Результаты поиска

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

   Division 58.5.2. It updates the model used at WG-FSA in 2006 using data from the 2007 season as well as ... 2006 data not available for WG-FSA in 2006. It also includes the following refinements: (i) estimation ... of the coefficient of variation (CV) for length given age, (ii) use of non-informative priors for ... year class strength parameters, (iii) separate selectivity parameters used for the pre-2006 compared to ...

   Meeting Document : WG-FSA-07/53 Rev. 1 : Автор(ы): S.G. Candy and A.J. Constable (Australia)

2. Size at maturity and histological procedures explored to determine spawning activity of female Dissostichus mawsoni from samples collected from the Ross Sea in January 2004, December 2004 and January 2005

   the 2003/04 and 2004/05 commercial fishing seasons in the Ross Sea to improve estimates of size of ... samples of toothfish less than 80 cm and over 120 cm total length were obtained. The first part of the ... study used classic histological techniques to classify ovary stages by the most advanced state of oocyte ... development visible in histological sections of the 2003/04 samples. Using this methodology, it is ...

   Meeting Document : WG-FSA-05/63 : Автор(ы): M.E. Livingston and P. Grimes (New Zealand)

3. Mitigation trials and recommendations to reduce seabird mortality in the pelagic icefish (Champsocephalus gunnari) fishery (Subarea 48.3)

   Abstract:  Trials were conducted during the 2004/5 mackerel icefish (Champsocephalus gunnari ... mitigation methods in an attempt to reduce seabird mortality caused by entanglement with the net and to ... idea of binding the net with sisal string on shooting, in order to prevent it opening until it had sunk ... beneath the sea surface, and thereby reduce the chance of seabirds becoming entangled, while attempting to ...

   Meeting Document : WG-FSA-05/59 : Автор(ы): J.O. Roe (United Kingdom)

4. Further development and progress towards evaluation of an Antarctic toothfish (Dissostichus mawsoni) stock model for the Ross Sea

   Abstract:  This report outlines the development of a Bayesian sex and age structured population ... model for the assessment of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 ... were investigated. The first scenario considered the Ross Sea fishery as a single homogeneous area ... (single-area). The second and third scenarios (2-area and 3-area respectively) split the Ross Sea into ...

   Meeting Document : WG-FSA-SAM-05/12 : Автор(ы): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)

5. Models of tag shedding for double tagging as a function of time at liberty and approximate solutions for the single tagging model in CASAL

   Abstract:  The model of tag shedding implicit in CASAL is that of Kirkwood and Walker (KW) (1984 ... ) which models the annual tag shedding (i.e. loss) rate as a constant for individual tags. The CASAL ... software applies this model correctly for fish released with a single tag but does not have the facility at ... present to correctly apply the KW model for fish released with two tags. The solution of Dunn et al. (2005 ...

   Meeting Document : WG-SAM-11/12 : Автор(ы): S.G. Candy (Australia)

6. DEVELOPMENT OF A REGISTRY OF VULNERABLE MARINE ECOSYSTEMS IN THE CONVENTION AREA

   Abstract:  Conservation Measure (CM) 22-06 requires the Secretariat to maintain an inventory of ... vulnerable marine ecosystems (VMEs) in the Convention Area for circulation to Contracting Parties and other ... relevant bodies. In addition, CM 22-07 requires the Secretariat to notify fishing vessels in the relevant ... fishery and their Flag States of the location of VME risk areas and fine-scale rectangles. The Secretariat ...

   Meeting Document : WG-FSA-09/06 : Автор(ы): Secretariat

7. INCORPORATING SAMPLING VARIATION AND RANDOM READER ERROR INTO CALCULATION OF EFFECTIVE SAMPLE SIZE IN THE APPLICATION OF AGE LENGTH KEYS TO ESTIMATION OF CATCH-AT-AGE PROPORTIONS

   observations that contribute to the objective function via a multinomial likelihood. The multinomial likelihood ... an effective sample size (ESS) that can be used as the nominal multinomial sample size. The method ... accounts for both the variation associated with sub-sampling of the random length frequency (LF) sample for ... ageing, and random reader error when ageing fish. The catch-at-age ESS is estimated by dividing the ESS ...

   Meeting Document : WG-SAM-09/08 : Автор(ы): S.G. Candy (Australia)

8. THE POWER OF ECOSYSTEM MONITORING

   ecosystem monitoring programme, the utility of which depends upon its ability (measured by the statistical ... monitoring programme of the predators of Antarctic krill Euphausia superba at South Georgia together with a ... krill population model to simulate natural and fisheries induced variability in krill abundance, the ... power to detect the effects of different levels of fishing was examined. 3. The power to detect the ...

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

9. Proposal for a SCOR Working Group to identify Ecosystem Essential Ocean Variables for measuring change in the biological properties of marine ecosystems

   for measuring change in the biological properties of marine ecosystems” was developed by members of ... the Southern Ocean Observing System (SOOS) Science Steering Committee in conjuction with discussions ... amongst members of the Science Steering Committee of the IMBER program, Integrating Climate and Ecosystem ... Dynamics (ICED) as part of the development of the ICED Southern Ocean Sentinel.  The aim of the Working ...

   Meeting Document : WG-EMM-12/45 : Автор(ы): A. Constable (Australia)

10. Towards the development of a stock assessment for Patagonian toothfish in Division 58.4.4, SSRU C on Ob and Lena Banks

    Abstract:  Following the advice from the CCAMLR Working Group in WG-SAM in 2012, a preliminary ... -length model. In this preliminary assessment, the model was started in 1990 and catch, proportions at ... length in the catch, and recapture data from SSRU C from 2007/08 to 2011/12 were fitted in the model. The ... suggest suitable fits to the data, however, there appears to be a pattern of increasing YCS over the time ...

    Meeting Document : WG-FSA-12/59 : Автор(ы): K. Taki (Japan)

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