Résultats de la recherche

1. Longterm monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)

   Abstract:  Krill distribution and density are reviewed for the Elephant Island area with regard to ... approach introduced by de la Mare (1994a). The high interannual variability of krill recruitment is ... . Statistically significant fluctuations in krill density over the period 1977 to 1994 are also confirmed by this ... , V. Title:  Longterm monitoring of krill recruitment and abundance indices in the Elephant Island ...

   Meeting Document : WG-EMM-96/45 : Auteur(s): de la Mare, W., Loeb, V., Siegel, V.

2. Effect of orientation on broadband acoustic scattering of Antarctic krill Euphausia superba: implications for inverting zooplankton spectral acoustic signatures for angle of orientation

   and video footage from several Antarctic krill were carried out to determine the effect of animal ... orientation on echo spectral structure. A novel video analysis technique, applied to extract krill angle of ... orientation corresponding to each insonification, revealed that echo spectra from krill near broadside ... ) model. Information contained in the broadband echo spectra of the krill was exploited to. invert the ...

   Meeting Document : WG-EMM-99/41 : Auteur(s): L.V. Martin Traykovski (USA), R.L. O’Driscoll (New Zealand) and D.E. McGehee (USA)

3. Interannual variability of the South Georgia marine ecosystem: biological and physical sources of variation in the abundance of krill

   krill (Euphausia superba) in the South Georgia area, and that the variation affects much of the ... ecosystem with the most obvious impacts on survival and breeding success of some of the major krill ... structure by moving krill over large distances to areas where they are available to predator colonies. This ... krill and the transport pathways emphasizing that both the causes and the consequences of events at ...

   Meeting Document : WS-AREA 48-98/8 : Auteur(s): E.J. Murphy, J.L. Watkins, K. Reid, P.N. Trathan, I. Everson, J.P. Croxall, J. Priddle, M.A. Brandon, A.S. Brierley (UK) and E. Hofman (USA)

4. Proposal for a dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru

   Abstract:  A dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season is planned by ... Japan. No krill biomass has been estimated in the Division since 1996 when Australia carried out BROKE ... . There are two main objectives of our survey: (1) estimation of krill biomass to update B 0 in the ... research vessel, Kaiyo-maru, will be used in the survey. The krill survey (echosounder and RMT) and ...

   Meeting Document : WG-EMM-17/05 : Auteur(s): H. Murase, K. Abe, T. Ichii and A. Kawabata

5. Spatial distribution and swarm characteristics of Antarctic krill around the South Shetland Islands

   Abstract:  The spatial distribution and swarm characteristics of Antarctic krill were studied ... acoustic density were obtained with Kriging space interpolation, which showed that krill usually aggregated ... as swarms in a patchy fashion and the mean krill densities in December 2013 and February 2018 were ... than the other three years. The results also indicated that more krill swarms located at deeper water ...

   Meeting Document : WG-EMM-18/42 : Auteur(s): X. Yu, X. Wang and X. Zhao

6. Seasonal and interannual variability of krill, salp and other zooplankton populations in the northwest Antarctic Peninsula region: summer 2001 in relation to the Long-Term AMLR Data Set

   , 96 stations). Krill, salps and other zooplankton were collected at each station using a 180 cm Isaacs ... assess seasonal variations in distribution, abundance and demography of Antarctic krill (Euphausia ... field seasons to assess interannual variations. Mean and median krill abundance values in the Elephant ... female maturity stages, substantial larval krill concentrations and more developed larval stages during ...

   Meeting Document : WG-EMM-01/45 : Auteur(s): V. Loeb (USA)

7. A condensed history and document of the method used by CCAMLR to estimate krill biomass (B0) in 2010

   Abstract:  Antarctic krill (Euphausia superba) are considered to be one of the key species in the ... harvested. The commercial exploitation of krill is managed under the direction of CCAMLR (Commission for the ... model and krill yield model (Constable and de la Mare, 1996; Butterworth et al. 1994). A key parameter ... of the krill yield model is an estimate of the pre-exploitation biomass of krill (B 0). The current ...

   Meeting Document : WG-EMM-16/38 : Auteur(s): S. Fielding, A. Cossio, M. Cox, C. Reiss, G. Skaret, D. Demer, J. Watkins and X. Zhao

8. DIRECT EFFECTS OF CLIMATE CHANGE ON THE ANTARCTIC KRILL FISHERY

   seasonal behaviour of the region’s largest fishery, that for Antarctic krill. Declining sea ice cover in ... the main krill fishing grounds has resulted in greater accessibility of krill stocks to the fishing ... EFFECTS OF CLIMATE CHANGE ON THE ANTARCTIC KRILL FISHERY Approval:  Approved ...

   Meeting Document : WG-EMM-09/P06 : Auteur(s): S. Kawaguchi, S. Nicol and A.J. Press

9. KRILLBASE: a multinational, circumpolar database of abundance of Antarctic krill and salps

   Abstract:  Antarctic krill and salps are major macroplankton contributors to Southern Ocean food ... webs and biogeochemical cycles. Sustainably managing the fishery for Antarctic krill against a backdrop ... contains data on krill from ~12,520 hauls and data on salps from ~10,832 hauls. These span 49 seasons in ... KRILLBASE includes additional standardised krill density data representing the expected density from a ...

   Meeting Document : SC-CAMLR-XXXV/BG/24 Rev. 1 : Auteur(s): A. Atkinson, S. Hill, H. Peat, R. Downie and L. Gerrish

10. Preliminary report of sound-speed contrast and density of krill measured on board RV Kaiyo Maru

    Abstract:  The target strength (TS) of Antarctic krill, Euphausia superba, is a scaling factor to ... small animals like krill are difficult, the theoretical scattering models are used to predict the ... , morphology, orientation, and material properties of krill are required. There are two important material ... measurements of sound-speed and density of krill were carried out. We report on those preliminary results. The ...

    Meeting Document : WG-EMM-05/36 : Auteur(s): Y. Takao, H. Yasuma, R. Matsukura and M. Naganobu (Japan)

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