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1. 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

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. 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)

4. 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))

5. Outline of a research program to investigate the abundance, abundance trends and stock structure of large whales in the Indo-Pacific region of the Antarctic, including a survey plan for the 2019/20 austral summer season

   Method, to be conducted alternatively in IWC Areas III, IV, V and VI by one or two specialized vessels ... utilizing the Line Transect Method, to be conducted alternatively in IWC Areas III, IV, V and VI by one ... or two specialized vessels, during a tentative period of eight austral summer seasons. Analyses related ... will be based on large and consistent data sets. The survey plan for the 2019/20 austral summer season ...

   Meeting Document : WG-EMM-2019/68 : Author(s): Delegation of Japan

6. 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)

7. Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1994 winter and 1994/95 pup-rearing season

   , but two-thirds of the value recorded in 1990 and 1992. The proportion of entangled animals showing severe ... . The proportion of adult animals affected (20%) was slightly lower than 1994. The proportion of females involved ... (40%) was 26% less than the previous year. The incidence of severe injury (30%) was 46% less than ... , but two-thirds of the value recorded in 1990 and 1992. The proportion of entangled animals showing severe ...

   Meeting Document : SC-CAMLR-XIV/BG/08 : Author(s): Delegation of the United Kingdom

8. 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

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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