Résultats de la recherche

1. Interaction between oceanography, krill and baleen whales in the Ross Sea and adjacent waters, Antarctica in 2004/05

   conditions, and the distribution of krill as prey and baleen whales as predators in the Ross Sea and its ... thermal conditions, krill and baleen whale distributions. The oceanography of the surface layer was ... distribution patterns of each species. Antarctic krill (Euphausia superb) mainly distributed in the Antarctic ... -200 =-1°C). Ice krill (Euphausia crystallorophias) clearly distributed in SW but not ASW. Humpback ...

   Meeting Document : WG-EMM-07/07 : Auteur(s): M. Naganobu, S. Nishiwaki, H. Yasuma, R. Matsukura, Y. Takao, K. Taki, T. Hayashi, Y. Watanabe, T. Yabuki, Y. Yoda, Y. Noiri, M. Kuga, K. Yoshikawa, N. Kokubun, H. Murase, K. Matsuoka and K. Ito (Japan)

2. Krill fishery information

   Abstract:  Compilation of information and work pertaining to the krill fisheries in CCAMLR waters ... on catches for the current season (2003/04); • Measures of overlap between the krill fishery and ... krill predators; • A revised plan for the krill fishery in Area 48. Author(s):  Secretariat Title ... :  Krill fishery information Approval:  Approved ...

   Meeting Document : WG-EMM-04/15 : Auteur(s): Secretariat

3. Near-shore acoustic surveys for Antarctic krill at South Georgia, January 2004

   the surveys was to determine krill density near shore, in regions that have not traditionally been ... speeds of up to 7 knots. Echo intensity data were scaled to krill density using a target strength ... determined from the length distribution of krill sampled from fur seal scats at Bird Island (mean krill ... length 53.13 mm, TS =-38.43 dB kg-1). Mean krill densities were 7.1 g m-2 off the Barff Peninsula and 5.7 ...

   Meeting Document : WG-EMM-04/35 : Auteur(s): A.S. Brierley, P.N. Trathan, J. Poncet and A. Morton (United Kingdom)

4. Are penguins and seals in competition for Antarctic krill at South Georgia?

   , respectively, the main mammal and bird consumers of Antarctic krill (Euphausia superba). In recent years the ... krill of similar size ranges, dive to similar depths and are restricted in their foraging range at least ... concentrations of foraging activity were significantly segregated spatially. The size of krill taken by both ... species was very similar, but over the last 12 years the prevalence of krill in their diets has diverged ...

   Meeting Document : WG-EMM-02/22 : Auteur(s): K.E. Barlow, I.L. Boyd, J.P. Croxall, K. Reid, U.J. Staniland and A.S. Brierley (United Kingdom)

5. Broadbandwidth total target strength measurements of Antarctic krill (Euphausia superba) from reverberation in a cavity

   Abstract:  Total scattering cross-sections (st) of Antarctic krill, Euphausia superba, were ... strengths (??10log(??4?) t TTS), were measured from groups of 57 to 1169 krill (average standard length ... omnidirectional emitter into one of three glass carboys containing groups of krill swimming in 9.3, 19.3 or 45.9 l ... of seawater (0.6??temperature??3.6 °C). Between each pulse, the krill moved within the fixed-boundary ...

   Meeting Document : WG-EMM-02/49 : Auteur(s): D.A. Demer and S. G. Conti (USA)

6. An acoustic estimation of krill densities to the north of South Georgia in January 1994

   krill from other acoustic targets. A generic target strength to weight relationship was used to derive ... krill densities from 120 kHz signals attributed krill. At less than 1 g m-2, mean weighted krill ... provide further evidence of an extreme krill paucity around South Georgia in the 1993/4 season. Author(s ... ):  Watkins, J.L., Brierley, A.S. Title:  An acoustic estimation of krill densities to the north of South ...

   Meeting Document : WG-EMM-95/74 : Auteur(s): Watkins, J.L., Brierley, A.S.

7. A simulation study of krill fishing by an individual Japanese trawler (SC-CAMLR-VI/BG/37)

   Japanese krill trawler over a half-month period. It is based on an underlying krill distribution model ... : artificially elongating krill swarms, and allowing hauls to continue through more than one swarm. Twenty four ... candidate abundance indices (generally of a CPUE form) for krill biomass in the 600 n.mile square oceanic ... overall krill biomass might decline is investigated. Generally the indices respond by dropping relatively ...

   Meeting Document : WS-KCPUE-89/04 : Auteur(s): D.S. Butterworth (South Africa)

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

   Japanese krill trawler over a half-month period. It is based on an underlying krill distribution model ... : artificially elongating krill swarms, and allowing hauls to continue through more than one swarm. Twenty four ... candidate abundance indices (generally of a CPUE form) for krill biomass in the 600 n.mile square oceanic ... overall krill biomass might decline is investigated. Generally the indices respond by dropping relatively ...

   Meeting Document : SC-CAMLR-VII/BG/37 : Auteur(s): D.S. Butterworth (Invited Expert)

9. Updating the Antarctic krill biomass estimates for CCAMLR Subareas 48.1 to 48.4 using available data

   Abstract:  We present a novel index of Antarctic krill biomass in CCAMLR subareas 48.1 to 48.4 ... variation was significant (CV=73%) but no systematic change in krill biomass was evident during the period ... yield estimate for the krill fishery (which is 9.3%). Biomass indices from local scale acoustic surveys ... the krill stock. This evidence suggests that the trigger level is a highly precautionary operational ...

   Meeting Document : WG-EMM-15/28 : Auteur(s): S. Hill, A. Atkinson, C. Darby, S. Fielding (United Kingsom), B. Krafft, O.R. Godø, G. Skaret (Norway), P. Trathan, J. Watkins (United Kingdom)

10. Evaluation of Antarctic krill biomass and distribution off the South Orkney Islands 2011-2015

    Abstract:  Annual acoustic trawl surveys for krill monitoring have been carried out by the ... early in the fishing season (January/February), using two different krill fishing vessels as platforms ... and abundance of krill near the South Orkneys among years, we here attempt to generate a coherent ... series of krill density estimates from the 5 years of surveys. We follow the CCAMLR protocol for biomass ...

    Meeting Document : WG-EMM-15/54 : Auteur(s): G. Skaret, B.A. Krafft, L. Calise (Norway), J. Watkins (UK), R. Pedersen and O.R. Godø (Norway)

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