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1. 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)

2. 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)

3. 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)

4. 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)

5. Relationship between distribution of Antarctic krill (Euphausia superba) and environmental index MTEM-200 in the Antarctic Ocean throughout the year

   Abstract:  Antarctic krill (Euphausia superba) is the key species of the Antarctic marine ... oceanographic conditions have been an age-old recurrent problem and many papers have been published on the ... subject since the British Discovery Reports. However, there was no remarkable achievement in particular ... the entire Antarctic Ocean. To clarify the relationship between krill distribution of krill and ...

   Meeting Document : WG-EMM-08/32 : Автор(ы): M. Naganobu, T. Kitamura and K. Hasunuma (Japan)

6. 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)

7. Analysis of the stomach content in the blue-eyed shag Phalacrocorax atriceps bransfieldensis at Nelson Island, South Shetland Islands

   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 ... , predominated in frequency (58%) and in weight (65%), whereas Nototheniops nudifrons was the most important by ...

   Meeting Document : WG-CEMP-94/31 : Автор(ы): N. Coria, R. Casaux, M. Favero and P. Silva (Argentina)

8. 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)

9. Further development of pairwise tag detection performance index and its application to the stock assessment of toothfish in the Ross Sea fishery

   sustainable yields. The assessment model assumes that all vessels have equal tag detection rates; as a ... ) could lead to an over-estimate of the stock biomass. In this paper we develop further an index of vessel ... -specific tag detection performance for the Ross Sea fishery using a case-control methodology which controls ... for the inter-annual spatial and temporal variability of commercial fishing operations from which tags ...

   Meeting Document : WG-SAM-13/34 : Автор(ы): S. Mormede (New Zealand)

10. A spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region

    Antarctic toothfish in the Ross Sea region, for a medium scale spatial resolution (189 spatial cells ... ) covering the Ross Sea region. In this model run we spatially restrict the stock to cells where at least 5 ... % of the depth is deemed suitable as habitat for toothfish (120 cells – semi-restricted model), and ... compare with previous models where the stock was either restricted to the fished cells only (65 cells ...

    Meeting Document : WG-FSA-13/53 : Автор(ы): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

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