Résultats de la recherche
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KRILL DENSITY ESTIMATES IN CCAMLR SUBAREA 48.6 BASED ON ACOUSTIC DATA COLLECTED DURING JANUARY–MARCH 2008
Antarctic Krill and Ecosystem Studies (AKES) from January to March 2008. Acoustical data were sampled ... S in the sparsely studied CCAMLR subarea 48.6. The mean density of Antarctic krill, integrated to ... 270 m depth was 4.42 g/m2. The krill were mainly found in strong aggregations and were patchily ... distributed. The majority of the detected krill was distributed between 40 and 80 m depth, and approximately ...
Meeting Document : WG-EMM-09/45 : Auteur(s): G. Skaret, B.A. Krafft and R. Korneliussen (Norway)
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The integrated krill assessment model for Subarea 48.1 with future catches meeting alternative decision rules
Abstract: Model results and diagnostics for the integrated assessment model for krill in Subarea ... 48.1 are summarized. Alternative potential decision rules based on the distributions of krill spawning ... , and WG-FSA in a number of papers since 2011. The assessment model for krill in Subarea 48.1 is offered ... as a tool for CCAMLR to use in managing the krill fishery in Subarea 48.1. Author(s): D. Kinzey, G.M ...
Meeting Document : WG-SAM-16/36 Rev. 1 : Auteur(s): D. Kinzey, G.M. Watters and C.S. Reiss
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Modelling the predator–prey interactions of krill, baleen whales and seals in the Antarctic ecosystem
Abstract: The history of human harvests of seals, whales, fish and krill in the Antarctic is ... summarized briefly, and the central role played by krill emphasized. The background to the hypothesis of a ... krill surplus in the mid 20th Century is described, and the information on population and trend levels ... krill, four baleen whale (blue, fin, humpback and minke) and two seal (Antarctic fur and crabeater ...
Meeting Document : WG-EMM-05/34 : Auteur(s): M. Mori and D.S. Butterworth (South Africa)
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A multiple-frequency method for identifying and assessing the Antarctic krill stock in the Ross Sea (1989/90, 1997/98 and 1999/2000)
Italian expeditions to the Ross Sea to discriminate Euphausia superba (krill) aggregations from Euphausia ... applied to estimate krill biomass in the area of Ross Sea (22000 nm2), investigated from 19 to 26 December ... 1997. It results that krill biomass estimated by the criteria based on multiple frequency method is ... 8.87% lower than krill biomass estimated using conventional methods (net samplings and/or echogram ...
Meeting Document : WG-EMM-00/37 : Auteur(s): M. Azzali, J. Kalinowski and G. Lanciani (Italy)
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Swarm characteristics of Antarctic krill Euphausia superba relative to the proximity of land during summer in the Scotia Sea
swarming characteristics of Antarctic krill across the Scotia Sea in January and February 2003. Krill ... zone compared to <80 m 2 further offshore. The packing concentration of krill within inshore swarms ... . The highest median number of swarms per km and krill acoustic biomass per km was found in the 50 to ... marginally deeper in the night in offshore regions. Krill are likely to move between inshore and offshore ...
Meeting Document : WG-EMM-10/P09 : Auteur(s): T. Klevjer, G.A. Tarling and S. Fielding
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Potential climate change effects on the habitat of Antarctic krill
resource and a major prey item for many fish, birds and mammals in the Southern Ocean. The fishery and the ... Abstract: Antarctic krill is an obligate cold water species, an increasingly important fishery ... used a statistical model linking Antarctic krill growth to temperature and chlorophyll concentration to ... assess the influence of projected warming on Antarctic krill habitat quality. The results divide the ...
Meeting Document : WG-EMM-13/20 : Auteur(s): S.L. Hill, T. Phillips and A. Atkinson (United Kingdom)
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Simulating nursery areas for Antarctic krill along the western Antarctic Peninsula with relevance for the Domain 1 MPA Planning process
Abstract: Antarctic krill (Euphausia superba) is a key species and a dominant grazer in the ... early larval stages of Antarctic krill (the descent-ascent cycle) is largely controlled by temperature ... favorable nursery areas for Antarctic krill and assess how environmental conditions (stronger winds ... , temperature-dependent model of the descent-ascent cycle of Antarctic krill embryos and larvae that was forced ...
Meeting Document : SC-CAMLR-XXXVI/BG/12 : Auteur(s): Delegations of Argentina and Chile
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Krill CPUE standardisation and comparison with acoustic data based on data collected from Chinese fishing vessels in Subarea 48.1
Abstract: The usability of CPUE data as Antarctic krill abundance index was a widely discussed ... than catch per day data. The veridical distribution and movement of krill could be important source of ... to indicate the krill stock abundance should be very caution. However, the dynamics of CPUE could ... indicate the changing trends of the density of krill in the water close to sea surface, which may be ...
Meeting Document : WG-EMM-17/41 : Auteur(s): Y. Ying, X. Wang, J. Zhu and X. Zhao
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Revised outline of the 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 will be ... conducted by Japanese research vessel, Kaiyo-maru. No krill biomass has been estimated in the Division since ... Australia carried out BROKE in 1996. There are two main objectives of our survey: (1) estimation of krill ... changes if any. The krill survey (echosounder–EK80 and RMT) and subsequent biomass estimation will follow ...
Meeting Document : SG-ASAM-18/03 : Auteur(s): H. Murase, K. Abe, R. Matsukura, H. Sasaki and T. Ichii
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ANTARCTIC KRILL DEMOGRAPHY AND POPULATION DYNAMICS WEST OF THE ANTARCTIC PENINSULA IN 2010/11
Abstract: A krill net sampling survey was carried out west of the Antarctic Peninsula in January ... 2011 to collect data on krill distribution, abundance, demography, spawning and recruitment success ... were taken and analyzed for post-larval and larval krill, Euphausia superba, as well as for salps ... distribution of krill abundance, demography, and production on the western side of the Antarctic Peninsula ...
Meeting Document : WG-EMM-11/13 : Auteur(s): V. Siegel (Germany), C. Reiss (USA), K. Dietrich (USA), M. Haraldsson (Sweden) and G. Rohardt (Germany)