Search results
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Target strengths of krill at 136 and 20 kHz
lengths in the range (45,50) mm the mean single-krill target strengths are in the range (-68,-69) dB at ... 136 kHz. For aggregations with mean lengths in the range (43,47)mm the mean single-krill target ... strengths are in the range (-71,-77) dB at 20 kHz. Trawling-acoustic method. For aggregations with mean ... lengths in the range (47,50) mm the mean target strengths in the range (-71,-75) dB at 20 kHz were ...
Meeting Document : WG-KRILL-91/29 : Author(s): S.M. Kasatkina (USSR)
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Growth of Antarctic krill Euphausia superba at South Georgia
Abstract: Antarctic krill Euphausia superba has a central role in the ecosystem of the Southern ... dynamics. The length of Antarctic krill in the diet of Antarctic fur seals Arctocephalus gazella at South ... Georgia revealed a consistent increase in size between c 42- c 54 mm over the period October-March ... , indicating growth rates much higher than predicted by existing models. Geographical variation in growth rate ...
Meeting Document : WG-EMM-01/18 : Author(s): K. Reid (United Kingdom)
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RAPID WARMING OF THE OCEAN AROUND SOUTH GEORGIA,SOUTHERN OCEAN, DURING THE 20TH CENTURY: FORCINGS, CHARACTERISTICS AND IMPLICATIONS FOR LOWER TROPHIC LEVELS
20th century but there are few locations with data before the 1950s. In addition, assessments of change ... in this region are hampered by the strong seasonal bias in sampling, with the vast majority of data ... century summer temperatures peaked ~6 days earlier. To quantify the long-term warming trend in this highly ... -year period, a mean increase of ~0.9°C in January and ~2.3°C in August was evident in the top 100 m of ...
Meeting Document : WG-EMM-08/P03 : Author(s): M.J. Whitehouse, M.P. Meredith, P. Rothery, A. Atkinson, P. Ward and R.E. Korb
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Spatial variability and power to detect regional-scale trends
Abstract: An important issue in regional-scale trend detection is the degree of concordance in ... trend between sites in relation to an average regional trend. If there is much or more variability ... of variation in a system, resulting in low power in trend detection across that scale, despite ... -scale surveys of Adelie penguin breeding population size in east Antarctica to assess the degree of ...
Meeting Document : WG-EMM-03/47 : Author(s): C. Southwell and L. Emmerson (Australia)
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Developing research on Antarctic krill to facilitate the development and updating of feedback management procedures
Abstract: Antarctic krill fisheries have the potential to be in the top 10 fisheries of the world ... in terms of biomass production. The expansion of the fishery from current levels appears inevitable ... given the demand for protein and the efficiencies now being developed in the fishery. CCAMLR is ... the impacts that fishing may have on the ecosystem. WG-EMM last reviewed these in workshops between ...
Meeting Document : WG-EMM-13/12 : Author(s): E.J. Murphy, R.D. Cavanagh (United Kingdom), A. Constable (Australia), E.H. Hofmann (USA), S.L. Hill, N.M. Johnston, P.N. Trathan and J.L. Watkins (United Kingdom)
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East Antarctica Planning Domain MPA Planning Reference Document #3: Draft MPA Report Part 3 – Research and Monitoring (update of SC-CAMLR-IM-I/BG/01)
Planning Domain presented in paper WG-EMM-14/48 following advice from WG-EMM in 2014. The rationale for the ... three parts is provided in SC-CAMLR-XXXIII/BG/38. This paper provides a more detailed account of ... research and monitoring in the East Antarctica Planning Domain and how this can form the basis of a ... the Scientific Committee in Bremerhaven, Germany in 2013. Research and monitoring in East Antarctica ...
Meeting Document : SC-CAMLR-XXXIII/BG/40 : Author(s): Delegations of Australia, France and the European Union
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Selecting sampling frequency for measuring diving behaviour
marine animals to the point where very detailed studies of variation in diving behaviour and performance ... fur seals and southern elephant seals representative of the extremes of diving in pinnipeds. For both ... seals: an increase in interval from 5s to 15s resulted in 20% of dives being unrecognised, a 38 ... % increase in mean maximum dive depth, a 29% increase in mean dive duration and a 12% increase in duration of ...
Meeting Document : WG-CEMP-93/14 : Author(s): I.L. Boyd (United Kingdom)
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Further development of the fishery plans
established by the Scientific Committee and Commission. In recent years, Plans have been drafted for the krill ... fishery in Area 48 (see WG-EMM-01/7, 02/6 and 03/28) and other fisheries (see WAMI-01/5, WGFSA-02/9 and 03 ... agreed by the Commission, as well as key operational information for each fishery. In 2004, the ... of information used in the Fishery Plans. This information includes: • management measures and ...
Meeting Document : WG-FSA-SAM-04/04 : Author(s): Secretariat
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Krill fishery report: 2006 update
Abstract: This report on the krill fishery in Area 48 has been prepared in a format similar to ... the “Fishery Reports” developed by WG-FSA in 2004. As reported to the CCAMLR Secretariat, 7 vessels ... from 5 Contracting Parties are fishing for krill in Area 48 in the 2005/06 season, and these vessels ... 127035 t of krill reported in the STATLANT data for 2004/05. All fine-scale data from Korea for 2004/05 ...
Meeting Document : WG-EMM-06/5 : Author(s): Secretariat
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COMPARATIVE CHARACTERISTICS OF PATAGONIAN (DISSOSTICHUS ELEGINOIDES) AND ANTARCTIC (D. MAWSONI NORMAN) TOOTHFISH INHABITING DIFFERENT SECTORS OF THE SOUTHERN OCEAN
spatial and vertical distribution of two toothfish species during their whole life cycle, changes in food ... of these parameters revealed essential differences in food spectra both at the first pelagic stage of ... larger on the average than in the area of Kerguelen Archipelago (58.5.1.) (Posters 1 and 2). In turn ... , Antarctic toothfish individuals in the seas of Indian Sector (58.4) are larger than in the Pacific Ross Sea ...
Meeting Document : WG-FSA-09/24 : Author(s): K.V. Shust, I.P. Zarikhin, I.G. Istomin, A.F. Petrov, V.A. Tatarnikov and N.S. Demina (Russia)