Résultats de la recherche

1. EXTRAPOLATING CONTINUOUS PLANKTON RECORDER DATA THROUGH THE SOUTHERN OCEAN USING BOOSTED REGRESSION TREES

   Plankton Recorder (SO-CPR) Survey. We demonstrate that it is possible to obtain a relationship between both ... data withheld from the fitting. We found that the data withholding of data from the model fitting must ... be done on a tow by tow basis as there is significant within-tow correlation. (2) Spatial cross ... subsequently to test the predictive accuracy of the model. These cross-validation methods showed that the ...

   Meeting Document : WG-SAM-08/12 : Auteur(s): M.H. Pinkerton, A.N.H. Smith (New Zealand), B. Raymond, G. Hosie (Australia) and B. Sharp (New Zealand)

2. Spatial and seasonal distribution of adult Oithona similis in the Southern Ocean: predictions using boosted regression trees

   waters. We demonstrate that it is possible to obtain reasonable models for both the presence (area under ... . Our analyses support the hypothesis that adult O. similis abundance is related to environmental ... , with surface abundances 20% higher at night than during the day. There was no evidence of diel ... area in the outer Bellingshausen Sea. We recommend that a database of all available net-haul data on ...

   Meeting Document : WG-EMM-10/P14 : Auteur(s): M.H. Pinkerton, A.N.H. Smith, B. Raymond, G.W. Hosie, B. Sharp, J.R. Leathwick and J.M. Bradford-Grieve

3. Results of a research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea, February 2012

   Abstract:  At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... recruitments from a well-designed survey could be a useful input into the Ross Sea stock assessment model and ... depth preference between 400 and 900 m. It is recommended that future surveys in this area should focus ... toothfish, the survey provided the opportunity to compare catch rates in 2012 with historical catch rates by ...

   Meeting Document : WG-SAM-12/29 : Auteur(s): S.M. Hanchet, S. Mormede, A. Dunn (New Zealand) and H.-S. Jo (Republic of Korea)

4. SUMMARY OF SCIENTIFIC OBSERVATIONS RELATED TO CONSERVATION MEASURES 24-02 (2008), 25-02 (2009), 25-03 (2009) AND 26-01 (2009)

   placeholder for this item in order that the Scientific Committee can be made aware of any anomalous data in ... 2009/10 season relating to compliance with Conservation Measures 24-02 (2008) “Longline weighting for ... . 2 and Jung Woo No. 3 (Table 1). Observers reported that all bait box packaging bands were cut and ...

   Meeting Document : WG-FSA-10/08 : Auteur(s): Secretariat

5. Proposal for an extension to the mark recapture experiment to estimate toothfish population size in Subarea 48.4

   , to bring the mitigation requirements for 48.4 into line with the IMAF risk assessment, such that ... for D. eleginoides and D. mawsoni in the southern area. 6. It is proposed that catch limits are ... daytime setting would be permitted if bottle tests are undertaken, and the fishing season is extended to ...

   Meeting Document : WG-FSA-08/46 : Auteur(s): J. Roberts and D. J. Agnew (UK)

6. Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass

   krill yields according to decision rules that relate spawning stock status to the median unexploited ... ). The krill yield model uses a biased estimate of SB0 with a method for correcting this bias in the ... results show that the biased estimate of SB0 results in a biased estimate of the probability of critical ... critical depletion will be too high. The relationship between fishing season and spawning season will ...

   Meeting Document : WG-EMM-97/45 : Auteur(s): de la Mare, W.K., Constable, A.J.

7. Report to CCAMLR-XXIX on the implementation of the Agreement on the Conservation of Albatrosses and Petrels

   revealed that the most effective measures to reduce incidental take of seabirds in pelagic longline ... combination with appropriate line weighting. The SBWG also reviewed progress in bycatch mitigation research ... for pelagic and demersal trawl gear and advised that the most effective measure to reduce incidental ... CCAMLR waters. This information will be incorporated in future reports to CCAMLR. Author(s):  ACAP ...

   Meeting Document : CCAMLR-XXIX/BG/18 : Auteur(s): ACAP Secretariat

8. Consumption estimates for male Antarctic fur seals at the South Orkney Islands during the post mating migration

   in order to provide more robust estimates of the fur seal impact on this region that can be used to ... this connectivity. Our estimates suggest that the influx of fur seal males from South Georgia has a ... significant impact on the marine environment around the South Orkney Islands with a potential total krill ...

   Meeting Document : WG-EMM-18/10 : Auteur(s): I. Staniland and S. Hill

9. Progress report for the third year of the research fishery for Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa: 2013–2015.

   . mawsoni, respectively were recaptured. It is encouraging that 10 tagged D. mawsoni have been recaptured in ... . Author(s):  R.W. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa) Title ...

   Meeting Document : WG-SAM-15/50 : Auteur(s): R.W. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)

10. Revised research plan for the exploratory fisheries for Dissostichus spp. in Subarea 48.6 in 2014/15

    reference area sizes. The stock size estimate using the Petersen estimator was similar to that using the ... ) were relatively consistent with the observed numbers for D. mawsoni in the block 486_2 for 2012/13 and ... limit, we propose to continue the current research operation for at least 3 years with the same sample ... procedure recommended at the last WG-FSA meeting. The results of calculations were generally consistent with ...

    Meeting Document : WG-FSA-14/17 : Auteur(s): Delegation of Japan

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