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1. Age, growth and mortality of Patagonian toothfish (Dissostichus eleginoides) caught off Kerguelen

   and is likely to continue to command a high price in world markets. The Convention on the Conservation ... of Antarctic Marine Living Resources is concerned with conserving the Antarctic ecosystem while allowing ... : the mean age of the readings for each section was used as its reference age (Ashford, 2001). Reference ... mean, τi = the effect of the ith level of the factor reading (three levels: reference age and ages ... showed discrepancies due to gear-specific catchability, or differences in the available population with ... Paper Title:  Age, growth and mortality of Patagonian toothfish (Dissostichus eleginoides) caught ... off Kerguelen Abstract / Description:  Ages of Patagonian toothfish (Dissostichus eleginoides) caught ... off Kerguelen in 1999 were estimated by reading transverse-sectioned otoliths. Randomly interspersed ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 29–41 : Author(s): Ashford, J., G. Duhamel, C. Jones and S. Bobko

2. A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels

   for the Conservation of Antarctic Marine Living Resources (CCAMLR) to set the precautionary catch limit for the krill ... To assess the performance of the method, a series of descriptors of swarm structure, including mean volume ... backscattering strength (MVBS, dB re 1 m–1), perimeter, area, mean depth and thick- ness of krill swarms, were ... in Klevjer et al. (2010). Subsequently, a two-sample t-test (hypothesising that the ‘means are equal ... relevant virtual variable operators in the existing acoustic data post-processing software. The utility of ... from Antarctic krill fishing vessels Abstract / Description:  The use of fishing-vessel-based acoustic ... data has been recognised as an important way to estimate the distribution and relative abundance of ... Antarctic krill (Euphausia superba), yet the quality and even the utility of the data may be seriously ...

   Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Author(s): Wang, X., J. Zhang and X. Zhao

3. Midwater trawl catchability as an aspect of a quantitative assessment of krill biomass conducted using a trawl census survey

   is detennined according to mean specific biomass for each stratum. Finally, total krill biomass for the entire ... by the trawl over a standard hauling period; mq - mean catch per standard hauling period T; P - trawl ... of mean catch per standard hauling period T; - relative error in estimate of trawl catchability ... to the accepted confidence probability £ - number of hauls aq,op,ap - mean standard deviations in the catch ... variable which depends on both the behavioural and distributional characteristics of the target species and ... midwater trawls and small research trawls, in this case using an Isaacs-Kidd trawl, demonstrated the ... futility of using the latter for trawl census survey biomass assessments due to their highly variable ... can facilitate selecting the optimal construction of commercial midwater trawls. Assessments of the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 257–272 : Author(s): Kasatkina, S.M.

4. Homogeneity of Adélie penguins as krill samplers

   that it is possible to obtain estimators for mean lengths from samples obtained from a patchy distribution ... of krill measure (Level 0). Table 1 shows the date of sampling, mean length, variance and number ... increased, until it became significantly different from zero for C = 2.83 mm, equivalent to 7% of the mean ... to be eating similar sized krill. Mean lengths derived from stomach contents of penguins are formally ... penguins in the length of krill eaten, using data from Esperanza Bay. The variance component-0.26 was not ... penguins to estimate parameters of the prey population without discriminating by sex, weight or other ... Paper Title:  Homogeneity of Adélie penguins as krill samplers Abstract / Description:  A nested ... ANOVA design was used to measure the variance component due to differences between individual Adélie ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 253–257 : Author(s): Marschoff, E. and B. Gonzalez

5. From the Editor

   for that region (Conservation Measure 51-01 (2007)) (CCAMLR, 2007). CCAMLR. 2007. Schedule of Conservation ... Paper Title:  From the Editor File:  12editor.pdf ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 199

