Résultats de la recherche

1. Update on the external review of the Generalised Yield Model (GYM) software and manual

   could then evaluate tenders at the meeting of WG-FSA in October 2004, and SC-CAMLR-XXIII could consider ... Abstract:  In 2003, WG-FSA requested that the Secretariat supervise an external review of the GYM ... included: • Members providing guidance on the scope of the review; • Members proposing appropriate ... independent experts to conduct the review; • Reviewer to complete the review by end of June 2004 and report to ...

   Meeting Document : WG-FSA-SAM-04/05 : Auteur(s): CCAMLR Secretariat

2. On the intensity of sampling krill trawl catches

   (e.g. length-with-age). At present, and in the interests of both statistical rigour and the efficiency ... most purposes a minimum sample size of at least 100 animals/trawl is necessary to obtain statistically ... of determining adequate sample size to obtain representative krill length frequency distributions ... from commercial catches. In addition, the possible effect of two other factors (within-trawl ...

   Meeting Document : WG-KRILL-90/27 : Auteur(s): D.G.M. Miller (South Africa)

3. Abundance and richness of key Antarctic seafloor fauna correlates with modelled food availability

   show that fluctuating seabed currents are crucial in the redistribution of surface productivity at the ... Abstract:  Most seafloor communities at depths below the photosynthesis zone rely on food that ... sinks through the water column. However, the nature and strength of this pelagic–benthic coupling and ... its influence on the structure and diversity of seafloor communities is unclear, especially around ...

   Meeting Document : WS-SM-18/P01 : Auteur(s): J. Jansen, N.A. Hill, P.K. Dunstan, J. McKinlay, M.D. Sumner, A.L. Post, M.P. Eléaume, L.K. Armand, J.P. Warncock, B.K. Galton-Fenzi and C.R. Johnson

4. Fine-scale genetic investigation into Patagonian toothfish structure within the west Indian Ocean sector of the Southern Ocean

   Abstract:  Molecular markers were employed to investigate the fine-scale stock structure of ... Patagonian toothfish in the west Indian Ocean sector of the Southern Ocean. Four collections of toothfish ... genetically using two fragments of mtDNA and seven nuclear microsatellite loci. MtDNA haplotype diversity was ... moderate; ranging from 0.331 to 0.343. Allelic variation at the seven microsatellite loci was widespread ...

   Meeting Document : WG-FSA-03/66 : Auteur(s): S.A. Appleyard, R. Williams and R.D. Ward (Australia)

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

   Abstract:  The results of acoustic surveys, especially in low signal-to-noise regimes, are ... sensitive to the method used to exclude the contribution of background noise from the acoustic data. The use ... of thresholds to reject weak signals during data collection is inappropriate because the noise ... log unthresholded data and to correct for noise in post processing. Integrated data collected at 120 ...

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

6. TEMPORAL CLARIFICATION OF THE TRANSITION FROM BLUE PHASE FINGERLING TO EARLY JUVENILE BROWN PHASE IN NOTOTHENIA ROSSII FROM THE SOUTH SHETLAND ISLANDS

   of controversy in the literature: 1) we believe that the duration of the pelagic fingerling stage at ... by combining age/length data of the juvenile phase of N. rossii from this and a previous study at ... Abstract:  Scales and whole otoliths were read for age determination of early stages of Notothenia ... rossii caught in Potter Cove, South Shetland Islands, in summer of years 2003-2006 and 2008. The sample ...

   Meeting Document : WG-FSA-09/32 : Auteur(s): E. Barrera-Oro, E. Moreira, N. Alescio and E. Marschoff (Argentina)

7. Review of activities in monitoring marine debris in the CAMLR Convention Area

   colonies of grey-headed albatrosses and black-browed albatrosses at Bird Island has increased recently, and ... -fishing items such as packaging and wood remain the most common type of debris items found in beach ... found in beach surveys with closed bands found at Bird Island (1) and King George Island (3), despite ... Conservation Measure 26-01 requiring packaging bands to be cut up into 30 cm pieces. The amount of debris in ...

   Meeting Document : WG-IMAF-11/04 Rev. 1 : Auteur(s): Secretariat

8. Susceptibility to oxidative stress in different species of Antarctic birds: preliminary results

   maccormicki), breeding at Edmonson Point (Wood Bay, Ross Sea). At the time of sampling, Adélie penguins were ... against toxicity of reactive oxygen species (ROS). These highly reactive molecules are normally produced ... during the 4-electrons reduction of molecular oxygen to water coupled with oxidative phosphorylation and ... during the activity of several enzymatic systems which produce ROS as intermediates. If the antioxidant ...

   Meeting Document : WG-EMM-99/59 : Auteur(s): S. Corsolini, F. Regoli, S. Olmastroni, M. Nigro and S. Focardi (Italy)

9. Relative selectivity of four sampling methods using traps and trawls for male snow crabs (Chionoecetes opilio)

   deployed during the day. and (4) bottom trawl deployed at night. Catches were characterized in terms of ... , were larger than those caught in the trawl; the size of crabs caught in the trawl at night was larger ... Abstract:  Catch rate and catch composition of male snow crabs were compared for four sampling ... crab body sizes, shell conditions, and claw allometry. We concluded that: 1) mean and modal size of ...

   Meeting Document : WS-CRAB-93/11 : Auteur(s): J.M. Hoenig and E.G. Dawe (USA)

10. Distribution and biology of grey notothen (Lepidonotothen squamifrons) around South Georgia and Shag Rocks (Southern Ocean) CCAMLR Subarea 48.3.

    during groundfish surveys at South Georgia and Shag Rocks from 1986 to 2012 were analysed to investigate ... east of Shag Rocks and the west of South Georgia. Reliable biomass estimates were not possible due to ... recognisable cohort progression and a trend of increasing size over time indicating a potential recovery of the ... stock. Mean length at first maturity for males and females (37-38cm) was very similar to that described ...

    Meeting Document : WG-FSA-12/34 : Auteur(s): S. Gregory, J. Brown and M. Belchier (United Kingdom)

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