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1. Fishery Report: Dissostichus eleginoides (TOP) Crozet Island inside the French EEZ (Subarea 58.6)

   undertaken. 5.3 Mitigation measures 14. The Working Group recommended that areas with high by-catch ... rates should be avoided and noted that from 2012 vessels have received a recommendation to avoid the ... measures that were put in place during the last three seasons will be continued for 2013, however, new ... vessels with high by-catch (iv) data will continue to be collected and submitted using CCAMLR standard ...

   Document : Site Section: Publications

2. Review of the use of survey data and length-at-age models in the assessment of Dissostichus eleginoides in the vicinity of Heard Island and McDonald Islands (Division 58.5.2)

   estimates of length density, we suggest that best estimates of cohort abundance will be achieved when ... estimates were found to be most sensitive to the estimated recruitment series interacting with the estimate ... assignment of survey data to the 2003 stratification along with the latest estimates of length at age. The ... cohorts assumed to be represented in the length density data. Assuming survey design produces unbiased ...

   Meeting Document : WG-FSA-SAM-06/15 : Auteur(s): D.C. Welsford, A.J. Constable and G.B. Nowara (Australia)

3. Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors

   censuses on the Antarctic Peninsula are often subject to logistical challenges that preclude nest counts ... counts with non-standard timing. The challenge is, therefore, to correct ‘off-peak’ census counts to make ... them comparable with current standard methods. Census correction involves knowing (i) how the census is ... , sea-ice etc.). It is found that mean October temperatures constitute the most consistent significant ... applicable to data that may have errors in the timing of censuses that must be accounted for along with ... full inte- gration of census estimates that may be historical (e.g. from the early Antarctic ... count that could be obtained in any given year are not strictly coin- cident, and the maximum census ... that mean October temperature is the covariate most consistently correlated with mean CID, and is sig ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Auteur(s): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece

4. A spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region

   to date. We propose that the modelling platform presented here can be used to test the likelihood and ... compare with previous models where the stock was either restricted to the fished cells only (65 cells ... the one that restricts toothfish distribution to depths which are known to provide suitable toothfish ... about the distribution of toothfish in areas where no fishing has occurred, such that the unrestricted ...

   Meeting Document : WG-FSA-13/53 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

5. Estimates of the tag loss rates for single and double tagged toothfish (Dissostichus mawsoni) fishery in the Ross Sea

   plausible that there could be a catastrophic failure of tags or some other systematic change in the tag loss ... and subsequently recaptured fish suggested that the loss rate was about 3.5% (95% C.I.s 0.020–0.054 ... models suggested that there was evidence of immediate failure of tags (α = 0.035) and an ongoing constant ... applied in the assessment models of Dunn & Hanchet (2009a, 2009b), with the loss rates slightly over ...

   Meeting Document : WG-SAM-11/18 : Auteur(s): A. Dunn, M.H. Smith (New Zealand), D.J. Agnew (UK) and S. Mormede (New Zealand)

6. Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) biomass

   various definitions of strata. The total biomass in the area of 155 786 km2 was estimated to be 1.8225 x ... 106 t (Coefficient of Variation = 9.5%). This gives an estimate of mean density throughout the region ... of 11.7 t km-2. Although the estimate of the mean is not sensitive to the definition of strata, the ...

   Meeting Document : WG-KRILL-91/30 : Auteur(s): E. Murphy, I. Everson and A. Murray (United Kingdom)

7. IN SITU MEASUREMENTS OF TILT ANGLE DISTRIBUTION AND TARGET STRENGTH IN ANTARCTIC KRILL (EUPHAUSIA SUPERBA)

   data acquired. The post-processing and analyses are ongoing and the results from this work will be ... presented in future reports. Author(s):  G. Skaret, S.A. Iversen, T. Knutsen, R.J. Korneliussen, E. Ona, R ... . Pedersen, A. Totland, T. Torkelsen (Norway) and X. Zhao (China) Title:  IN SITU MEASUREMENTS OF TILT ANGLE ...

   Meeting Document : WG-EMM-08/29 : Auteur(s): G. Skaret, S.A. Iversen, T. Knutsen, R.J. Korneliussen, E. Ona, R. Pedersen, A. Totland, T. Torkelsen (Norway) and X. Zhao (China)

8. The Ross Sea toothfish fishery: proposal for conditional transition of classification from exploratory to established

   uncertainties with aspects of the stock, we propose that the stock is sufficiently well understood and assessed ... that it should be re-classified.  To ensure that sufficient data are acquired to continue assessment of ... ’ has led to the widespread misconception that little information is available for this stock, and that ... be undertaken.  In fact, many biological characteristics of D. mawsoni are now well understood, and ...

   Meeting Document : WG-FSA-11/32 : Auteur(s): C. Jones (USA) and S. Hanchet (New Zealand)

9. Rossii revisited: new information on the early history of the fishery for Notothenia rossii in Subarea 48.3

   unrealistic stock history considering that this stock was the first to be exploited in the Antarctic. A VPA ... gunnari, rather than N. rossii, and that 25% of the catch in 1969 was also C. gunnari. A VPA run with ... Abstract:  New catch data reported to CCAMLR indicate that Notothenia rossii was heavily exploited ... using the new data suggests that unexploited biomass was over 900 000 tonnes, and declined in a manner ...

   Meeting Document : WG-FSA-95/17 : Auteur(s): Agnew, D.J.

10. Trawl survey of the Patagonian toothfish (Dissostichus eleginoides) resource off the Prince Edward Islands

    around the Prince Edward Islands in April 2001. Due to the paucity of bathymetric data, it was not ... aid in the design of such surveys should they be deemed practical. The maximum operating depth for the ... be surveyed by bottom trawl. The small area above the 1 500m isobath is scattered over 28 hills and ...

    Meeting Document : WG-FSA-01/72 : Auteur(s): R.W. Leslie and B.P. Watkins (South Africa)

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