Résultats de la recherche

1. Preliminary assessment of toothfish in Subarea 48.3

   Abstract:  As with the 2009 assessment of Subarea 48.3, there is still uncertainty as to why there ... were high numbers of the 2001 cohort in commercial catches in 2009 onwards.  It is likely that it is ... due to a combination of a strong 2001 cohort and a change in selectivity for the commercial fleet, but ... it has not been possible to determine the relative importance of each explanation. Median log-normal ...

   Meeting Document : WG-FSA-11/33 Rev. 1 : Auteur(s): T. Peatman, R.E. Mitchell, G. Parkes and D.J. Agnew (United Kingdom)

2. Depletion-based stock reduction analysis: a catch-based method for determining sustainable yields for data-poor fish stocks

   for data-poor fisheries in cases where approximate catches are known from the beginning of ... exploitation. The method, called Depletion-Based Stock Reduction Analysis (DB-SRA), merges stochastic Stock ... specified based on general fishery knowledge of the relative location of maximum productivity and the ... relationship of MSY fishing rate to the natural mortality rate. This leaves unfished biomass as the only ...

   Meeting Document : WG-SAM-11/P2 : Auteur(s): E.J. Dick and A.D. McCall

3. Can we use discriminant function analysis to sex penguins prior to calculating an index of a morphometric parameter?

   males and females, and these often overlap. Whilst discriminant analysis can be used to determine the ... normal distributions are used to show that there is a difference between the real mean parameter for a ... sex, and the apparent mean derived by sexing the birds using discriminant analysis. When discriminant ... functions are able to correctly determine the sex of birds with greater than 80% success the difference ...

   Meeting Document : WG-CEMP-92/11 : Auteur(s): D.J. Agnew (Secretariat)

4. Survey estimates of recruitment of toothfish in Subarea 48.3

   data used by the Working Group for toothfish assessments in 1999 and later were correct. We found ... , the modal progression of peaks in the length densities corresponding to cohorts assessed by sequential ... surveys. Length based analysis of these confirms the growth rate expected from the CCAMLR growth equation ... for South Georgia. Although it is easy to spot cohorts, the size of individual cohorts can not be ...

   Meeting Document : WG-FSA-SAM-04/16 : Auteur(s): Collins, M., Wakeford, R.C., Moir-Clark, J., Belchier, M., Agnew, D.J.

5. Research plan for exploratory fishing for toothfish (Dissostichus spp.) in 2015/16 in Division 58.4.1

   with the other participants over the coming years in order to participate in the tagging program and ... achieve a robust stock assessment. The aim is to collect sufficient data to provide an advice on a catch ... /2016 developed under Conservation Measure 41-01. The biomass in the Division was estimated by research ... block during WG-FSA 2014 using CPUE x seabed analogy method. In the absence of an assessment using the ...

   Meeting Document : WG-SAM-15/16 : Auteur(s): Delegation of France

6. Long-distance movements of tagged Patagonian (Dissostichus eleginoides) and Antarctic toothfish (D. mawsoni)

   Abstract:  At WG-SAM-16, the Working Group discussed the implications of toothfish moving long ... distances after the Chilean research survey for Dissostichus spp. in Subarea 48.2 recaptured one tagged fish ... in 2016 that had been released in Subarea 48.6 in 2011 (WG-SAM-16/20). The Working Group noted that ... to date the majority of tagged toothfish movements were very restricted in distance and requested ...

   Meeting Document : WG-FSA-16/25 Rev. 1 : Auteur(s): CCAMLR Secretariat

7. Describing krill: swarms or integration intervals?

   , rather than the current integration grid approach, may facilitate the semi-automated processing of ... estimated mean areal krill density for a small (65 km by 60 km) survey conducted in the waters off Mawson ... research station in the East Antarctic (66 o 25' S 63 o 14' E).  I found 61 % overlap between the ... variance estimates for conventional grid-based swarm-based krill density.  The processing time of the swarm ...

   Meeting Document : SG-ASAM-17/02 : Auteur(s): M.J. Cox

8. Tagging Equipment Order Form

   purposes. On submission of this form the Secretariat will process the order within 48 hours and confirm via ... return email a DHL tracking number and an estimated order cost. A final invoice will be issued once the ... address * Phone number * A phone number is required for the freight company Company Tax ID Some ... destinations will not allow shipping without providing a Company/Business Tax ID to the freight company Vessel ...

   Webform

9. Simulating performance of trend analysis for setting catch limits in exploratory toothfish research plans

   Abstract:  Catch limits for toothfish in research blocks were set for the 2017/18 season using a ... rules developed by WG-FSA-17. The Scientific Committee recommended that the approach be further ... developed and tested as a matter of priority for WG-SAM-18. We formalised and codified the rules and ... developed a simulation approach to examine the performance of the trend analysis rules for scenarios with ...

   Meeting Document : WG-SAM-18/23 : Auteur(s): S. Hoyle, S. Parker, A. Dunn and S. Mormede

10. CCAMLR research and exploratory fishing: commercial fishing disguised as scientific research

    exploratory fishing conservation measures are not meeting the objectives of the Convention. Research and ... exploratory fishing activities are not increasing our understanding of the fished species and its impact on ... the ecosystem, putting the future of Antarctic marine living resources at risk. The Second Performance ... Review and several Scientific Committee working groups have raised concerns regarding the current ...

    Meeting Document : SC-CAMLR-XXXVII/BG/28 : Auteur(s): Submitted by ASOC

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