Résultats de la recherche

1. Statistical problems in krill stock hydroacoustic assessments

   Abstract:  Two primary issues are at question for hydroacoustic assessments of krill, The first is ... for deciding what method is most appropriate, this is made even more difficult by the fact that most ... several unsatisfied needs for improvements in sampling design and tests for systematic trends in survey ... of interest would seem to be not the absolute amount of biomass present in an area, but rather how it ...

   Meeting Document : SC-CAMLR-VII/BG/22 : Auteur(s): United States of America

2. e-sc-xxxiii-a4.pdf

   ... these parameters are vessel independent, the power setting for an individual frequency is dependent on ... noted that an efficient tool for display and easy extraction of relevant parts of a dataset would be ... Development of protocols for data collection ............................................ 121 Monitoring of ... .................................... 140 Appendix E: An example of determining echosounder system performance by seabed comparison application/pdf attached to:SG-ASAM-14

   Meeting Report : SG-ASAM-14

3. Does the current South Georgia groundfish survey accurately estimate the standing stock of mackerel icefish?

   short acoustic survey on FPRV Dorada showed that mackerel icefish, of all age classes, spend time in ... midwater and reinforced the evidence that a bottom trawl survey significantly underestimates biomass. An ...

   Meeting Document : WG-FSA-SAM-04/20 : Auteur(s): Agnew, D., Goss, C., Xavier, J., Belchier, M., Collins, M., Reid, K.

4. Swarm characteristics of Antarctic krill Euphausia superba relative to the proximity of land during summer in the Scotia Sea

   zone compared to <80 m 2 further offshore. The packing concentration of krill within inshore swarms ... was also significantly greater, with an average density of 95 ind. M–3 compared to between 24 and 31 ...

   Meeting Document : WG-EMM-10/P09 : Auteur(s): T. Klevjer, G.A. Tarling and S. Fielding

5. Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1998–1999

   birds per 1000 hooks, compared with 0.289 in 1996-97 and 0.117 in 1997-98. Comparisons between years for ... Abstract:  Longline fishing for Patagonian toothfish Dissostichus eleginoides in the South African ... bycatch during the year July 1998-June 1999. Data on seabird bycatch were obtained from fishery observers ... the same vessel, using the same gear design and at the same time of year, show marked decreases in ...

   Meeting Document : WG-FSA-99/42 Rev. 1 : Auteur(s): P.G. Ryan and B.P. Watkins (South Africa)

6. Population dynamics of the wandering albatross Diomedea exulans at Marion Island: long-line fishing and environmental influences

   that attempts to breed in a given year. Changes in several demographic parameters that appear to be ... , suggesting common factors operating at an ocean-basin scale. The average survival rate of adult females was ... , suggesting a male-biased population. Survival rates of juvenile males and females did not differ. The age ... supplementary food being made available by the initiation of a longline fishery for Patagonian toothfish ...

   Meeting Document : WG-EMM-03/11 : Auteur(s): D.C. Nel, F. Taylor, P.G. Ryan and J. Cooper (South Africa)

7. Preliminary tag-recapture based population assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 48.4

   series and harvest rate of γ = 0.038, implies a 2019/20 yield of 45 tonnes using the 5-year average ... from tagging returns to average 1109 tonnes since 2010, with a five-year (2015-2019) average biomass of ... . The current method of assessment, based on tag returns, consequently, is considered to provide an ... Consent:  No Delegation responsibility for releasing documents:  United Kingdom ...

   Meeting Document : WG-FSA-2019/27 : Auteur(s): T. Earl and A. Riley

8. L'effet de la taille de l'échantillon sur la distribution des longueurs observée du krill antarctique

   Abstract:  The appropriate sample size for krill length measurement was raised during the WG-SISO ... :  Approved Secretariat Workflow Status:  Content Approved Delegation responsibility for releasing documents ...

   Meeting Document : SC-CAMLR-XXXVI/21 : Auteur(s): Delegation of China

9. By-catch of fish in longline catches off the Kerguelen Islands (Division 58.5.1) during the 1995/96 season

   cruise and an experimental deep-sea longline fishing cruise targeting Patagonian toothfish (Dissostichus ... at the limit of their bathymetric range. An abundance index was used to show bathymetric and ... 80 85 90 Total length (cm) Figure 7: Size distribution of Macrourus carinatus caught during ... taken during a commercial fishing cruise and an experimental deep-sea longline fishing cruise targeting ... others were mainly shelf-dwelling species found at the limit of their bathymetric range. An abundance ... fishing for D. eleginoides has expanded to other parts of the Southern Ocean (South Georgia and recently ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 175–193 : Auteur(s): Duhamel, G., P. Pruvost and D. Capdeville

10. On the consequences of differentiating between adult and sub-adult survival rates in the krill-predators model

    is unable to achieve compatibility with survival rate data for the Antarctic fur seal coupled to an ... split of the overall density dependence effect between the first year and following sub-adult years of ... Abstract:  The krill-predators model is generalised by splitting post-first-year animals into ... adults and sub-adults, with different survival rates for these two groups. Broadly speaking, the sub ...

    Meeting Document : WG-EMM-95/39 : Auteur(s): Butterworth, D.S., Thomson, R.B.

Pages