Resultados de la búsqueda
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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 : Autor(es): Taki, K., M. Kiyota, T. Ichii and T. Iwami
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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 : Autor(es): Irvine, L.G., J.R. Clarke and K.R. Kerry
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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 : Autor(es): 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 : Autor(es): Murphy, E.J., P.N. Trathan, I. Everson, G. Parkes and F.H.J. Daunt
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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 : Autor(es): Hewitt, R
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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 : Autor(es): Reid, K.
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Age–length composition of mackerel icefish (Champsocephalus gunnari, Perciformes, Notothenioidei, Channichthyidae) from different parts of the South Georgia shelf
the eastern, northern, western and southern parts of the shelf, and near Shag Rocks, revealed a ... population, whether a fishery is operating or not. As a result of this, as well as the species' ability ... , northern, western and soutlnern parts of tlne shelf, and near Shag Rocks, revealed a similar age-leingtl ... , whether a fishery is operating or not. As a result of this, as well as the species' ability to live not ... sovietiques de recherche et de commerce de 1970 a 1991 ont servi a determiner la composition dge-longueur du ... importante de poissons matures 5 l'ouest est like a la migration des individus matures des rkgions est et ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 133–146 : Autor(es): Frolkina, G.A
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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 : Autor(es): Hillary, R.M
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Assessment of krill flux factors in waters of South Orkney Islands during summer 1996
a product of two variables integrated over the depth range 0 to 200 m: krill density (g/m 3) and ... study area perimeter. Mean krill transport rate was 7.2 tonnes/hour/n mile with a standard deviation of ... experiment, a preliminary estimate of krill outflow from the study area into adjacent areas would be ... across boundaries of the study area was calculated as a product of two variables integrated over the ... tonnes/hour/n mile with a standard deviation of 15.5 tonnes/hour/n mile. Significant variability of ... geostrophic velocities obtained during the experiment, a preliminary estimate of krill outflow from the ... krill dans la sous-zone 48.2. La zone d'etude (80 X 240 milles) se situe a la confluence des eaux du ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 195–204 : Autor(es): Kasatkina, S.M., V.N. Shnar, M.I. Polischuk, A.M. Abramov and V.A. Sushin
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Characteristics of krill aggregations in the South Sandwich Islands subarea in January–February 2000
patterns of krill aggregations and distribution of krill biomass density were analysed with a view to ... million tonnes. It was shown that the removal of biomass up to a recommended precautionary limit could be ... possible from such grounds despite a predicted low catch per hour of trawling. File: 10kasatkina.pdf ... aggregations and distribution of krill biomass density were analysed with a view to detecting potential fi ... tonnes. It was shown that the removal of biomass up to a recommended precautionary limit could be ... possible from such grounds despite a predicted low catch per hour of trawling. Résumé Pendant la ... krill présent, on notait du krill épars, du krill qui s’était dispersé et des essaims. Cette étude a ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 145–164 : Autor(es): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky