Résultats de la recherche

1. Krill distribution pattern due to water structure and dynamics near the South Sandwich Islands in January–February 2000 (Krill Synoptic Survey 2000)

   are transported to South from East of archipelago, and may be mixed with krill of the 1st group. It is ... very probable that krill concentrated in stable eddies to East of archipelago may be kept there for a ...

   Meeting Document : WG-EMM-00/33 : Auteur(s): V. Sushin, P. Chernyshkov, V. Shnar, F. Litvinov and K. Shulgovskiy (Russia)

2. Variability in krill length distribution in 48.1 derived from data collected by scientific observers

   generalised additive mixed models (GAMM) to evaluate the spatial and temporal patterns of length in Antarctic ... . Median krill length showed a complex pattern and varied significantly with fishing location, fishing ... Subarea 48.1 needs to be modified in order to gain a comprehensive understanding of the temporal and ... longer term. Krill length measurements should also be conducted on all vessels in every fishing season to ...

   Meeting Document : WG-EMM-15/16 : Auteur(s): P. Ziegler, S. Kawaguchi D. Welsford and A. Constable (Australia)

3. Biology, distribution and abundance of Antarctic krill (Euphausia superba) and by-catch

   was observed to be 1:l.17 though it differs from swarm to swarm. The analysis showed that 47% of ... 'S to 61°13'S and long.30°02'E to 40°05'E. These were analysed onboard FORV Sagar ... trawl. The length frequency analysis indicated a bimodel distribution with 19-20 mm and 53-54mm as the ... krills with high intensively feeding population and 25% with moderate feeding population which indicate ...

   Meeting Document : WG-EMM-98/37 : Auteur(s): A. Anrose, Z. Klusek, M.K.R. Nair and M. R. Bhoopendranath (India)

4. Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring

   unknown. The aim of this study was to improve the understanding of the krill's interaction with the ... 's energy demand and swimming capacity increase with size and age. The degree of sea ice ... interface (0-2 m) and comparing the size and developmental stage composition of krill with the pelagic ... population (0-500 m). Results show that the population in the Northern Weddell Sea consisted mainly of krill ...

   Meeting Document : WG-EMM-16/P16 : Auteur(s): F. Schaafsma, C. David, E. Pakhomov, B. Hunt, B. Lange, H. Flores, J.A. van Franeker

5. Important aspects of prey distribution for the formation of foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island

   suggested that important factors for the formation of daytime foraging areas may be mainly 1), while those ... during pup-rearing period. It was suggested that important factors may be mainly 4) and 6). In conclusion ... , feeding success may not be necessarily associated with dense aggregation of krill, but with distribution ... of overnight foragers may be primarily 3) and secondarily 6) considering chinstrap penguins may have ...

   Meeting Document : WG-EMM-97/28 : Auteur(s): Bengtson, J.L., Hiruki, L.M., Naganobu, M., Ichii, T., Meyer, W.R., Cameron, M.F., Boveng, P., Takao, T., Miura, A., Jansen, J.K., Kawaguchi, S., Hayashi, T.

6. Estimating the biodiversity of Planning Domain 5 (Marion and Prince Edward Islands – Del Cano – Crozet) for ecoregionalisation

   animals from Planning Domain 5, as is the case with by-catch mortality, it will be necessary for CCAMLR to ... evidence that populations and species may segregate their feeding grounds, which also will need to be ... ). The working group concluded that subtropical areas north of the Planning Domain 5 should be included ... started to evaluate pressures and areas of research that need to be defined (spawning and nursery areas ...

   Meeting Document : WG-EMM-12/33 Rev. 1 : Auteur(s): P. Koubbi (France), R. Crawford (South Africa), N. Alloncle, N. Ameziane, C. Barbraud, D. Besson, C.-A. Bost, K. Delord, G. Duhamel (France), L. Douglass (Australia), C. Guinet (France), G. Hosie (Australia), P.A. Hulley (South Africa), J. O. Irisson (France), K.M. Kovacs (Norway), R. Leslie, A. Lombard, A. Makhado (South Africa), C. Martinez (France), S. Mormede (New Zealand), F. Penot (France), P. Pistorius (South Africa), P. Pruvost (France), B. Raymond (Australia), E. Reuillard, J. Ringelstein (France), T. Samaai (South Africa), P. Tixier (France), H.M. Verheye (South Africa), S. Vigetta (France), C. von Quillfeldt (Norway) and H. Weimerskirch (France)

7. Mitigating killer whale depredation on demersal longline fisheries by changing fishing practices

   identify fishing practices that could reduce odontocete depredation, with a focus on killer whales (Orcinus ... be more accessible to whales that are initially distributed on peri-insular shelves. The CPUE was ... with significant losses for fisheries and potential impacts on wild populations of depredating species ... orca) interacting with Patagonian toothfish (Dissostichus eleginoides) longliners off the Crozet ...

   Meeting Document : WG-FSA-14/P03 : Auteur(s): P. Tixier, J. Vacquie Garcia, N. Gasco, G. Duhamel and C. Guinet

8. Preliminary analysis of seabird by-catch in the South Georgia icefish fishery

   suggest that there may be a year effect. We were unable, with the limited data available, to separate ... trawl fishery for icefish (Champsocephalus gunnari) in Subarea 48.3. From December 2000 – February 2001 ... 92 birds were caught, principally black-browed albatross and white-chinned petrel, with 93% of the ... birds being caught in February. GAM/GLM analysis suggested that month and vessel were significant ...

   Meeting Document : WG-FSA-01/30 : Auteur(s): D.J. Agnew, N. Ansell and J.P. Croxall (United Kingdom)

9. Fitting a von Bertalanffy growth model to length-at-age data accounting for length-dependent fishing selectivity and length-stratified sub-sampling of length frequency samples

   units are selected with a probability that is a function of the response. In sampling to obtain fish to ... random length frequency sample. When the selectivity of the gear combined with availability of fish to be ... parameter estimation has been studied for linear and generalized linear, and linear mixed models but since ...

   Meeting Document : WG-FSA-SAM-05/13 : Auteur(s): S.G. Candy (Australia)

10. Classification of Southern Ocean krill and icefish echoes using Random Forests

    are similar to those for many co-occurring fish species that do not possess swim bladders. At South ... pelagic aggregations, which can be difficult to distinguish acoustically from large krill layers. Mackerel ... icefish are currently surveyed using bottom-trawls, but the resultant estimates of abundance may be biased ... during surveys. The final random forest classified krill, icefish, and mixed aggregations of weak ...

    Meeting Document : WG-EMM-16/23 : Auteur(s): N. Fallon, S. Fielding and P. Fernandes

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