Résultats de la recherche

1. Bibliothèque de référence des engins de pêche

   public domain with the permissions of the authors. Contributions to this library may be emailed to the ... WG-FSA-06/5 (830.06 KB), extract from WG-FSA-11/53 (330.28 KB), Insung No. 3 (1.75 MB) Trotline ... report, Figure 5 (97.56 KB), Insung No. 3 (1.75 MB) Impact on VMEs Impact assessment framework WG-SAM-10 ...

   Page : Site Section: Publications

2. ASSESSMENT OF PATAGONIAN TOOTHFISH POPULATION IN THE NORTH OF SUBAREA 48.4 USING DATA FROM A FOUR-YEAR TAGGING EXPERIMENT

   early closure of the fishery with only 58.9 t of the 75 t TAC of D. eleginoides taken; 2. The target ... tagging rate of 5 fish per tonne was exceeded by both vessels, with 344 D. eleginoides tagged and released ... cohort spawned in the early-1990s and that growth parameters are similar for D. eleginoides caught in ... 48.4 and 48.3. 8. CASAL estimates of D. eleginoides population size in the North of 48.4 agree with ...

   Meeting Document : WG-FSA-09/17 : Auteur(s): J. Roberts and D.J. Agnew (United Kingdom)

3. 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

   SSB0 and SSB status in the assessment year stabilized or were relatively small with a tag size-overlap ... and the resulting data should not be used in stock assessments with only few years of data available ... estimates from an integrated tag-based assessment are influenced by various aspects of a multi-year tagging ... . Biomass estimates generally improved with more and better quality tagging data, however important nuances ...

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

4. Intra-annual variability in the density of Antarctic krill (Euphausia superba) at South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ‘annual’ estimates of krill density

   estimates with the observed pattern of within-year variability showed that some of the apparent ‘year-to ... the regression-predicted within-year variation. Years that stand out for markedly low krill density ... South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ... g m –2, SD = 24.3), but had risen substantially by summer in each year (mean = 89.5 g m –2, SD ... detected high within-year varia- tion in krill density, and a sinusoidal regression model, with time as ... region. Comparison of pre- vious acoustic survey estimates with the observed pattern of within-year ... resident krill population, but were consistent with the notion of large infl uxes of krill in early summer ... estimate with an upper 95% confi dence limit of less than 15 g m–2 is indicative of a ‘low’ krill year ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 27–41 : Auteur(s): Saunders, R.A., A.S. Brierley, J.L. Watkins, K. Reid, E.J. Murphy, P. Enderlein and D.G. Bone

5. An 8-year cycle in krill biomass density inferred from acoustic surveys conducted in the vicinity of the South Shetland Islands during the austral summers of 1991/1992 through 2001/2002

   years and indications that ice cover in the winter of 2002 is seasonally early and extensive. Author(s ... , comparisons with the proportion of juvenile krill in simultaneous net samples suggest that the changes in ... biomass density are consistent with apparent changes in reproductive success. A truncated Fourier series ... fit to the biomass density time series is dominated by an 8-year cycle and predicts an increase in ...

   Meeting Document : WG-EMM-03/6 : Auteur(s): R.P. Hewitt, D.A. Demer and J.H. Emery (USA)

6. Intra-annual variability in the abundance of Antarctic krill (Euphausia superba) at South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ‘annual’ krill density estimates

   survey estimates with the observed pattern of within-year variability showed that some of the alleged ... winter were predominantly low (mean = 18.7 g m-2 SD 24.3) but rose substantially by summer in each year ... (mean = 89.5 g m-2 SD 64.2). A simple polynomial regression model with time as the independent variable ... . within-year) could have led to the perceived between-year variation from previous summer surveys in the ...

   Meeting Document : WG-EMM-06/25 : Auteur(s): R.A. Saunders, J.L. Watkins, K. Reid, E.J. Murphy, P. Enderlein, D.G. Bone and A.S. Brierley (United Kingdom)

7. Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects

   distribution, random vessel effects and random stratum-by-year effects Abstract / Description:  The current ... generalised linear model (GLM) with a square-root link function and a unit variance function. A time series of ... standardised CPUE estimates and their precision can be obtained from the ‘fishing year’ parameter estimates ... together with ‘baseline’ parameter estimates, their variance–covariance matrix, and the inverse-link ... early years of the fi shery and the effect this can have on ‘treatment’ (i.e. YEAR) fi xed-effect ... number of year classes, each with a different weight distribu- tion. Also, number of fi sh caught may be ... the national- ity fi xed-effect term redundant), two vessels were completely confounded with YEAR ... 9 is that there was an increase in CPUE in the second year of the trawl fi shery, with a sharp ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Auteur(s): Candy, S.G

8. A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region incorporating multi-year mark-recapture data

   of tagged fish and subsequent multi-year data of recapture of tagged fish in conjunction with fishery ... Sea Region incorporating multi-year mark-recapture data Abstract / Description:  An exploratory ... hence a multi-year mark-recapture tagging program was initiated by New Zealand fishing vessels in 2001 ... model was developed for Antarctic toothfish in the Ross Sea region that incorporates multi-year release ... subsequent multi-year data of recapture of tagged fish in conjunction with fishery catch-at-age data. This ... with a very high YCS in the final year, regardless of the time period over which YCS were estimated ... explora- tory fishery demonstrates the value of the multi- year tagging programs even with low recapture ... . Between 2 000 and 3 800 toothfish have been tagged and released in the RSR each year since 2004. The ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 39–62 : Auteur(s): Mormede, S., A. Dunn and S.M. Hanchet

9. Report on the first year’s fishing under New Zealand’s exploratory fishery for toothfish within the SPRFMO Convention Area

   advise the SPRFMO Commission meeting in early 2017 on progress with the exploratory fishery.   Author(s ...

   Meeting Document : SC-CAMLR-XXXV/BG/32 : Auteur(s): J. Fenaughty and M. Cryer

10. Summary of a three year mark-recapture experiment to estimate population size of Antarctic toothfish (Dissostichus mawsoni) in Southern Area of Statistical Subarea 48.4

    Abstract:  A three-year tagging experiment was initiated by the UK in 2008/09 fishing season with ... decline in catch rates over the three year study, more so between 2010 and 2011. A total of 476 D. mawsoni ... :  Summary of a three year mark-recapture experiment to estimate population size of Antarctic toothfish ... indicated that mean estimates of vulnerable biomass for D. mawsoni were similar across recapture years 2010 ...

    Meeting Document : WG-FSA-11/31 Rev. 2 : Auteur(s): R.C. Wakeford, J. Roberts and R.E. Mitchell (United Kingdom)

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