Resultados de la búsqueda
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Estimating food consumption of marine predators: Antarctic fur seals and macaroni penguins
Abstract: 1. Estimating food consumption is central to defining the ecological role of marine ... , growth, diet, life history and the activity budgets of marine predators to estimate population energy ... and macaroni penguin Eudyptes chrsolophus) that feed on krill in the Southern Ocean were used as ... examples to test the algorithm. A sensitivity analysis showed that estimates of prey consumed were most ...
Meeting Document : WG-EMM-02/23 : Autor(es): I.L. Boyd (United Kingdom)
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Predation on cephalopods by Pygoscelis papua and Arctocephalus gazella at South Orkney Islands
Abstract: The cephalopod diet of the Gentoo penguin, Pygoscelis papua and the Antarctic fur seal ... samples were collected by the water off-loading method from Gentoo penguins during the autumns of 1993 ... % of the samples. Lower beaks identified belonged exclusively to the squid Psychroteuthis glacialis ... . The mean lower rostral length (LRL) of these beaks was 1.1 mm (range 0.4- 1.8 mm). From the Antarctic ...
Meeting Document : WG-EMM-04/68 : Autor(es): M.M. Libertelli, G.A. Daneri (Argentina), U. Piatkowski (Germany), N.R. Coria and A.R. Carlini (Argentina)
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Soviet krill fishery in 1977–1992, Part 1. Distribution, fishing effort, interannual situation patterns
Abstract: The data on Soviet krill fishery in i977-1992 are presented. The fishing effort (FE ... ) developed in 1977-1991 was 50086 fishing days in total. According to the pictures presented FE was ... distributed between subareas 48.1, 48.2 and 48.3. Monthly FE distribution between subareas revealed the three ... : FE was developed mostly in subarea 48.2, since 1985 the role of 48.3 is increasing. Type III: 1987 ...
Meeting Document : WG-EMM-01/57 : Autor(es): F.F. Litvinov, V.A. Sushin, G.A. Chernega and O.A. Berezhinskiy (Russia)
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Krill population trends
of sources: from net surveys (the longest historical series of available date), from acoustic surveys ... , from fisheries data and from the distribution of krill predators. Each of these forms of data ... abundance comes from utilising the various forms of data to the maximum extent possible. Time series data ... are really only available from the South Atlantic where scientific netting programs and annual ...
Meeting Document : CCAMLR-IWC-WS-08/11 : Autor(es): Tarling, G., Watkins, J., Quetin, L., Reiss, C., Atkinson, A., Ross, R., Pakhomov, E., Kawaguchi, S., Nicol, S., Siegel, V.
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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 : Autor(es): Secretariat
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Diet composition of Antarctic toothfish caught in Divisions 58.4.1 and 58.4.2 in 2014/15 inferred from fatty acid stable isotope analyses
Abstract: To identify the important prey items for pre-recruit Antarctic toothfish in the SSRUs ... fishing vessel. In the previous studies, similarities in total FA compositions and the FA profiles in ... muscle tissue of Antarctic toothfish, bycatch specimen and icefish in the stomachs indicated a trophic ... connection between the toothfish and icefish. In this study, similarities in the δ13C values δ15N values of ...
Meeting Document : WG-EMM-16/31 : Autor(es): Delegation of the Republic of Korea
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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 ... issue. Many studies suggested the CPUE data should be standardized before using as abundance/biomass ... index. We tried to develop general additive models to standardize the CPUE data collected from Chinese ... fishing vessels during 2009/10-2013/14 seasons. We also compared the CPUE data and acoustic data collected ...
Meeting Document : WG-EMM-17/41 : Autor(es): Y. Ying, X. Wang, J. Zhu and X. Zhao
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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 : Autor(es): 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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CCAMLR scientific observation: tasks, priorities and time budget
Abstract: The workload of the tasks required in the CCAMLR Observer manual is assessed. The total ... time needed for the minimum amount of daily routine tasks was well above the capacity that an observer ... to undertake. The manual must be structured as its entirety so that the observer, only by following ... instructions in the manual, can produce the report and logbook data which is collected systematically and ...
Meeting Document : WG-EMM-07/26 : Autor(es): S. Kawaguchi (Australia)
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Near-shore acoustic surveys for Antarctic krill at South Georgia, January 2004
Abstract: Dual frequency (120 and 38 kHz) acoustic surveys were conducted around the Willis ... Islands and off the Barff Peninsula, South Georgia, from a 59 foot yacht in January 2004. The purpose of ... the surveys was to determine krill density near shore, in regions that have not traditionally been ... provisioning chicks ashore were foraging. Despite its relatively small size, the yacht (Golden Fleece) proved ...
Meeting Document : WG-EMM-04/35 : Autor(es): A.S. Brierley, P.N. Trathan, J. Poncet and A. Morton (United Kingdom)