Résultats de la recherche

1. Analysis of variability of krill size and fish by-catch in Japanese krill fishery based on scientific observer data

   objective of a study with considering the cost of observer deployment. Author(s):  T. Okuda and M. Kiyota ... datasets were calculated by the multistage sampling formula with the variance terms derived from the ... suggest that data collection by scientific observers onboard commercial vessels provide an important ...

   Meeting Document : WG-EMM-12/68 : Auteur(s): T. Okuda and M. Kiyota (Japan)

2. Using tag-recapture data to estimate catchability of a series of random stratified trawl surveys

   estimate of survey catchability, we recommend that a non-informative prior with uniform distribution be ... which collectively result in an estimate of catchability that can be well below or above 1. Author(s ... stratified trawl survey (RSTS) was estimated by comparing abundance estimates of the survey with abundance ... address potential bias in the estimation of q and conclude that the potential bias that may arise from ...

   Meeting Document : WG-SAM-15/34 : Auteur(s): W. de la Mare, P. Ziegler and D. Welsford (Australia)

3. Scientific requirements for an orderly development of the krill fishery

   of these requirements is also provided. The paper recommends that in keeping with the precautionary ... tonnes). During the Commission deliberations on this issue Australia noted that while the scientific data ... required to be established immediately, however at a minimum there needs to be mechanisms developed to ... ensure that they are in place prior to any problems arising in the fishery. The rationale for the timing ...

   Meeting Document : WG-EMM-07/23 : Auteur(s): A. Constable, G. Slocum and S. Nicol (Australia)

4. Progress in the evaluation of management strategies for the Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region

   misspecification that could then be evaluated using more computationally complex MSE approaches. We apply this to ... approaches. The Scientific Committee of CCAMLR has recommended MSE be used to determine the extent to which ... targets used by CCAMLR has been based on MSE simulations, formal MSE studies have yet to be fully ... of toothfish that have evaluated the sensitivity of models and the resulting estimates of sustainable ...

   Meeting Document : WG-SAM-15/48 : Auteur(s): S. Mormede, A. Dunn, S.J. Parker and S.M. Hanchet (New Zealand)

5. DEVELOPMENT OF SPATIALLY EXPLICIT AGE-STRUCTURED POPULATION DYNAMICS OPERATING MODELS FOR ANTARCTIC TOOTHFISH IN THE ROSS SEA

   -mature appeared to be sensible, with a clear pattern that the proportions mature were a function of ... developments towards plausible operating model constructs that may be used for evaluating assessment biases or ... and fine-scale spatial resolution and consider scenarios where abundance can be present over the ... program allows implementation of an aggregate movement model for use with large numbers of areas as a ...

   Meeting Document : WG-SAM-09/18 : Auteur(s): A. Dunn, S. Rasmussen and S. Hanchet (New Zealand)

6. SOUTHERN OCEAN SENTINEL: REPORT OF THE FIRST INTERNATIONAL WORKSHOP IN 2009

   workshop is that it should be possible to identify indicators of climate change impacts in the Southern ... Ocean that these could be used as early warning indicators of future change in both the Southern Ocean ... held at the CCAMLR Headquarters in Hobart in April 2009. The conclusions of that workshop are provided ... to WG-EMM for consideration along with an overview, the program and abstracts of the keynote ...

   Meeting Document : WG-EMM-09/37 : Auteur(s): A.J. Constable

7. Calculating effective releases and recaptures for stock assessments based on tag detection and tagging mortality indices

   that additional work should be undertaken to further develop this method. Previous applications of the ... recommend that the method proposed be used in the Ross Sea region stock assessment and in the Amundsen Sea ... by pairing each individual tag release or recapture event with all other fishing events which ... method showed that when the confounding effects of variable fishing location and time were controlled ...

   Meeting Document : WG-SAM-14/30 : Auteur(s): S. Mormede (New Zealand)

8. Diseases outbreak threatens Southern Ocean albatrosses

   vertebrate population and are likely to be spreading with increased globalisation and climate warming. In the ... controversial long-lining that is assumed to be the cause for the major decline of albatrosses and petrels ... chicks during their first weeks of life with a cyclic pattern between years, but also adult birds that ... for the Southern Ocean environment is today considered to be fishing activities, and especially ...

   Meeting Document : WG-EMM-03/32 : Auteur(s): H. Weimerskirch (France)

9. INVESTIGATING LENGTH AT MATURITY OF ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) BASED ON SCIENTIFIC OBSERVERS’ DATA

   the shelf contained a mixture of fish that had spawned or not, with length at 50% maturity of about ... every year when in that area. If they were resting in the north it is expected residual GSI would be ... to be between the north and the slope areas, with only a proportion of fish coming back to the slope ... maturity value should be treated with caution. Gonadosomatic index has shown promise as a potential index ...

   Meeting Document : WG-FSA-08/48 : Auteur(s): S. Mormede, S. Parker and P. Grimes (New Zealand)

10. Progress report on the research longline fishery of Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa: 2012/13

    Abstract:  The multi-year research plan that was adopted for the exploratory longline fishery in ... nautical miles should be removed. Possible changes to the distribution of the research allocation across ... tabled for discussion and possible implementation. Author(s):  R. Leslie (South Africa), K. Taki, T ...

    Meeting Document : WG-SAM-13/05 : Auteur(s): R. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)

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