Résultats de la recherche

1. Development of an acoustic sensor to estimate catch directly from the trawl during continuous krill harvesting

   Secretariat Workflow Status:  Content Approved Document Release Consent:  No Delegation responsibility for ... support  precise catch reporting for the continuous krill harvesting fishery.  Author(s):  O.R. Godø, B ... trawl during continuous krill harvesting Microsoft Word File:  emm-2019-15.docx Approval:  Approved ...

   Meeting Document : WG-EMM-2019/15 : Auteur(s): O.R. Godø, B. Krafft and F. Grebstad

2. On spatial-temporal variability of krill length composition in Subarea 48.1. Comments and proposals

   Secretariat Workflow Status:  Content Approved Document Release Consent:  No Delegation responsibility for ... Abstract:  The issues are discussed on estimating spatial-temporal distribution of krill length ... . Author(s):  S. Kasatkina and A. Sytov Title:  On spatial-temporal variability of krill length composition ...

   Meeting Document : WG-EMM-2019/56 : Auteur(s): S. Kasatkina and A. Sytov

3. Are krill recruitment indices from meso-scale survey representative for larger areas?

   programme which continuously collected krill demography data since 1993 during the austral summer season in ... Abstract:  The present contribution uses data from German surveys in the 1980’ies and the US LTER ... ) and two-year old (R2) krill differ substantially between years. However, results were in conformity ... for age-one-old krill between scientific surveys from the northern Bellingshausen Sea, the Elephant ...

   Meeting Document : WG-EMM-02/20 : Auteur(s): V. Siegel (Germany), R.M. Ross and L.B. Quetin (USA)

4. Modelling Southern Ocean krill population dynamics: biological processes generating fluctuations in the South Georgia ecosystem

   diet data from South Georgia were used to examine seasonal changes in the population structure of krill ... model solutions with the predator diet data indicates that the model can reproduce the observed pattern ... important aspect of the variation is fluctuation in the abundance of krill, the major prey item of many of ... . So far, however, there has been little quantitative assessment of the importance of krill population ...

   Meeting Document : WG-EMM-01/53 : Auteur(s): E. Murphy and K. Reid (United Kingdom)

5. QUANTIFYING MOVEMENT BEHAVIOUR OF VESSELS IN THE ANTARCTIC KRILL FISHERY

   Abstract:  Ten years of recent finescale haul-by-haul krill data were used to characterize the ... demonstrate the need for high quality year-round data on all vessels participating in the krill fishery to ... behaviour of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed ... for describing a generalised fishery model. Updates for some of the parameters for the krill fishery ...

   Meeting Document : WG-EMM-09/P05 : Auteur(s): S. Kawaguchi and S.G. Candy

6. Start date of the CCAMLR fishing season for Antarctic krill

   for management. We review data on the breeding phenology of predators, and use data from the CCAMLR ... Abstract:  In this paper we consider whether the CCAMLR fishing season for Antarctic krill should ... for competition between land-based krill-eating predators and the fishery. Author(s):  P. Trathan and ... S. Hill Title:  Start date of the CCAMLR fishing season for Antarctic krill Microsoft Word File ...

   Meeting Document : WG-EMM-16/16 : Auteur(s): P. Trathan and S. Hill

7. An 8-year cycle in krill biomass density inferred from acoustic surveys conducted in the vicinity of the South Shetland Islands during the austral summers of 1991/1992 through 2001/2002

   -seasonal variations in krill biomass density and dispersion were derived from the re-processed data set for ... Abstract:  Data from single and multi-frequency active acoustic surveys conducted annually in the ... delineating volume backscattering due to Antarctic krill, adjusting for signal contamination due to noise, and ... compensating for diel vertical migration of krill outside of the acoustic observation window. Intra-and inter ...

   Meeting Document : WG-EMM-03/6 : Auteur(s): R.P. Hewitt, D.A. Demer and J.H. Emery (USA)

8. A simulation study of krill fishing by an individual Japanese trawler

   of existing scientific krill survey data to improve the krill distribution model underlying this ... data from the commercial fishery. Twenty-four candidate "CPUE" biomass indices are considered ... Japanese krill trawler over a half-month period, and the output is compared to statistics from a sample of ... , and their performance investigated in response to six different ways in which the overall krill ...

   Meeting Document : SC-CAMLR-VI/BG/38 : Auteur(s): D.S. Butterworth (United Kingdom)

9. Preliminary results on the distribution and abundance of Antarctic krill (Euphausia superba) in the Weddell Sea, Southern Ocean

   Abstract:  Hydroacoustic data were collected to study the distribution and abundance of Antarctic ... 200 kHz transducers mounted on the drop keel of the research vessel were used to collect acoustic data ... ; where the first year (2014) of the study logged acoustic data during daytime only whilst surveys in ... later years (2015-2016) logged data all day long. Target sampling was conducted using the Methot ...

   Meeting Document : SG-ASAM-18/09 : Auteur(s): F.W. Shabangu

10. Variability of krill biomass estimates in repeated mesoscale surveys in relation to CCAMLR-2000 Survey

    krill biomasses derived from trawl catches was carried out; retrospective data of three Soviet surveys ... layers sampled during CCAMLR-2000 and Soviet surveys, krill biomass derived from data collected in 80-s ... the krill biomass status, is it high, medium or low at the present time. The comparative analysis of ... CCAMLR-2000. Krill biomass index calculated for the whole area of Soviet surveys doesn't reveal any ...

    Meeting Document : WG-EMM-01/28 : Auteur(s): V.A. Sushin, F.F. Litvinov (Russia) and V. Siegel (Germany)

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