Search results
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Acoustic discrimination of southern ocean zooplankton
Abstract: Acoustic surveys in the vicinity of the sub-Antarctic island of South Georgia revealed ... the existence of a number of horizontally extensive yet vertically discrete scattering layers in the ... upper 250 m of the water column. These layers were fished with a LonghurstHardy plankton recorder (LHPR ... each scattering layer was composed predominantly of a single species of either the euphausiids ...
Meeting Document : WG-EMM-97/54 : Author(s): Watkins, J.L., Brierley, A.S., Goss, C., Ward, P.
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Diet variability and reproductive performance of macaroni penguins (Eudyptes chrysolophus) at Bird Island, South Georgia
breeding at Bird Island, South Georgia during the crèche period (January and February) between 1989 and ... 2010. Crustaceans were the main prey accounting for over 90 % of the diet by mass. Antarctic krill ... (Euphausia superba) was the main prey in 17 out of 22 years. Amphipods (Themisto gaudichaudii) were the main ... . frigida) in 2000. There was no clearly dominant prey group in 1999. The five-year average proportion of E ...
Meeting Document : WG-EMM-12/17 : Author(s): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan (United Kingdom)
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Growth and shrinkage in Antarctic krill Euphausia superba is sex-dependent
Abstract: The ability of Antarctic krill Euphausia superba Dana to withstand the overwintering ... during this time in response to the low availability of food. Nevertheless, verification that krill can ... shrink in the natural environment is lacking because winter data are difficult to obtain. One of the few ... adult krill (>35 mm total body length) obtained from commercial vessels in the Scotia-Weddell region ...
Meeting Document : WG-EMM-16/P04 : Author(s): G. Tarling, S. Hill, H. Peat, S. Fielding, C. Reiss and A. Atkinson
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Length-at-age juvenile Patagonian toothfish Dissostichus eleginoides
Abstract: The fishery for Patagonian toothfish is one of the most valuable in the CCAMLR Area ... . Age based models are used to assess the status of the stocks of this species. Although age can be ... estimated using otoliths it has proven difficult for these to be validated. During a recent trawl survey the ... length density of juvenile toothfish in the catches had a clearly defined polymodal distribution. The age ...
Meeting Document : WG-FSA-01/16 : Author(s): J. Ashford (USA), I. Everson (UK), C. Jones and S. Bobko (USA)
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Analysis of anomalous CPUE data from data-poor exploratory fisheries
Abstract: This paper presents an analysis prepared by the Secretariat and Korea to provide the ... context to the more variable and anomalously high CPUEs of the two Korean ships the Insung No. 2 and the ... Insung No. 7 while participating in CCAMLR exploratory fisheries. The operational characteristics of ... these ships showed distinct differences to the other ships that have participated in longline toothfish ...
Meeting Document : WG-FSA-12/07 : Author(s): Secretariat and Delegation of the Republic of Korea
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Krill fishery report: 2010 update
Abstract: So far this season (2009/10), ten of the 11 krill fishing vessels licensed by Members ... (China, Japan, Korea, Norway, Poland, Russia) have fished in Area 48. The total catch reported to May ... . Approximately 40% of the catch has been taken by two vessels using the continuous fishing system. The forecast ... total catch of krill for the season is 150000-180000 t. In 2008/09, five Members fished for krill in ...
Meeting Document : WG-EMM-10/05 : Author(s): Secretariat
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Abundance and richness of key Antarctic seafloor fauna correlates with modelled food availability
Abstract: Most seafloor communities at depths below the photosynthesis zone rely on food that ... sinks through the water column. However, the nature and strength of this pelagic–benthic coupling and ... its influence on the structure and diversity of seafloor communities is unclear, especially around ... Antarctica where ecological data are sparse. Here we show that the strength of pelagic–benthic coupling along ...
Meeting Document : WS-SM-18/P01 : Author(s): J. Jansen, N.A. Hill, P.K. Dunstan, J. McKinlay, M.D. Sumner, A.L. Post, M.P. Eléaume, L.K. Armand, J.P. Warncock, B.K. Galton-Fenzi and C.R. Johnson
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Phytoplankton standing stocks in relation to krill in Antarctic waters
Abstract: Investigations on krill trawl operations in the southern ocean were accompanied by the ... phytoplankton and zooplankton studies during the First Indian Antarctic Krill Expedition. The study area which ... , consisting of 32 diatoms and one dinoflagellete. Chaetoceros and Nitzschia spp. dominated the phytoplankton ... organisms. The other common diatoms present during the studies were Navicula, Rhizosolenia, Leptocylindrus ...
Meeting Document : WG-EMM-98/34 : Author(s): X.N. Verlecar, R. Vijayakumar, F. Saldhana and L. Martins (India)
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Trends in entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at South Georgia
. Consequently, the authority responsible for the management of Southern Ocean marine resources (CCAMLR) actively ... campaigned for compliance with the MARPOL provisions relating to waste disposal at sea, and for cutting of ... incidence has been halved in recent years. However, the South Georgia fur seal population has approximately ... doubled in the same period, so that the overall total of animals entangled may even have increased ...
Meeting Document : SC-CAMLR-XV/BG/03 : Author(s): Delegation of the United Kingdom
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Revised research plan for toothfish in Division 58.4.4 a & b by Shinsei maru No. 3 in 2013/14
comparative CPUE, modified Lincoln-Petersen and CASAL models following advices during the last WG-SAM meeting ... . Detailed results using CASAL models in SSRU C are described in a separated document. The catch and tagging ... data in SSRU D were not enough to be applied to modified Lincoln-Petersen and CASAL models. Thus the ... stock sizes of D. eleginoides in SSRU D is estimated only by using CPUE comparison with the stock size ...
Meeting Document : WG-FSA-13/36 : Author(s): Delegation of Japan