Search results
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Acoustic data analysis and models of krill spatial distribution
wavenumber spectrum resembles a white noise at scales of 2-20 km, although at scales smaller than 1 km the ... analysis suggest that krill patch size or rather a basic swarm size should be smaller than 200 m, finest ... OF KRILL SPATIAL DISTRIBUTION A. Morin, A. Okubo and K. Kawasaki Abstract Acoustic data ... spectrum resembles a white noise at scales of 2-20 km, although at scales smaller than 1 .km the spectrum ... analysis suggest that krill patch size or rather a basic swarm size should be smaller than 200 m, finest ... Les donnees acoustiques recueillies les 4 et 5 janvier 1987 a bord du navire de recherche Professor ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 311–329 : Author(s): Morin, A., A. Okubo and K. Kawasaki
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Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season
(Pygoscelis adeliae) at Béchervaise Island during 1998/99, a season of low breeding success. Fifty-six ... percent of nests with eggs failed during the three weeks following first hatch. A breeding success of 0.43 ... reduced feeding frequency. These findings contrast with observations made in 1994/95 (a season in which ... Bechervaise Island during 1998/99, a season of low breeding success. Fifty-six percent of nests with eggs ... failed during the three weeks following first hatch. A breeding success of 0.43 chicks cr6ched per nest ... frequency. These findings contrast with observations made in 1994/95 (a season in which all chicks died of ... jeunes s'inscrit dans les limites de la norme, mais la longue duree des sorties alimentaires a reduit la ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 151–167 : Author(s): Irvine, L.G., J.R. Clarke and K.R. Kerry
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Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector
shelf communities ideally incorporates a range of data on physical, environmental and biological ... Peninsula and the South Shetland Islands, the data indicate a two-layered pattern based on standardised ... physical oceanographic data reveals a pattern of shelf faunal zonation: the benthic invertebrate ... incorporates a range of data on physical, environmental and biological properties. Analysis of the benthic ... Islands, the data indicate a two-layered pattern based on standardised total biomass data and the ... composition of phyla that contribute to that biomass. An examination of physical oceanographic data reveals a ... assemblages d'invertébrés de la mégafaune benthique des habitats du plateau dans le secteur Atlantique, à ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 167–192 : Author(s): Lockhart, S.J. and C.D. Jones
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Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean.
investigated using biological data collected by a Japanese commercial fishing vessel during the austral summer ... of antifreeze in the former species. Dissostichus eleginoides showed a resting stage in sexual ... maturity, while D. mawsoni was in developing condition. In D. mawsoni, small fish contributed a very low ... Toothfish are the largest nototheniid species in the Southern Ocean, with two species having a cir ... investigated using biological data collected by a Japanese commercial fishing vessel during the austral summer ... the lack of antifreeze in the former species. Dissostichus eleginoides showed a resting stage in ... sexual maturity, while D. mawsoni was in developing condition. In D. mawsoni, small fish contributed a ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 145–153 : Author(s): Taki, K., M. Kiyota, T. Ichii and T. Iwami
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The use of analysis of penguin stomach contents in simultaneous study of prey and predator parameters
found in the stomach of a given penguin prevents the pooling of krill lengths from different samples ... . Samples taken in Bahía Esperanza were used to illustrate the different approaches to this analysis. A ... for analysis because lack of independence between krill specimens found in the stomach of a given ... were used to illustrate the different approaches to this analysis. A highly significant linear ... propose de considerer que la methode correcte est celle des modeles ANOVA a emboitements, etant donne ... preleves dans la Bahfa Esperanza sont utilises pour expliquer les differentes approches a cette analyse ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 367–375 : Author(s): Marschoff, E. and B. González
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An index of per capita recruitment
animals spawn; (iii) a representative sample of the population is available; and (iv) the proportion of ... largest with high values of R 1; increasing M tends to offset this effect but only slightly. A simple ... spawners and recruits. PCR was also able to track cycles in recruits per spawner after a 20% random ... variability in mortality and proportion of age-l spawners was introduced, although errors were larger. A time ... does not vary over age or between years; (ii) 100% of age-l animals spawn; (iii) a representative ... ; increasingM tends to offset this effect but only slightly. A simple population model was then constructed to ... . PCR was also able to track cycles in recruits per spawner after a 20% random sampling error was added ... and proportion of age-l spawners was introduced, although errors were larger. A time series of PCR ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 179–196 : Author(s): Hewitt, R
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Assessment and tag program adaption methods for exploratory fisheries in the CAMLR Convention Area: an example application for Division 58.4.3a
Convention Area: an example application for Division 58.4.3a Abstract / Description: A methodology for the ... catch-at-length/age data and tagging data at-length/age. A simple algorithm, based upon the Petersen ... tagging levels that will produce an expected abundance estimate in the following year of a given precision ... 2AZ United Kingdom Email – r.hillary@imperial.ac.uk Abstract A methodology for the initial stock ... and tagging data at-length/age. A simple algorithm, based upon the Petersen abundance estimator, is ... will produce an expected abundance estimate in the following year of a given precision whilst ensuring ... Convention CAMLR. La méthode d’évaluation est conçue de façon à ce que les données de marquage–recapture ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 101–113 : Author(s): Hillary, R.M
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CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass
). A relatively high correlation between mean monthly values of CVDF and CEVDF, and CVDF and CHT was ... observed. However, the correlation between daily mean values was quite low as a result of significant ... of hauls per day ranged from 1 to 15. The duration of hauls ranged from 0.1 to 16 hours. When a final ... ) and catch per hour of trawling (CHT). A relatively high correlation between mean monthly values of ... quite low as a result of signifi cant fl uctuations in haul duration due to the different fi shing ... duration of hauls ranged from 0.1 to 16 hours. When a fi nal product of higher quality was required, haul ... principales sources de données et les données primaires ayant servi à les calculer. Les principaux indices ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Author(s): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov
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Krill fishing in the Scotia Sea in relation to bathymetry, including the detailed distribution around South Georgia
. Although these data give a general idea of where the fishery has operated, they do not reveal the localised ... negligible fishing occurred in the following two seasons. In 1994 the fishery was almost totally based over a ... this area but also operated further west on a range of banks associated with submarine valleys. The ... . Altliough these data give a general idea of where the fishery has operated, they do not reveal the ... a large shallow bank area on the northeast shelf edge. During 1995 the fishery was still ... predominantly in this area but also operated further west 011 a range of banks associated with submarine ... donnees a echelle precise (0.5" de latitude x 1" de longitude) montrent que dans la iner d u Scotia ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 1–17 : Author(s): Murphy, E.J., P.N. Trathan, I. Everson, G. Parkes and F.H.J. Daunt
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Book review – Biogeographic Atlas of the Southern Ocean
: This is a review of De Broyer, C., P. Koubbi, H.J. Griffiths, B. Raymond, C. Udekem d’Acoz, A.P. Van de ... Putte, B. Danis, B. David, S. Grant, J. Gutt, C. Held, G. Hosie, F. Huettmann, A. Post and Y. Ropert ... in geographic space and geological time on a global scale. The Southern Ocean is still a vast ... biodiversity data collected todate to increase our understanding on the distribution of a large num ber of ... processes of a significant number of organisms in this region. The atlas begins with a comprehensive ... history of biogeography and bioregionalisation in the Southern Ocean that is followed by a description ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 45-46 : Author(s): Reid, K.