Résultats de la recherche

1. Fishery Report 2014: Dissostichus eleginoides Prince Edward Islands South African EEZ (Subareas 58.6 and 58.7)

   represented by the year in which that season ended, e.g. 2014 represents the 2013/14 CCAMLR fishing season ... , with a total catch limit of 2 500 tonnes, were issued for 1997. 3. Within the South African EEZs ... . In 2005, South Africa licensed five operators with fixed proportional allocations, and a catch limit ... fishing was undertaken during 2004 and 2005, but historically, most of the catch was taken with autoline ...

   Document : Site Section: Publications

2. Development of the Southern Ocean Continuous Plankton Recorder survey

   as early as July (midwinter). The large areal and temporal scale means that it is difficult to ... icebreaker Shirase in collaboration with the Japanese Antarctic programme. Shirase has a fixed route and time ... of records. The most successful seasons to date have been the 1997/1998, 1999/2000 and 2000/2001 ... austral summers with 20, 31 and 26 tows, respectively. The 1999/2000 season included a unique, nearly ...

   Meeting Document : WS-BSO-07/P4 : Auteur(s): Hosie, G., M. Fukuchi and S. Kawaguchi

3. Estimating confidence intervals for fish stock abundance estimates from trawl surveys

   likelihood ratios from Aitchison's delta distribution. Simulation tests of the method show that unbiased ... estimates of density and biomass can be obtained and that the estimated confidence intervals have close to ... fish and the coefficient of variation (CV) is high. The upper confidence bound appears to be slightly ... . Simulation tests of the method show that unbiased estimates of density and biomass can be obtained and that ... likelihood. However, the likelihood is a function of the vector b, so that the log-likelihood has to be ... %). The upper confidence bounds appear to be slightly too close to the mean, with REFERENCES ... upper confidence bound appears to be slightly less reliable than the lower. Resume Developpement ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 203–207 : Auteur(s): de la Mare, W.K

4. How much do icefish (Notothenioidei, Channichthyidae) eat in the southern Scotia Arc and the Antarctic Peninsula region?

   southern Scotia Arc in 1996, 1999, 2001, 2002, 2003, 2007 and 2009, and in 2006 off the north western part ... study range from 0.5 – 2.5% body per day. These values may be exceeded locally and temporarily in summer ... empty their stomachs completely before taking in new food. If we assume that digestion of krill takes ... line with those from previous more limited studies. Author(s):  K.-H. Kock (Germany), C.D. Jones (USA ...

   Meeting Document : WG-FSA-10/18 : Auteur(s): K.-H. Kock (Germany), C.D. Jones (USA), J. Gröger and S. Schöling (Germany)

5. e-sc-xxviii-a8.pdf

   ... Subgroup agreed that the present provision of a dB-difference window with 10 mm length classes could be ... O’Driscoll advised that the results for juvenile fish should be treated with some caution. A comparison of ... ) were considered to be of highest priority: (i) to provide advice that will assist in quantifying ... insonified by the downward-looking TS-probe, and that there may be considerable differences between the application/pdf attached to:SG-ASAM-09

   Meeting Report : SG-ASAM-09

6. Catch removals due to killer and sperm whale interactions across sub-Antarctic fisheries

   . The results indicated that these removals were large, totalling more than 6,600 t of toothfish between ... 2009 and 2016 with an overall annual mean of 837 t [95% CI 480-1,195 t], comprised of 317 t [232-403t ... varied between areas, with the largest estimates found at Crozet Islands, where on average 279 t [179-379 ... Abstract:  Fisheries are human activities that alter resource availability for species in marine ...

   Meeting Document : WG-FSA-2019/33 : Auteur(s): P. Tixier, P. Burch, F. Massiot-Granier, P. Ziegler, D. Welsford, M.-A. Lea, M.A. Hindell, C. Guinet, S. Wotherspoon, N. Gasco, C. Péron, G. Duhamel, R. Arangio, R. Tascheri, S. Somhlaba and J.P.Y. Arnould

7. Assessing the feasibility of regional surveys of land-based predator abundance in the Southern Ocean: a framework for decision making and planning

   abundance of land-based predators. At the 2001 meeting of WG-EMM it was proposed that a workshop be held in ... that it be applied at the workshop to a selected region as a means of both assessing and/or developing ... that new technologies and methodologies need to be considered for use wherever possible. Author(s):  C ... the framework and undertaking preliminary plans for the region. The framework is designed to be ...

   Meeting Document : WG-EMM-02/45 : Auteur(s): C. Southwell (Australia)

8. e-sc-xxxiv-a6.pdf

   ... that trends in sea-ice extent on the krill fishing grounds should be included in the Krill Fishery ... that the Secretariat correspond with those Members that had participated in that fishery to obtain ... C2 forms. 2.8 WG-EMM agreed that the information sought by WG-SAM would also be useful in ... agreed that the length frequencies for krill in Subarea 48.1 would be better represented if grouped into application/pdf attached to:WG-EMM-15

   Meeting Report : WG-EMM-15

9. A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem

   , together with suggested further areas for investigation. Amongst the key inferences of the study are that ... trend levels that has become available since the postulate was first advanced is discussed. The ... stable; (iv) baleen whales have to be able to achieve relatively high growth rates to explain observed ... trends; and (v) Laws’ (1977) estimate of some 150 million tonnes for the krill surplus may be appreciably ... interactions with prey organ- isms that must be aggregated to exceed some threshold density (e.g. baleen ... taken between 1973 and 2001 (Miller, 2002). The fishery has been stable for the past nine years with ... Georgia in the 1980s but not in the 1990s, so that the period of the ‘krill surplus’ might now be at an ... Antarctic seabird populations with regional climate change, Croxall et al. (2002) concluded that in ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Auteur(s): Mori, M. and D.S. Butterworth

10. UPDATE OF THE INTEGRATED STOCK ASSESSMENT FOR THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS (DIVISION 58.5.2)

    ) analysis of the age-length frequency data suggested that ALKs could be pooled across sub-fisheries without ... significant loss of information. Pooling the ALKs in this way meant that all commercial catch data could be ... commercial catches with catch-at-age proportions by applying age length keys (ALKs) to gear- type/ground (i.e ... random ageing error. CASAL allows a single ageing error matrix to be defined and applies this matrix to ...

    Meeting Document : WG-FSA-09/20 : Auteur(s): S.G. Candy and D.C. Welsford (Australia)

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