Résultats de la recherche

1. The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model

   productivity, health, resilience and services. These objectives are also consistent with CCAMLR’s con ... Subareas 48.1 and 48.2 with the movement case than with the no-movement case, indicating that modelled ... the absence of a relationship with the perturbed variable does not necessarily mean that the ... statistic is insensitive, just that sensitivity does not change with the level of perturbation. The ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Auteur(s): Hill, S.L. and J. Matthews

2. 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)

3. WG-SAM and WG-EMM 2014 Information Note

   with meeting logistics it would be appreciated if online registration could be completed and approved ... photo attached to a user profile on the website is sufficient. This can be uploaded using the 'My ... . Social functions Details of events associated with working group meetings in Punta Arenas will be ... , Chile. WG-EMM: to be announced. Further details can be found in the Information brochure (1.41 MB ...

   Page : Site Section: Meetings

4. e-sc-xxvii-a4.pdf

   ... abundance. 2.18 Secondly, Dr T. Ichii (Japan) commented that top-down control may be unrealistically ... ecosystem effects of fisheries that target finfish. With these changes, the agenda was adopted (Appendix B ... 48, with advice on a Stage 1 subdivision of the precautionary krill catch limit among SSMUs1 to be ... with a review of the development of progress on this topic. The Working Group recalled that, in the application/pdf attached to:WG-EMM-08

   Meeting Report : WG-EMM-08

5. 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

6. Scientific Abstracts 2003

   ’ with details of the publisher, if known; (iii) scientific papers not intended for publication, which ... submitted. Each abstract is preceded with a unique CCAMLR document number, e.g. SC-CAMLR-XXII/BG/11 ... and Management). Unpublished papers must not be cited without written permission of the author(s ... , a 63% reduction compared with last year. The 2001/02 season was characterised by a dramatic ... %. Classifying the waste by source revealed that most had originated from ships or fishing vessels, with four ... , with the continued increase in items found which began last season, clearly shows that the longevity ... , comparisons with the proportion of juvenile krill in simultaneous net samples suggest that the changes in ...

   Document : Site Section: Publications

7. 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)

8. 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)

9. Possible effects of different levels of krill fishing on predators – some initial modelling attempts

   suggested by the Joint Meeting of CCAMLR's Working Group on Krill (WG-Krill) and Working Group for the ... fluctuations together with preliminary information on adult survival and breeding success patterns for certain ... krill predator species. A 'one-way' interaction model is developed, in which krill abundance ... that variability in the annual recruitment of krill results in predator populations being less ... equation (1). Note that T is taken to be the same for each female predator in the population. For seals ... . (It must be stressed that the estimates given in CCAMLR (1993) are preliminary, and do not ... to natural mortality. In setting an upper bound for S?, account must be taken of the fact that ... - paragraphs 7.17 to 7.20). Another is that the estimate for the Addie penguin is known to be negatively ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 79–97 : Auteur(s): Butterworth, D.S. and R.B. Thomson

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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