Résultats de la recherche

1. Results of fish stock assessment survey, South Georgia, December 1987 – January 1988

   's. A survey to monitor these stocks was carried out from December 1987 to January 1988. It ... complements earlier surveys in the same area and showed that most of the stocks are continuing to decline ...

   Meeting Document : SC-CAMLR-VII/BG/23 : Auteur(s): United States of America

2. THE POWER OF ECOSYSTEM MONITORING

   power) to detect effects that trigger management action. 2. Using data from a long-term ecosystem ... monitoring programme of the predators of Antarctic krill Euphausia superba at South Georgia together with a ... % power after 20 years with the probability of a type I error (α) = 0.05). The power increased to >50 ... % when α was increased to 0.2 when the ability to detect change was greater with the predator response ...

   Meeting Document : WG-EMM-08/P11 : Auteur(s): K. Reid, J.P. Croxall and E.J. Murphy

3. Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach

   ommastrephids, is semelparous. It is proposed that the timing and catches of the fishery should be highly ... reliable data are from seabirds because comprehensive sampling can be carried out during the breeding ... 245,000 tonnes compared with an upper estimate of 550,000 tonnes if less reliable data are included. M ... . hyadesi spawns in winter/spring, probably has a two year life cycle and, in common with other ...

   Meeting Document : WG-FSA-96/20 : Auteur(s): Rodhouse, P.G.

4. Results of the mark–recapture experiment in Subarea 48.3, 2005

   sustainable yield, made adjusting mean recruitment in GYM so that BV2005 corresponded to the current estimates ... from 2004 and 2005 were very similar to each other, whichever selectivity was used: about 62,000 t of ... vulnerable biomass using the Kirkwood shallow selectivity; 52-55,000 t using the CASAL derived selectivity ... functions; and 41,000 t using the tag-derived selectivity function. Current vulnerable biomass (BV2005) was ...

   Meeting Document : WG-FSA-05/17 : Auteur(s): D.J. Agnew and A. Payne (United Kingdom)

5. Fishing for structure; can we describe normal patterns in toothfish fishing operations using catch and effort data?

   they may vary among gear type and other factors that make them useful to understand fishing activities ... some variables; some are explainable while others are obvious errors. We suggest that identifying ... values outside normal maximum ranges can be used to target additional error-checking or seek additional ... more difficult to evaluate given the wide range of influences that may affect recorded values for a ...

   Meeting Document : WG-FSA-16/36 : Auteur(s): J.M. Fenaughty and K. Large

6. ANALYSIS OF ROSS SEA TAGGING AND RECAPTURE RATES

   the same. 3. This method could be used to identify groups of nations that have similar reporting rates ... , recapture year, SSRU, release nation and recapture nation, with 193 recaptures. Despite this size, fishing ... has not been consistent enough between nations to allow the analysis to be definitive. In many cases ... existed, recapture rates were usually highest with New Zealand tagged and recaptured fish, although there ...

   Meeting Document : WG-SAM-08/07 : Auteur(s): D.J. Agnew (UK)

7. CCAMLR tagging program: tag link status update

   with tag numbers but had inconsistent ancillary data. For those tags that did not provide exact or ... exact match with inconsistent ancillary data; and less than 2% could not be successfully linked. An ... returned; 50% provide an exact match with tag numbers held in the database, 22 % provide an exact match ... unique matches only 109 (8%) could not be successfully linked using additional information. For the ...

   Meeting Document : WG-SAM-12/22 : Auteur(s): Secretariat

8. Distribution and abundance of Antarctic krill (Euphausia superba) off East Antarctic (30–80°E) in January–March 2006

   -2. B0 was estimated to be 12.46 million tonnes with a CV of 15.15%. Krill were widely distributed at ... survey and analysis methods for krill. Author(s):  T. Jarvis, N. Kelly, E. van Wijk, S. Kawaguchi and S ...

   Meeting Document : WG-EMM-07/33 : Auteur(s): T. Jarvis, N. Kelly, E. van Wijk, S. Kawaguchi and S. Nicol (Australia)

9. Pairwise tag performance: testing the sensitivity of the tag detection index and the mortality of tagged fish index

   . This recommendation is in accordance with that of most of the participants at WG-SAM 2013 (paragraph ... temporal variability of fishing operations by pairing each individual tag release or recapture event with ... and in the same fishing season). The method showed that when the confounding effects of variable ... with respect to the tag detection index in the Ross Sea region. Here we present the results of ...

   Meeting Document : WG-FSA-13/50 : Auteur(s): S. Mormede (New Zealand)

10. A bioenergetics model assessment of the prey consumption of macaroni penguins in Subarea 48.3

    Subarea 48.3 during the period when penguins are constrained by breeding. We show that the greatest levels ... of consumption occur during incubation and pre-moult, but that there are also evident increases ... towards the end of guard and the end of crèche. Our initial results indicate that levels of krill ... consumption are comparable with some previously reported estimates, but with some important differences. This ...

    Meeting Document : WG-EMM-16/37 : Auteur(s): P.N. Trathan, L. Emmerson, C. Southwell and C. Waluda

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