Résultats de la recherche

1. A von Bertalanffy growth model for Division 58.5.2 fitted to length-at-age data and a comparison of predicted with observed growth from mark–recapture data

   variable probability (VP) sampling of fish that were aged. Sub-sampling of random length frequency (LF ... selectivity curve is described elsewhere and assumed known for this study with its most important feature ... the length-at-age data assuming normal errors with constant coefficient of variation using iteratively ... VB curve fitted using the same error model and VP maximum likelihood (MLP) with length-bin relative ...

   Meeting Document : WG-FSA-SAM-06/07 : Auteur(s): S.G. Candy, A.J. Constable, T. Lamb and R. Williams (Australia)

2. AERIAL SURVEYS OF WEDDELL SEALS DURING 2007-08, WITH NOTES ON THE HISTORY OF AERIAL CENSUSES IN THE ROSS SEA AND RECOMMENDATIONS FOR CONTINUED COUNT EFFORT

   Weddell seals along the Victoria Land coast. That area would be important to monitor changes in ... variability and the variance that could be expected over a time when the Ross Sea system was without influence ... program can now be put into effect under CEMP, begun with a one-time survey to identify all important haul ... Abstract:  Weddell seals (Leptonychotes weddellii) have proved to be an important predator of ...

   Meeting Document : WG-EMM-08/23 : Auteur(s): D. Siniff and D. Ainley (USA)

3. Comparison of catches for toothfish in 58.4.1, 58.4.2, and 48.6 from vessels with anomalous CPUE

   to the vessels with anomalous CPUE, we can develop alternative catch histories that can be used to ... use these data regarded as anomalous, along with that from other vessels fishing in the same area and ... season to illustrate a method for re-adjusting catches that may be area-misreported. We do this by using ... stocks, and uncertainty or bias in the amount of catch from an area must be taken into account in the ...

   Meeting Document : WG-FSA-13/57 Rev. 1 : Auteur(s): A. Dunn, B.R. Sharp (New Zealand), C. Darby (United Kingdom) and O.R. Godø (Norway)

4. On possible influence of continuous krill fishing technology with the use of ‘air-bubbling suspension system’ on ecosystem elements

   is compared with a conventional fishing method. It was shown that not only hydrobionts, which are in ... close contact with the trawl, will be exposed to ecosystem influence of CFS, but also marine animals ... distance through the influence on environmental conditions. Therefore we conceive it to be expedient that ... Abstract:  It was shown that potential increase in krill fishery in the immediate future ...

   Meeting Document : WG-EMM-06/27 : Auteur(s): S.M. Kasatkina and V.A. Sushin (Russia)

5. A proposal for large scale sampling of krill in the diet of predators across Area 48 to coincide with the CCAMLR synoptic survey

   variability requires a 'snapshot' of the krill population over the region (eg the CCAMLR B0 survey ... concordance with scientific net samples. In order to examine the potential of using krill in the diet of ... Islands and the South Shetland Islands, where predator foraging ranges overlap with intensive krill ... with the CCAMLR synoptic survey Approval:  Approved ...

   Meeting Document : WG-EMM-99/33 : Auteur(s): K. Reid (United Kingdom)

6. GROUNDFISH SURVEY IN CCAMLR SUB-AREA 48.3 IN APRIL 2008 WITH PRELIMINARY ASSESSMENT OF MACKEREL ICEFISH

   (2003), the biomass of mackerel icefish was estimated to be 80,426 tonnes, with a lower 1-sided 95% CI ... 2007/08 catch that remained after the survey (1709 tonnnes) will be taken. Scenario 1, which included ... cohort that has been detected by surveys since 2003, with no evidence of new recruitment since. Biomass ... Sil, with 70 bottom trawls undertaken giving good geographic coverage. Using 10 strata and the updated ...

   Meeting Document : WG-FSA-08/28 : Auteur(s): M.A. Collins, R.E. Mitchell, C.E. Main, J. Lawson, J. Watts, J. Slakowski, L. Featherstone and O. Rzewuski (UK)

7. Analysis of the sea-ice concentration (SIC) in Subarea 48.6, research blocks 2, 3, 4 and 5 with sea-surface temperature (SST) and statistical models

   subarea 48.6, with sea surface temperature(SST) and statistical models is presented.  For research block 4 ... University of Bremen(AMSR2). Repeated Accessibility(RA) in research blocks 4 and 5 with statistical models ... possible to predict the accessibility to research blocks 4 and 5 with the model in cooperation with HYCOM ... blocks 2, 3, 4 and 5 with sea-surface temperature (SST) and statistical models Microsoft Word File:  sam ...

   Meeting Document : WG-SAM-2019/15 : Auteur(s): T. Namba, R. Sarralde, H. Pehlke, K. Teschke, T. Brey, S. Hain, T. Ichii, T. Okuda, S. Somhlaba and J. Pompert

8. A REVIEW OF THE UNCERTAINTIES ASSOCIATED WITH PENGUIN POPULATION AND ABUNDANCE ESTIMATES FOR THE CCAMLR REGION

   cannot always be justified. Modelling approaches that may reduce these uncertainties are recommended and ... breeding colonies are available from a variety of sources and, when combined, coverage is thought to be ... reasonably comprehensive for some areas, but less complete for others. One key problem is that counts have ... availability of these units. Counts therefore have to be standardised prior to being summed, but the adjustment ...

   Meeting Document : CCAMLR-IWC-WS-08/08 : Auteur(s): Trivelpiece, W., Fraser, B., Trathan, P., Ainley, D., Southwell, C., Bost, C., Hindell, M., Lyver, P., Ratcliffe, N., Woehler, E.

9. Aligning toothfish fishery status with the CCAMLR regulatory framework

   with the regulatory framework. This can be accomplished through developing and adopting a suite of ... Convention Area is intended to be guided by CCAMLR’s regulatory framework. However, the status of toothfish ... communities. To mitigate this confusion, there is a need to realign the fishery status to be more consistent ... triggers that specify both clear definitions and mechanisms or triggers for assigning or reassigning ...

   Meeting Document : WG-FSA-2019/66 : Auteur(s): C.D. Jones

10. Approaches to monitoring and assessing toothfish in new and exploratory fisheries, with particular reference to Subarea 88.1

    would be imprudent to rely solely on any one of these methods at the present time. We recommend that tag ... recapture experiments, or trawl surveys, be used in conjunction with experimental manipulation of effort to ... . We further recommend that simulation studies be carried out to determine the best way to use the ... trawl surveys of juvenile grounds, and acoustic surveys. Because of potential biases we believe that it ...

    Meeting Document : WG-FSA-SAM-04/08 : Auteur(s): ODriscoll, R.L., Hanchet, S.M.

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