Résultats de la recherche

1. Modelling and Decision Making as Part of the CCAMLR Management Regime

   Abstract:  This paper outlines a stylised scheme designed to address the multi-objective decision ... horizons, time steps, constraints and data) were identified in an attempt to provide a blueprint for the ... formulation of a suitable decision-making protocol for management purposes. Author(s):  D.G.M. Miller (South ...

   Meeting Document : WG-CSD-88/10 : Auteur(s): D.G.M. Miller (South Africa)

2. An analysis of within-season recaptures of tagged toothfish

   Abstract:  In response to a request from WG-SAM, the secretariat inspected the available data on ... within-season recaptures varied spatially and a particular ‘hot-spot’ was found over a northern, and ...

   Meeting Document : WG-FSA-13/01 : Auteur(s): Secretariat

3. Revised South African work plan for 2014/15 for the joint Japan/South Africa research on Dissostichus spp. in Subarea 48.6

   Abstract:  A multi-year plan for research by Japan and South Africa aimed at yielding a tag-based ... 41-04. This paper submits a work plan for the South African contribution to the third year of this ...

   Meeting Document : WG-SAM-14/11 : Auteur(s): Delegation of South Africa

4. An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL

   been resolved. The results presented here indicate a general downward bias in the expected recaptures ... showing that the mark-recapture observations indicates a smaller stock size than the other datasets. This ... is consistent with the problems discussed of the potential bias of a single-area model in trying to ... cover a highly spatially structured stock. It is recommended that the mark-recapture data not be ...

   Meeting Document : WG-FSA-06/64 : Auteur(s): A. Constable, S. Candy, T. Lamb and I. Ball (Australia)

5. Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48

   Abstract:  CCAMLR Conservation Measure 32/X sets a 1.5 million metric ton precautionary catch ... . Therefore, we consider the following tradeoff to be important: choosing a biologically explicit alternative ... and delaying implementation, or choosing a biologically unrealistic alternative and implementing a ... catches to set limits can be categorized as having a low potential for delaying implementation, but they ...

   Meeting Document : WG-EMM-01/29 : Auteur(s): G. Watters and R. Hewitt (USA)

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

   size categories. A total of 55 items weighing 10.78kg was collected. The number of items was 35% less ... follows a declining trend since 1996/97. The proportion of polypropylene packaging bands removed was also ... at Signy Island has been showing a declining trend since 1993/94. This is promising. The longevity of ... plastics and other materials with a high resistence to degradation in the marine environment remains a ...

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

7. Catch rates and length composition data of the longline fishery for Dissostichus eleginoides at the Prince Edward Islands: 1996/97

   eleginoides made in the vicinity of the Prince Edward Islands, a South African territory in the Indian Ocean ... interest in the fishery leading to a great influx of vessels to the area. By the end of 1996 up to 40 ... around 0.7 kg per hook at the end of 1996 a steady decline in CPUE to less than 0.4 kg per hook towards ... Georgia longline fisheries. A decrease in fish sizes was also noted since the inception of the fishery ...

   Meeting Document : SC-CAMLR-XVI/BG/28 : Auteur(s): Delegation of South Africa

8. Pilot study on electrophoretic variation and stock structure in the mackerel icefish, Champsocephalus gunnari, South Georgia waters

   Abstract:  The use of allozymes as a tool in stock structure analysis was examined in the ... commercially-exploited mackerel icefish, Champsocephalus gunnari, together with a preliminary assessment of ... of icefish samples (N = 18 to 42 per sample) indicated stock separation on a local scale. Genetic ... index, FIS) detected at most loci which were due mainly to heterozygote deficiencies. There was a ...

   Meeting Document : WG-FSA-90/10 : Auteur(s): G.R. Carvalho and D.P. Lloyd-Evans (United Kingdom)

9. Infectious diseases of Antarctic penguins: current status and future threats

   Antarctica. From previous reports we know that penguin species are highly susceptible to a number of ... increase over the last 50 years.  However, issues of data not being published and a lack of formal risk ... System, means that our understanding is still patchy. A feather loss condition of unknown etiology ... requires urgent further investigation. Also of concern, is that a number of mass mortality events have ...

   Meeting Document : WG-EMM-14/53 : Auteur(s): W.W. Grimaldi, P.J. Seddon, P.O.B. Lyver, S. Nakagawa and D.M. Tompkins (New Zealand)

10. Updating the Antarctic krill biomass estimates for CCAMLR Subareas 48.1 to 48.4 using available data

    Abstract:  We present a novel index of Antarctic krill biomass in CCAMLR subareas 48.1 to 48.4 ... also suggest that exploitation rates are low and that there is no evidence of a systematic change in ... the krill stock. This evidence suggests that the trigger level is a highly precautionary operational ... assessment of the krill stock, at scales relevant to the Commission’s conservation objectives, is a ...

    Meeting Document : WG-EMM-15/28 : Auteur(s): S. Hill, A. Atkinson, C. Darby, S. Fielding (United Kingsom), B. Krafft, O.R. Godø, G. Skaret (Norway), P. Trathan, J. Watkins (United Kingdom)

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