Résultats de la recherche

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

   observer data. The stock size estimates for research blocks were revised following advice in the last WG ... 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 ... rate (sample size / estimated stock size) would not exceed 3.5 %. The tentatively estimated sample ...

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

2. Medium-term research plan for the Ross Sea toothfish fishery

   Abstract:  The aim of this paper is to review the management of the Ross Sea toothfish fishery and ... to identify key research objectives for the fishery over the next 3–5 years in relation to Article II ... of the Convention. The paper focuses primarily on Antarctic toothfish, as catches of Patagonian ... summarising the management and operation of the fishery up to and including the 2012/13 fishing year. This ...

   Meeting Document : WG-FSA-14/60 : Auteur(s): Delegations of New Zealand, Norway and the United Kingdom

3. Research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.3a

   Abstract:  The current season (2014/15) is the final one of the first three-season research which ... began in 2013 in data-poor fisheries. In the present report, catch, effort and biological data recorded ... by all effective vessels were analyzed for the improvement of stock assessment in the research blocks ... . Based on the result, the next three-season (2016-18) research plan in Division 58.4.3a is also presented ...

   Meeting Document : WG-SAM-15/03 : Auteur(s): Delegation of Japan

4. Research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.2

   Abstract:  The current season (2014/15) is the final one of the first three-season research which ... began in 2013 in data-poor fisheries. In the present report, catch, effort and biological data recorded ... by all effective vessels were analyzed for the improvement of stock assessment in the research blocks ... . Based on the result, the next three-season (2016-18) research plan in Division 58.4.2 is also presented ...

   Meeting Document : WG-SAM-15/04 : Auteur(s): Delegation of Japan

5. Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem

   Abstract:  Changes in the Antarctic ecosystem have been triggered by anthropogenic and natural ... factors. This paper reviews the scientific information of whales that could be indicative of changes in ... the East Antarctica ecosystem in the context of two hypotheses, the ‘krill surplus’ hypothesis in the ... middle of the past century and the recovery of krill-eater large whales since the 1980’s. There was an ...

   Meeting Document : WG-EMM-16/64 : Auteur(s): Y. Fujise and L.A. Pastene

6. Results of study of the oogenesis characteristics of Antarctic toothfish (Dissostichus mawsoni Norman 1937) (Nototheniidae) from Subareas 88.1 and 88.2 (Ross Sea)

   Abstract:  The results of the histological analysis of the Antarctic toothfish (Dissostichus ... mawsoni) reproductive system, caught in December-March, 2004-2005 by the longliner VOLNA in subareas 88.1 ... and 88.2 in the Ross Sea are presented. The morphological parameters, indices of gonads have been ... described. The histological criteria of the assessment of the ovary maturity stages and cytological ...

   Meeting Document : WG-FSA-07/49 : Auteur(s): S. V. Piyanova and A.F. Petrov (Russia)

7. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2005/06

   Abstract:  The exploratory fishery for Antarctic toothfish (D. mawsoni) has been operating for ... toothfish and the associated bycatch. All SSRUs in the two subareas except for 881D and 882C have now been ... fished. The 2006 D. mawsoni catch was the second highest on record with a total of 3388 t against a ... combined catch limit of 3451 t. The subarea catch limit was almost reached in both Subarea 88.1 and 88.2 ...

   Meeting Document : WG-FSA-06/29 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)

8. A single-area stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in SSRU 88.2E for the 2004/05 season

   model for Antarctic toothfish (Dissostichus mawsoni) in SSRU 88.2E. The model structure was assumed to ... be the same as used for the Antarctic toothfish in the Ross Sea (see Dunn et al. 2005b), except that ... catch removals were modelled as a single fishery. Model fits to the data were adequate, with the tag ... -release and recapture data providing the most information on stock size, but with the catch-at-age data ...

   Meeting Document : WG-FSA-05/31 : Auteur(s): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)

9. An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort

   Abstract:  A new method for estimating illegal fishing effort is put forward. The results from ... this new method are similar to those of the Agnew and Kirkwood (2005) method, and this suggests that ... the current method is adequate under circumstances of low evasion and when good knowledge exists that ... zero observations reflect zero illegal fishing. The new method performs better in the case of zero ...

   Meeting Document : WG-FSA-05/P7 : Auteur(s): Ball, I.

10. EXTRAPOLATING CONTINUOUS PLANKTON RECORDER DATA THROUGH THE SOUTHERN OCEAN USING BOOSTED REGRESSION TREES

    and scale-dependent relationship between species abundance and available environmental data. The ... , called BRT (Boosted Regression Trees), to data on the distribution of Oithona similis, a small cyclopoid ... copepod which is abundant through much of near-surface waters of the Southern Ocean. A large dataset (> ... ;19 000 records) of abundances of O. similis were measured during the SCAR Southern Ocean Continuous ...

    Meeting Document : WG-SAM-08/12 : Auteur(s): M.H. Pinkerton, A.N.H. Smith (New Zealand), B. Raymond, G. Hosie (Australia) and B. Sharp (New Zealand)

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