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1. Descriptive analysis of mesopelagic backscatter from acoustic data collected in the Ross Sea

   Abstract:  This report presents results from a pilot study to investigate the use of acoustics to estimate middle trophic level prey organisms (e.g., krill and mesopelagic fish) in the Ross Sea. Single frequency (38 kHz) acoustic data were available from New Zealand longline vessels participating

   Meeting Document : WG-EMM-06/11 : Author(s): R.L. O’Driscoll (New Zealand)

2. A spatial multi-species operating model (SMOM) of krill–predator interactions in small-scale management units in the Scotia Sea

   Abstract:  A Spatial Multi-species Operating Model (SMOM) of the underlying krill-predator-fishery dynamics is developed in response to requests for scientific advice regarding the subdivision of the precautionary catch limit for krill among 15 small-scale management units (SSMUs) in the Scotia Sea

   Meeting Document : WG-EMM-06/12 : Author(s): É. Plagányi and D. Butterworth (South Africa)

3. Time series of Drake Passage Oscillation Index (DPOI) from 1952 to 2006, Antarctica

   Abstract:  An assessment of the environmental processes influencing variability in the recruitment and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks affects the Antarctic marine ecosystem as a whole. Naganobu et al. (1999) had assessed variability

   Meeting Document : WG-EMM-06/13 : Author(s): M. Naganobu and K. Kutsuwada (Japan)

4. Progress towards a trophic model of the ecosystem of the Ross Sea, Antarctica, for investigating effects of the Antarctic toothfish fishery

   Abstract:  We report on the further development of a carbon-budget trophic-model of the Ross Sea with which to investigate effects of the fishery for Antarctic toothfish (Dissostichus mawsoni). The Ross Sea is a low primary production system, with production being localised in space and time. In

   Meeting Document : WG-EMM-06/14 : Author(s): M. Pinkerton, S. Hanchet and J. Bradford-Grieve (New Zealand)

5. An overview of a large ecosystem survey of the southwest Indian Ocean sector of the Southern Ocean (CCAMLR Division 58.4.2)

   Abstract:  This document outlines the preliminary results of an Australian survey of CCAMLR Division 58.4.2 (the South West Indian Ocean Sector of the Southern Ocean 30-80°E) in January-March 2006, which was designed around an acoustic biomass survey for krill and a large-scale oceanographic survey

   Meeting Document : WG-EMM-06/15 : Author(s): S. Nicol, S. Kawaguchi, T. Jarvis, G. Williams, N. Bindoff, D. Thiele (Australia), J. Schwarz (Germany), A. Davidson, S. Wright, J. Gedamke and P. Thompson (Australia)

6. Biomass of Antarctic krill (Euphausia superba) off east Antarctica (30–80°E) in January–March 2006

   Abstract:  A multidisciplinary, single-ship survey of CCAMLR Division 58.4.2 was conducted in January-March 2006, during which time multifrequency echosounder data were collected for the purposes of estimating the biomass (B 0) of Antarctic krill (Euphausia superba). The mean density of E. superba,

   Meeting Document : WG-EMM-06/16 : Author(s): T. Jarvis, E. van Wijk, N. Kelly, S. Kawaguchi and S. Nicol (Australia)

7. Winter distribution of chinstrap penguins from two breeding sites in the South Shetland Islands of Antarctica

   Abstract:  Satellite telemetry was used to determine the winter movements and distributions of eight chinstrap penguins known to breed at one of two colonies in the South Shetland Islands, Antarctic Peninsula region during the 2000 and 2004 austral winters. Six birds from a breeding site in

   Meeting Document : WG-EMM-06/17 : Author(s): W.Z. Trivelpiece, S. Buckelew, C. Reiss and S.G. Trivelpiece (USA)

8. Technical note on the sampling procedures of the Saga Sea

   Abstract:  At the 2005 Scientific Committee (the Committee) Meeting (CCAMLR), Norway indicated that a Norwegian-flagged vessel, “Saga Sea” would be fishing for krill in the 2005/06 fishing season using modified gear and trawl system. The Committee agreed that this new technology would not be

   Meeting Document : WG-EMM-06/18 : Author(s): J. Hooper (United Kingdom), T. Knutsen (Norway), D. Agnew (United Kingdom) and S.A. Iversen (Norway)

9. Further progress on modelling the krill–predator dynamics of the Antarctic ecosystem

   Abstract:  This paper addresses work conducted on the Mori-Butterworth multi-species model of the Antarctic ecosystem subsequent to the Ulsan meeting of the IWC Scientific Committee. Points raised about the model during that meeting are addressed in turn. Results are quoted that suggest that krill

   Meeting Document : WG-EMM-06/19 : Author(s): M. Mori (Japan) and D.S. Butterworth (South Africa)

10. A comparison of model predictions from KPFM1 and KPFM2

    Abstract:  We compare two versions of the krill-predator-fishery model to demonstrate the extent to which the predictions of KPFM1 can be reproduced with KPFM2. We also discuss the incorporation of seasonality into parameter estimates and a necessary change in the predator recruitment function of

    Meeting Document : WG-EMM-06/20 : Author(s): J. Hinke, G. Watters (USA), S. Hill and K. Reid (United Kingdom)

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