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1. Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2018 – Reflection on the recommendations by WG-EMM-17 and SC-CAMLR-XXXVI

   raised at WG-EMM-17 and SC-CAMLR-XXXVI (SC-CAMLR-XXXVI, Annex 6, §§ 5.1-5.14). The implementation ... of recommendations and questions raised by WG-EMM-17 and SC-CAMLR-XXXVI was already presented at the Workshop ... of Spatial Management (Cambridge, UK, 2 to 6 July 2018), where the great amount of work was acknowledge ... document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2018 ...

   Meeting Document : SC-CAMLR-XXXVII/BG/15 : Author(s): Delegation of Germany

2. Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data

   Bayesian model. The models were composed of multistage cluster units (i.e. year, subarea, vessel, cruise ... estimated by the Markov chain Monte Carlo (MCMC) method hardly show difference among years, subareas ... and vessels. The potent interaction effect between year and subarea suggests large spatio–temporal variability ... units (i.e. year, subarea, vessel, cruise and haul) based on a state–space model, separating ... during one cruise (usually 70–80 days), 5–10% haul coverage level for the Japanese krill fishery may ... an on-board scientific observer on all vessels on at least one cruise each year, and (iii) recognise ... . In this period, the Japanese krill fishing fleet was com- posed of one to four conventional trawl vessels ... ), krill populations consist of multiple cohorts, but it is difficult to estimate age structure by using ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Author(s): Okuda, T. and M. Kiyota

3. Validation of age determination in Notothenia coriiceps, by means of a tag-recapture experiment at potter cover, South Shetland Islands

   and after the period of liberty. In scales of those specimens recovered after 11-13 months, one extra ... annulus was laid down. The same analysis in one individual recovered after 21 months resulted in 2 extra ... (s):  E.R. Barrera-Oro and R.J. Casaux (Argentina) Title:  Validation of age determination in Notothenia ... . In scales of those specimens recovered after 11-13 months, one extra annulus was laid down. The same ...

   Meeting Document : WG-FSA-94/12 : Author(s): E.R. Barrera-Oro and R.J. Casaux (Argentina)

4. DEVELOPMENT OF A METHODOLOGY FOR DATA QUALITY ASSESSMENT

   analyses suggests two groups of trips, one of which can tentatively be considered to have better data. Tags ... groups of trips, one of which can tentatively be considered to have better data. Tags released by trips ... 's Law for the distribution of the first significant digit, whether length-frequency data have been ... sets from different trips in the Ross Sea Antarctic toothfish fishery. Cluster analyses suggests two ...

   Meeting Document : WG-SAM-08/13 : Author(s): D.A.J. Middleton and A. Dunn (New Zealand)

5. Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution

   variation across years in one of the selectivity function parameters and similarly for the mortality rate ... of the age-structured model in predicting class/bin by year frequencies is used to obtain a single, across ... systematic or random variation across years in one of the selectivity function parameters and similarly ... Paper Title:  Estimation of effective sample size for catch-at-age and catch-at-length data using ... from simu- lated sampling of the population age structure. For each of the 20 years in a replicate ... , the lack of fit of the age- structured model in predicting class/bin by year frequencies is used to obtain ... . These perturbations consisted of either systematic or random variation across years in one of the selectivity ... vessel and year. Further, CASAL requires the catch-at-age or catch-at-length data to be input ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Author(s): Candy, S.G

6. Size and density of krill layers fished by a Japanese trawler in the waters north of Livingston Island in January 1988

   The number of aggregations per tow were: one (30 instances); two (one instance); three (two instances ... ); and six (one instance). All the aggregations were layers except the last instance where six swarms were ... are fished per haul in his modified simulation model. In this study, however, one layer was fished per haul ... selecting larger aggregations than the average-sized ones found by research vessels. Towed length ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 339–345 : Author(s): Endo, Y. and Y. Shimadzu

7. Distribution and ecology of Chaenocephalus aceratus (Channichthyidae) around South Georgia and Shag Rocks (Southern Ocean).

   Abstract:  Chaenocephalus aceratus (Family Channicthyidae) is one of the dominant species ... Chaenocephalus aceratus (Family Channicthyidae) is one of the dominant species of demersal fish ... that growth was fast in the first five years with males and females attaining lengths at first spawning of 440 ... Biol., 30 (12): 1523–1533 (2007)) Title:  Distribution and ecology of Chaenocephalus aceratus ...

   Meeting Document : WG-FSA-07/P5 : Author(s): W.D.K Reid, S. Clarke, M.A. Collins and M. Belchier. (Polar Biol., 30 (12): 1523–1533 (2007))

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

   at least one tag remaining after one year at liberty; 98.9% after two years at liberty; declining to 94.6 ... one tag remaining after one year at liberty; 98.9% after two years at liberty; declining to 94.6 ... tags were lost almost immediately, and then there was an ongoing rate of about 0.039 (95% C.I.s 0.027 ... –0.052) tags per year. For double tagged fish this corresponds to 99.5% of double tagged fish having ...

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

9. Fishery Report: Champsocephalus gunnari Heard Island (Division 58.5.2)

   . To achieve this, the one-sided lower 95% confidence bound of the biomass estimate for 1+, 2+ and 3+ age ... were present in ages 1+- 5+. Unusually for this stock, 4 or 5 consecutive year classes are present ... = 20 April 2011. Stratum Estimate SE Lower CI Upper CI One-sided lower 95% CI Gunnari Ridge 169.3 ... in Division 58.5.2. Category Parameter Values Age structure Plus class accumulation 10 years Oldest age ...

   Document : Site Section: Publications

10. Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea

    that considerable refi nement of these estimates is possible. Qualitative conclusions are that: under the fi rst two ... in some of its traditional fishing grounds during years of low krill availability. Under all five options ... . Qualitative conclusions are that: under the fi rst two options a substantial portion (>65%) of the catch ... years of low krill availability. Under all five options there would be little effect on the existing ... h O rk ne y P el ag ic A re a (S O P A ) 0. 00 64 20 0. 02 07 66 0. 29 85 94 ... -pelagic SSMUs during at least one- third of the years. This would not, however, affect the allocation ... Fi gu re 1 : Sm al l- sc al e m an ag em en t un it s (S SM U s) in S ub ar ea ... d in g th e ar ch ip el ag os in t he S co ti a Se a. S SM U s ar e: ( 1) A nt ar ct ...

    Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Author(s): Hewitt, R.P., G. Watters, P.N. Trathan, J.P. Croxall, M.E. Goebel, D. Ramm, K. Reid, W.Z. Trivelpiece and J.L. Watkins

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