russia)
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Modelling the predator–prey interactions of krill, baleen whales and seals in the Antarctic ecosystem
Abstract: The history of human harvests of seals, whales, fish and krill in the Antarctic is ... summarized briefly, and the central role played by krill emphasized. The background to the hypothesis of a ... krill surplus in the mid 20th Century is described, and the information on population and trend levels ... that has become available since the postulate was first advanced is discussed. The objective of the ...
Meeting Document : WG-EMM-05/34 : Автор(ы): M. Mori and D.S. Butterworth (South Africa)
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Interannual variability of the South Georgia marine ecosystem: biological and physical sources of variation in the abundance of krill
Abstract: Interannual variability is a characteristic feature of the Southern Ocean ecosystem yet ... the relative roles of biological and physical processes in generating these fluctuations are unknown ... krill (Euphausia superba) in the South Georgia area, and that the variation affects much of the ... ecosystem with the most obvious impacts on survival and breeding success of some of the major krill ...
Meeting Document : WS-AREA 48-98/8 : Автор(ы): E.J. Murphy, J.L. Watkins, K. Reid, P.N. Trathan, I. Everson, J.P. Croxall, J. Priddle, M.A. Brandon, A.S. Brierley (UK) and E. Hofman (USA)
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Environmental variability and the behavioural dynamics of Antarctic fur seals in the South Atlantic
Abstract: Variability in the reproductive performance of marine predators may be a result of ... physical forcing by large-scale oceanographic variability. Time lags, remoteness from the epicentre of a ... physical process and the simultaneous action of multiple physical processes often mean that it is difficult ... . This study examined variation in the foraging behavior of lactating Antarctic fur seals (Arctocephalus ...
Meeting Document : WS-AREA 48-98/16 : Автор(ы): I.L. Boyd (UK)
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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
calibration require an ageing error matrix as input in order to adequately account for uncertainty in the data ... resulting from the imprecision of age determination using annual ring counts from otoliths. This paper ... describes the methods and results used to provide an ageing error matrix to the HIMI toothfish integrated ... assessment using repeat readings by 4 readers of a set of 203 reference otoliths sampled from the HIMI ...
Meeting Document : WG-FSA-09/21 : Автор(ы): S.G. Candy, G.B. Nowara, D.C. Welsford and J.P. McKinlay (Australia)
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A RISK ASSESSMENT TO ADVISE ON STRATEGIES FOR SUBDIVIDING A PRECAUTIONARY CATCH LIMIT AMONG SMALL-SCALE MANAGEMENT UNITS DURING STAGE 1 OF THE STAGED DEVELOPMENT OF THE KRILL FISHERY IN SUBAREAS 48.1, 48.2, AND 48.3.
Abstract: We used Foosa and the reference set of parameterizations developed by Watters et al ... . (2008) to assess the risks and tradeoffs associated with various management strategies for subdividing ... the precautionary krill catch limit among SSMUs in Area 48. Our methodological approach follows ... directly from specifications made by the WG-SAM and the WG-EMM. We predict that the tradeoffs inherent in ...
Meeting Document : WG-EMM-08/30 : Автор(ы): G.M. Watters, J.T. Hinke (USA) and S. Hill (United Kingdom)
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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
calibration require an ageing error matrix as input in order to adequately account for uncertainty in the data ... resulting from the imprecision of age determination using annual ring counts from otoliths. This paper ... describes the methods and results used to provide an ageing error matrix to the HIMI toothfish integrated ... assessment using repeat readings by 4 readers of a set of 203 reference otoliths sampled from the HIMI ...
Meeting Document : WG-SAM-09/07 : Автор(ы): S.G. Candy, G.B. Nowara, D.C. Welsford and J.P. McKinlay (Australia)
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Analysis of the stomach content in the blue-eyed shag Phalacrocorax atriceps bransfieldensis at Nelson Island, South Shetland Islands
complemented with information on shags’ foraging trips, obtained in the field by film records. Author(s): N ... Abstract: Forty stomach contents of the blue eyed shag Phalacrocorax bransfieldensis were sampled ... at Nelson Island, South Shetland Islands, in January 1994. The analysis of the diet showed that fish ... were by far the main component, followed by octopods, polychaetes and gammarids. Notothenia coriiceps ...
Meeting Document : WG-CEMP-94/31 : Автор(ы): N. Coria, R. Casaux, M. Favero and P. Silva (Argentina)
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A simulation study of the method of refining the natural mortality coefficient with Champsocephalus gunnari in Subarea 48.3 used as an example
Abstract: The method of refining the natural mortality coefficient is based on the notion that ... the free component of the regression equation between the mean-weighted coefficient of natural ... mortality as defined by the VPA and fishing effort must be equal to zero if the natural mortality ... shown that the proposed method facilitates such a refinement. When a mistake is made in the choice of ...
Meeting Document : WG-FSA-91/25 : Автор(ы): P.S. Gasiukov and R.S. Dorovskikh (USSR)
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