Résultats de la recherche

1. Déplacement proposé de la limite entre les sous-zones 88.1 et 88.2

   Subarea 88.1 and Statistical Subarea 88.2 in order to harmonise with the exploratory fisheries for ... Dissostichus mawsoni in those subareas and with other conservation measures in force. The proposal would move ... the boundary of Subareas 88.1 and 88.2 from 170°W to 150°W with small-scale research units (SSRUs ... complexity that currently adds an administrative burden on Members and the Secretariat in respect of fishery ...

   Meeting Document : CCAMLR-XXXVII/22 : Auteur(s): CCAMLR Secretariat

2. Influence of the quality and quantity of data from a multi-year tagging program on bias and precision of biomass estimates from an integrated stock assessment – update

   and the resulting data should not be used in stock assessments with only few years of data available ... . Biomass estimates generally improved with more and better quality tagging data, however important nuances ... emerged within this overall trend. The results show that in the early stages of the tagging program, a ... with a low tag size-overlap, even with large numbers, is likely to result in overestimates of biomass ...

   Meeting Document : WG-FSA-12/18 : Auteur(s): P.E. Ziegler (Australia)

3. Progress report on the scientific data compilation and analyses in support of the planning of a potential Marine Protected Area (MPA) east of the zero meridian in the Weddell Sea (Antarctica)

   6.39) as a useful way forward to achieve consensus and offered to work collaboratively with Norway, the ... of Domain 4 for submission to the Commission in 3 to 4 years. Work on this project commenced with an ... . Griffith, T. Hatterman, A. Høgestøl, Y. Kasajima, A. Lowther, S. Moreau, B. Njaastad, P. Koubbi, C. von ... Quillfeldt, T. Brey, K. Teschke and O.A. Bergstad Title:  Progress report on the scientific data compilation ...

   Meeting Document : SC-CAMLR-38/BG/14 : Auteur(s): G. Griffith, T. Hatterman, A. Høgestøl, Y. Kasajima, A. Lowther, S. Moreau, B. Njaastad, P. Koubbi, C. von Quillfeldt, T. Brey, K. Teschke and O.A. Bergstad

4. An ecological risk assessment of current conservation measures for krill fishing in East Antarctica (CCAMLR Divisions 58.4.1 and 58.4.2)

   measures that are relevant to Divisions 58.4.1 and 58.4.2 sufficiently mitigate the risk of a krill fishery ... disproportionately concentrating catches in areas that are also important to krill predators. In particular, this ... , crabeater seals and Adélie penguins, in parallel with the currently agreed krill biomass estimates across ... assessment found the regional risk of the current conservation measures in Divisions 58.4.1 and 58.4.2 to be ...

   Meeting Document : WG-EMM-18/37 : Auteur(s): N. Kelly, L. Emmerson, S. Kawaguchi, C. Southwell and D. Welsford

5. Beach debris survey Signy Island, South Orkney Islands 1999/2000

   the lowest recorded (18%) and may indicate that the ban on their use aboard fishing vessels brought ... revealed that 60% had come from ships or fishing vessels and7% were from Signy Research Station. The rest ... comprised wood (11%) and items with noobvious source (22%). Of particular concern was the quantity of ... polystyrene foam whichaccounted for 31% of all items recovered and 46% of items small enough to be ingested ...

   Meeting Document : SC-CAMLR-XIX/BG/06 : Auteur(s): Delegation of the United Kingdom

6. Variation in the distribution of Antarctic krill Euphausia superba around South Georgia

   island. Cluster analysis revealed that the length-frequency distributions could be grouped into 5 main ... types with relatively simple biological characteristics: cluster 1 were medium-sized year 2+ krill (mean ... probably 3+ and older (mean size 49.5 mm); cluster 4 and 5 were small krill, mostly year 1 + either with or ... ). The PCA for all cruises combined showed that there were no obvious differences in the type of krill ...

   Meeting Document : WG-EMM-97/47 : Auteur(s): Daly, H.I., Murray, A.W.A., Watkins, J.L.

7. Age-structured production model for toothfish at South Georgia

   decaying function of age, with three easily interpretable parameters. When only a single selectivity curve ... frequency data achieved last year, but the fit was still poor. The fit to the CPUE was also poor. With ... selectivity parameters allowed to be estimated on an annual basis the fits are substantially improved. However ... , by allowing all parameters to be estimated in this way the model is over-parameterised and regularly ...

   Meeting Document : WG-FSA-SAM-05/18 : Auteur(s): A. Payne, G.P. Kirkwood, R. Hillary and D.J. Agnew (United Kingdom)

8. THE SELECTION OF TRIPS BASED ON DATA METRICS FOR THE ASSESSMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA

   trips were used to define a range for various data quality metrics considered to be informative with ... informative datasets were selected comprising trips with high (above median) rates of recovery of previously ... respect to tagging data. Other trips with data quality metric values within these ranges were added to the ... dataset. Where the initial informative dataset was selected comprising trips with above median rate of tag ...

   Meeting Document : WG-FSA-09/35 : Auteur(s): D.A.J. Middleton (New Zealand)

9. Evaluating length-frequency data and length-based performance indicators in new and exploratory fisheries

   been difficult. In this paper, we show that length-frequency data on their own have little inherent ... conclusive information about stock status. While length-frequency data can be useful in assessments when ... integrated with other more informative estimators for stock abundance and productivity, interpretation of ... trends in length-frequency data can be misleading and should be avoided. Author(s):  P.E. Ziegler, D.C ...

   Meeting Document : WG-FSA-10/43 : Auteur(s): P.E. Ziegler, D.C. Welsford and A.J. Constable (Australia)

10. Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.1

    that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of coefficient ... variance of biomass estimate from the bootstrapped procedure, under the condition that the exploitation ... sizes turned out to be larger in many blocks and smaller in a few blocks over the data poor-fisheries ... least 3 years with the same sample size as decided at the last CCAMLR meeting for the current research ...

    Meeting Document : WG-FSA-13/38 : Auteur(s): Delegation of Japan

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