6. Target strengths of Antarctic krill (Euphausia superba)

   :  The Mean Volume Backscattering Strength of encaged aggregations of swimming krill have been measured at 38 ... The Mean Volume Backscattering Strength of encaged aggregations of swimming krill have been ... (EUPHAUSIA SUPERBA) I. Everson, D.G. Bone, J.L. Watkins and K.G. Foote Abstract The Mean Volume ... , respectively. The cumulative numbers were divided by the interval duration and presented as "mean volume ... a ready means of monitoring the equipment performance. 4.4 Empty Cage and Volume Reverberation ... from the OD echo integrator data, the "mean volume backscattering strengths" had to be reduced ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 265–279 : Author(s): Everson, I., D.G. Bone, J.L. Watkins and K.G. Foote

7. Integrating Count Effort by Seasonally Correcting Animal Population Estimates (ICESCAPE): a method for estimating abundance and its uncertainty from count data using Adélie penguins as a case study

   for eStImatIng abundanCe and ItS unCertaInty from Count data uSIng adélIe PenguInS aS a CaSe Study J. McKinlay ... with mean equal to the predicted value for that date and standard deviation equal to the standard error ... repeatability of 1.4%, and, to be conservative, that the counts were made some time from 20 to 24 January 1979 ... estimates with mean 43 833, median 42 610, and 95% confidence interval by the percentile method of 19 220 ... reported measures of uncertainty associated with originally published counts are propagated through to the ... , the method is applied to several examples of published studies of Adélie penguin abundance at breeding ... sites in Antarctica. These examples focus on adjusting counts of adults to an effective number of ... breeding pairs, although the software has been developed to accommodate adjustment and aggregation of other ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 213–227 : Author(s): McKinlay, J., C. Southwell and R. Trebilco

8. Status of krill target strength

   is the following. The quantities of target strength, back scattering cross section, and mean volume backscattering ... of the mean volume back scattering strength are summarised, and a theoretical model for krill scattering ... . The mean volume backscattering coefficient Sv is related to the mean backscattering cross section ... is the mean volume backscattering strength. This or similar volume scattering quantities are typically what ... Paper Title:  Status of krill target strength Abstract / Description:  Empirical estimates for the ... aggregations of live euphausiids and should not be affected by a frequent cause of bias in single-animal ... is an empirical basis. The theoretical estimates show a non-monotonic dependence of target strength ... recommendations are made for future, improved determinations of krill target strength. Based on the comparisons ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 101–126 : Author(s): Foote, K.G., D. Chu and T.K. Stanton

9. Erratum and Addendum - Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects – CCAMLR Science, 11: 59–80 (2004)

   models, the Tweedie distribution, random vessel effects and random stratum-by-year effects – CCAMLR ... = rather than excluding the whole second term in each of equations (7) and (9). Re-definitions of ... of the variance func- tion power parameter, λ, should be 1.4 rather than the 1.3 value given in ... ) more accurately recovered the value of λ used in CCAMLR Science, Vol. 16 (2009): 221–222 221 ... Erratum For the GLMM the ‘effective degrees of ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 221–222 : Author(s): Candy, S.G

10. Acoustic estimates of krill density at South Georgia, 1981 to 1998

    ecosystem (reviewed by Brierley et al., 1997a). Acoustic survey techniques are now the favoured means ... acoustic surveys of krill density at South Georgia, 1981 to 1998, and estimates of weighted mean krill ... few krill caught, TS for this year was taken as the mean value expected for krill spanning the size ... transects would yield a mean density estimate falling within the 95% confidence limits of the mean arising ... % confidence limits <15 g m-2). For five of the summers between 1990 and 1998 it was possible to calculate ... separate density estimates for northeastern and northwestern South Georgia, and in four of these seasons ... Paper Title:  Acoustic estimates of krill density at South Georgia, 1981 to 1998 Abstract ... / Description:  Acoustic estimates of densities of Antarctic krill, Euphausia superba, at South Georgia during ...

    Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 47–57 : Author(s): Brierley, A.S., J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson

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