Résultats de la recherche
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Areal and seasonal extent of sea-ice cover off the northwestern side of the Antarctic Peninsula: 1979 to 1996
Antarctic Peninsula: 1979 to 1996 Abstract / Description: Analysis of seasonal sea-ice cover of an area ... with features described by Stammerjohn and Smith (1996) for ice cover in the Bellingshausen Sea ... of sea-ice cover were integrated over time to produce an annual index of sea-ice cover in units of 10 ... four periods of extensive ice cover during the last 18 years. Variability in seasonal timing, areal ... use of the same data sources to derive an index of ice cover for a larger area, encompassing the ... were subsampled for an area of 40 X 50 pixels (1.25 X 10Qm2) centred on the northwestern side of the ... curves of sea-ice cover were drawn from monthly estimates for each year (Figure 2). The area under the ... Ocean: an analysis for the west Antarctic Peninsula region. AMS Sixth Conference on Climate Variations ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 65–73 : Auteur(s): Hewitt, R
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Models of Antarctic marine ecosystems in support of CCAMLR and IWC: background
CCAMLR-IWC Workshop to review input data for Antarctic marine ecosystem models. It summarises background ... organisations. It also provides an outline of the nature of modelling for these purposes and the general issues ... is currently in draft form open to comment and is being developed to provide an introduction to the ... that need to be considered in parameterising a model, providing input data for those models and for ...
Meeting Document : CCAMLR-IWC-WS-08/03 : Auteur(s): Constable, A.
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Distribution and some biological features of icefish (Champsocephalus gunnari) at different life cycle stages in the South Georgia subarea
Abstract: The results of icefish ecology were summarized for the period of above 20 years of ... after 20 cm length reaching and the bottom one at length above 40 cm. Ch.gunnari undertakes vertical ... for the most time and is fished with midwater trawl. Its diurnal migrations pattern is similar to that ...
Meeting Document : WG-FSA-99/65 : Auteur(s): Zh.A. Frolkina (Russia)
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Pursuit of polynyas in the Antarctic peninsula area
1987 was pursed from beginning on August 1 to end on October 20. The shape of the polynya changed ... observations. A typical polynya existed off the tip of the Peninsula in 1987 and 1991. In the such years, sea ... ice cover developed extensively. Inversely, the years of the narrow sea ice cover were 1988, 1989,1990 ... and 1993. In the such years, polynyas did not existed. The typical polynya (nearly 500 x 200 km) in ...
Meeting Document : WG-EMM-97/69 : Auteur(s): Kimura, N., Shibazaki, K., Matsumura, S., Naganobu, M., Okada, Y.
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Poor breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season
following first hatch, when the chicks were very small. A total of 802 chicks reached crèche age from 1880 ... adult birds spending longer at sea foraging than in normal years. In most previous seasons birds have ... "good" years. Meal masses brought back to the chicks appeared normal, but feeding frequencies ...
Meeting Document : WG-EMM-99/25 : Auteur(s): L. Irvine, J.R. Clarke and K.R. Kerry (Australia)
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Sources of variance in studies of krill population genetics
these species would affect the design of management strategies for their conservation. A recent ... taken within one region. This has important implications for the design of future studies of krill ... 94ºC for 2 min to denature template DNA, followed by thermal cycling at 94ºC 20 s, 43ºC 1 min and ... 98 6 4 al lo zy m e lo ci 20 2, 1 90 , 1 97 , 1 96 , 1 89 , 1 98 N o d if fe ... for 20 min and the gel transfer- red onto a UV transilluminator. The gel was photographed through a ... number of trawl hauls necessary to get an unbiased estimate of these population parameters for krill ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 107–116 : Auteur(s): Jarman, S.N. and S. Nicol
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Updated stock assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Kerguelen Islands (division 58.5.1)
Abstract: An updated assessment of the Patagonian toothfish (Dissostichus eleginoides) stocks in ... , commercial catch-at-length, data from the “PoKer” surveys, and the last age readings. Author(s): R. Sinegre ... : Content Approved Delegation responsibility for releasing documents: France ...
Meeting Document : WG-FSA-16/54 : Auteur(s): R. Sinegre and G. Duhamel
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Results and standing stock biomass estimates of finfish from the 2001 US AMLR bottom trawl survey of the South Shetland Islands (Subarea 48.1)
. rossii have not recovered even after commercial fishing has ceased for 20 years. The overall abundance of ... biomass were computed for eight species: Champsocephalus gunnari, Chaenocephalus aceratus, Chionodraco ... Survey. For most species, the standing stock has decreased slightly, although in most cases the 95 ...
Meeting Document : WG-FSA-01/33 Rev. 1 : Auteur(s): C.D. Jones, K.-H. Kock, D. Ramm, J. Ashford, S. Wilhelms, T. Near, N. Gong and H. Flores
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Comparisons in diet between diurnal and overnight foraging chinstrap penguins at Seal Island
) breeding at Seal Island during chick-brooding period of 1988/89, 1989/90, 1993/94 and 1994/59 were analyzed ... values of the estimated diet mass were 4085 kJ for diurnal foragers and 4809 kJ for overnight foragers ... , which were comparable with daily average energy requirements calculated for a diurnal forager (4853 kJ ... ) and an overnight forager (5732 kJ) based on available input parameters. A comparison of krill in the ...
Meeting Document : WG-EMM-96/55 : Auteur(s): Hayashi, T., Ichii, T., Cameron, M.F., Miura, A., Jansen, J.K., Bengtson, J.L., Boveng, P.
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Modelling egg and larval transport of Antarctic toothfish (Dissostichus mawsoni) in the East Antarctic region: preliminary result using satellite data
eddy activity) covering 2011-2018, we developed the particle tracking model to investigate egg and ... 2-year simulation. From the result of the BB region, while strong self retention on the BB was ... responsibility for releasing documents: Japan ... advected to the nursery areas in about 3 months-2 years by different local oceanic dynamics. Author(s): M ...
Meeting Document : WG-FSA-2019/63 : Auteur(s): M. Mori, K. Mizobata, T. Okuda and T. Ichii