Resultados de la búsqueda
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Modelling Movement of Antarctic Krill (MMAK): the importance of retention, dispersal and behaviour for krill distribution – a project update
Antarctic Wildlife Research Fund, to improve current understanding of the regional and local-scale processes ... that influence the distribution of Antarctic krill in CCAMLR Area 48, focussing in particular on the ... investigate the impact of physical and behavioural processes on the distribution of krill in this area, at ... scales relevant to the krill fishery and predators. Preliminary analysis of a 20-year time series of ...
Meeting Document : WG-EMM-18/06 : Autor(es): S.E. Thorpe, E.F. Young, E.J. Murphy, O.R. Godø and A.H.H. Renner
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Stable isotope analysis of Southern Ocean fish tissue samples to investigate trophic linkages of Antarctic toothfish (Dissostichus mawsoni)
to determine C and N stable isotope composition. Values of?15N and?13C suggested that a minimum of ... Atlantic, and sperm whales from the Gulf of Mexico. There was high variance in?15N and?13C values for each ... of the species sampled, on the order of 3-4 ‰ for?15N (which equates to one trophic level) and 4 ... ‰ for?13C (suggesting multiple primary sources of organic matter). For each species where sufficient ...
Meeting Document : WG-EMM-07/19 : Autor(es): M.H. Pinkerton, S. Bury, S.M. Hanchet and D. Thompson (New Zealand)
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Winter distribution of chinstrap penguins from two breeding sites in the South Shetland Islands of Antarctica
Abstract: Satellite telemetry was used to determine the winter movements and distributions of ... eight chinstrap penguins known to breed at one of two colonies in the South Shetland Islands, Antarctic ... that 4 of the birds instrumented in the 2000 winter, two from each colony, foraged largely on the shelf ... to the north and northeast of the South Shetland Islands. Similarly, two birds tagged at Admiralty ...
Meeting Document : WG-EMM-06/17 : Autor(es): W.Z. Trivelpiece, S. Buckelew, C. Reiss and S.G. Trivelpiece (USA)
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Some notes on by-catch of fishes caught by the fishery vessel Niitaka Maru in the vicinity of the South Shetland Islands (December 2000 to January 2001)
by F/V Niitaka Maru (3910t) were made from 16 December 2000 to 26 January 2001 in the vicinity of the ... % of hauls sampled for by-catch and 51.2% of those contained fish. P. antarcticum and C. gunnari were ... which constitute 63.4% of hauls contained by-catch fish and a high degree of spatotemporal dissociation ... among juveniles of different species was recognized. The by-catch data of the present survey provided a ...
Meeting Document : WG-EMM-01/50 : Autor(es): T. Iwami, S. Kawaguchi and M. Naganobu (Japan)
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A hierarchical classification of benthic biodiversity and assessment of protected areas in the Southern Ocean
Abstract: An international effort is underway to establish a representative system of marine ... protected areas (MPAs) in the Southern Ocean to help provide for the long-term conservation of marine ... biodiversity in the region. Critical to this undertaking is understanding the distribution of benthic ... classification of ecoregions, bathomes and environmental types. Ecoregions are defined according to available ...
Meeting Document : WS-MPA-11/23 : Autor(es): L.L. Douglass, J. Turner, H.S. Grantham, S. Kaiser, R. Nicoll, A. Post, A. Brandt and D. Beaver (WWF–ASOC)
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Measurements of sound-speed and density contrasts of Antarctic krill (Euphausia superba) on board RV Kaiyo Maru
Abstract: In order to calculate the target strength of Antarctic krill (Euphausia superba) using ... of krill were measured during the Antarctic surveys conducted by the Japanese RV Kaiyo Maru in 1999 ... /2000 and 2004/2005. Samples of krill were caught by a RMT(1+8). Mass-density of krill was measured by ... Sea in January and February 2005. Sound-speed was measured using the "time of flight" method ...
Meeting Document : WG-EMM-08/56 Rev. 1 : Autor(es): Y. Takao, H. Yasuma, R. Matsukura, K. Amakasu and M. Naganobu (Japan)
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Some considerations for the further development of statistical summaries of CEMP indices
Abstract: A potential method is presented for combining data collected as part of the CCAMLR ... ecosystem monitoring programme (CEMP) into a single index for each of the predator, prey and environment ... parameters. The proposed method is based on the usual theory of multivariate statistics and takes into ... account the covariance between parameters. The power of the statistical procedure recently adopted by WG ...
Meeting Document : WG-EMM-Stats-97/07 : Autor(es): de la Mare, W.K.
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Diagnostic model of functioning of Antarctic krill population in the Cooperation Sea
Abstract: Being prepared by a collective of authors, this paper demonstrates some approaches to ... mathematical modelling of Antarctic krill population in the Cooperation Sea. The choice of investigation area ... from 1978 to 1984 and 1988. The objective of the researches was to reveal causes of sharp fluctuations ... assess variations in parameters of the ecosystem and its staunchness against their impact. A possibility ...
Meeting Document : WG-Joint-94/07 : Autor(es): V. Belyaev and M. Khudoshina (Ukraine)
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A revised assessment of the impact of the krill fishery on penguins in the South Shetlands
Abstract: This paper is a revision of the assessment of the competition between the Japanese ... slope and shelf to the north of either Livingston or Elephant Islands. In contrast, main foraging areas ... of penguins are considered to be formed in areas to the north of King George, Nelson and Robert ... foraging areas is resulted from that large colonies of the dominant penguin (chinstrap penguins, Pygoscelis ...
Meeting Document : WG-Joint-94/17 : Autor(es): T. Ichii, M. Naganobu and T. Ogishima (Japan)
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Preliminary results of RV Dmitriy Stefanov researches in the Antarctic area of the Atlantic Ocean in April 1992
polygon of 30 x 30 miles in the fishing area northwestward of Coronation Island in 18-22 April,1992. The ... krill biomass was estimated in the beginning and at the end of surveys. It amounted to 56.1 and 61.2 ... thous. t respectively. During the rest of the period the hydroacoustic assessment of krill aggregation ... of perimeter. The midwater trawl hauls were made periodically. The average estimates of krill ...
Meeting Document : WG-CEMP-92/33 : Autor(es): L.G. Maklygin, V.N. Shnar, A.V. Remeslo, A.P. Malyshko, I.A. Trunov, I.A. Barabanov, V.P. Shopov (Russian Federation) and A.G. Shepelev (Ukraine)