Résultats de la recherche

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

   to act as a surrogate for these in addition to the seals themselves. This results in an improved fit ... of the model to available abundance estimates for crabeater seals. A list of topics for possible ... estimates for the various krill predators is seen as a priority for improving the reliability of current ... models, and it is suggested that this should be a key focus of the proposed joint IWC-CCAMLR workshop on ...

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

2. An examination of latitudinal variation in the growth rates of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea

   Abstract:  Following a finding that a small sample of aged Dissostichus mawsoni from McMurdo Sound ... conducted. Length-at-age of Dissostichus mawsoni was compared across five zones in a 15.5° latitudinal range ... were insufficient older fish in the southernmost zone to enable a comparison with other areas. Any real ...

   Meeting Document : WG-FSA-03/30 : Auteur(s): P.L. Horn (New Zealand)

3. Progress on the application of an age-structured production model fitted to commercial catch-rate and catch-at-length data to assess the toothfish (Dissostichus eleginoides) resource in the Prince Edward Island vicinity

   allow the estimation of a selectivity-at-age function that decreases at larger ages. This is, in ... . In the meantime, based upon a cautious interpretation of projections over the wide range of current ... exceed a few hundred tonnes. Author(s):  A. Brandão and D.S. Butterworth (South Africa) Title:  Progress ...

   Meeting Document : WG-FSA-03/97 : Auteur(s): A. Brandão and D.S. Butterworth (South Africa)

4. Preliminary information on inshore demersal fish from the Danco Coast, Antarctic Peninsula, in the 1999/00 summer season

   Abstract:  A total of 1103 inshore notothenioid fish were caught by means of trammel-nets in four ... terms of number and mass with that of the South Shetland Islands area, except for a marked higher ... , A. Baroni and A. Ramón Title:  Preliminary information on inshore demersal fish from the Danco Coast ...

   Meeting Document : WG-FSA-00/63 : Auteur(s): R. Casaux, E. Barrera-Oro, A. Baroni and A. Ramón

5. Krill, salps and other dominant zooplankton taxa in the Elephant Island area during the 1997 austral summer

   /95. These occurred after a relatively early 1996 spawning season that theoretically should have ... ", followed a winter with relatively low sea-ice development. The other zooplankton collected ... included a diverse taxonomic assemblage. Copepods, salps, and postlarval Thysanoessa macrura were the ... various zooplankton taxa observed during January-February Survey A are described here. Author(s):  Puglise ...

   Meeting Document : WG-EMM-97/33 : Auteur(s): Puglise, K., Outram, D., Loeb, V.

6. ADULT ANTARCTIC KRILL FEEDING AT ABYSSAL DEPTHS

   Abstract:  Antarctic krill (Euphausia superba) is a large euphausiid, widely distributed within ... the Southern Ocean, and a key species in the Antarctic food web. The Discovery Investigations in the ... depth distribution and ecology of Antarctic krill, a central organism in the Southern Ocean ecosystem ... . Author(s):  A. Clarke and P.A. Tyler Title:  ADULT ANTARCTIC KRILL FEEDING AT ABYSSAL DEPTHS Approval ...

   Meeting Document : WG-EMM-08/P01 : Auteur(s): A. Clarke and P.A. Tyler

7. PROPOSED APPROACH FOR THE IDENTIFICATION OF IMPORTANT MARINE AREAS FOR CONSERVATION: USING ‘MARXAN’ SOFTWARE TO SUPPORT SYSTEMATIC CONSERVATION PLANNING

   Abstract:  We provide a worked example of how a systematic conservation planning methodology ... the pelagic environment, using Subarea 48.2 (South Orkney Islands) as a pilot study area. The aim of ... type of analysis could be used to inform the implementation of a range of actions to conserve marine ...

   Meeting Document : WG-EMM-08/49 : Auteur(s): S.M. Grant, J. Tratalos and P.N. Trathan (United Kingdom)

8. Catch per unit effort data from the early years of commercial krill fishing operations in the Atlantic sector of the Antarctic

   in single years, between years on a Subarea and Area basis, and between oceanic and shelf regions ... . Results show that the CPUE may differ between Subareas, years and shelf/oceanic regions. Obviously, a ... expressed in this regard. Depending on the circumstances a CPUE index may seriously under- or overestimate ... the amount of krill available in a Statistical Subarea. Overall length frequency distributions from ...

   Meeting Document : WG-EMM-97/22 : Auteur(s): Sushin, V., Siegel, V.

9. Echo integration in low signal to noise regimes: methods of noise estimation and removal

   kHz with a Simrad EK500 are presented to demonstrate the highly variable nature of background noise. A ... than several methods that apply a single background noise level to a data set. The dynamic technique ...

   Meeting Document : WG-EMM-97/74 : Auteur(s): Higginbottom, I., Pauly, T.

10. Biological acoustic survey in the marginal ice edge zone of the Bellingshausen Sea

    ) Southern Ocean investigations (TuRNER and OWENS, 1995). A total of 285 targets were identified and ... density varied from a mean of 42 g m-2 during the first survey phase to 19.6 g m-2 on the second survey ... phase. On this first survey a large swarm (2.8 km in extent) had a potential biomass of 3.7 x 104 tonnes ...

    Meeting Document : WG-Krill-94/32 : Auteur(s): A.W.A. Murray, J.L. Watkins and D.G. Bone (United Kingdom)

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