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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

   model in predicting class/bin by year frequencies is used to obtain a single, across-years, over ... random variation across years in one of the selectivity function parameters and similarly for the ... year is important for such assessments, and this issue is studied using simulation. Between-haul ... heterogeneity within fishing year was simulated using samples from the Dirichlet-multinomial (D-M) distribution ... model A simulation model consisted of simulating 100 replications of a series of 20 fishing years of ... sampling of the population age structure. For each of the 20 years in a replicate, catch-at- age ... about a mean of 100 000 with CV (cR) of 0.6 with an initialisation period of 50 years (i.e. the 20 ... centred year value obtained from the integer values of year, y, so that for a 20-year simulation period ...

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

2. Defining smaller-scale management units to further develop the ecosystem approach in managing large-scale pelagic krill fisheries in Antarctica

   explored in terms of the structure of animal populations. A group of animals that are continuously ... , although they have been important in some years since then. In this analysis, Elephant Island appears ... . Parkes. 1998. Analysis of haul data from the South Georgia krill fi shery. CCAMLR Science, 5: 9–30 ... ) between the 1988 and 2000 split-years in each fi ne-scale area (0.5° latitude x 1° longitude) in the ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Autor(es): Constable, A.J. and S. Nicol

3. A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age data and compared to observed growth from mark–recapture studies

   -estimated parameters. A young-age adjustment (less than 5 years old) to the VB model is also given in order ... – 20 year range. This translated to larger predictions for the MLPLB-fi tted curve for ages below 5 ... than 5 years old) to the VB model is also given in order to give more realistic predictions of mean ... after 175 days and 270 before 20 days at liberty. The median value of days-at-liberty was 163. Only ... (Pop) = μ(A, θ) + ε where L is length (mm), A is age (years), θ = (L∞, κ, t0) are the VB parameters ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Autor(es): Candy, S.G., A.J. Constable, T. Lamb and R. Williams

4. Directed research. Antarctic Marine Living Resources (AMLR). A program development plan

   . In the 50 years between 1930 and 1980 the populations of blue, fin, sei, and humpback whales are ... , 1986. File:  20-USA.pdf ... research vessel capable of operating in Antarctic waters for a period of 180 days each year. Note: The full ... fleets has already contributed to the overexploitation of Antarctic fish stocks. In the 50 years ... ) developpera et mettra en vigueur. le Programme AMLR qui met l' accent sur la recherche dirigee entreprise ... of 180 days each year. Note The full text of this paper was published under the above title by ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 363-373 : Autor(es): Office of Science and Technology, NMFS, NOAA, US Department of Commerce (USA)

5. The status of krill (Euphausia superba DANA) resources in CCAMLR Statistical Divisions 58.4.2 and 58.4.3 from 1988 to 1990. Results of acoustic surveys

   abundant 1986 and 1987 year-classes and with a diminished rate of emigration of krill of these year-classes ... particular, in the southern coastal waters of the area (south of 65°30'S). Until 1988 krill biomass was ... opening and a Samyshev-Yevdokomov scientific trawl with a 30 sq. m opening. Trawling speed was 2.5 to 3.0 ... length were observed over the continental slope between 61 ° and 62°30'E. Daily catches by scientific ... and 15 m deep were most frequent. Dispersed concentrations up to 20 miles in length were also ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 163–173 : Autor(es): Bibik, V.A. and V.N. Yakovlev

6. Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica

   mature at about 340–360 mm total length (TL) and about 3–4 years of age, and that 95% were mature at ... about 370–400 mm TL and 6–8 years of age. Counts of growth zones in sectioned otoliths were used to ... approached a significantly larger mean asymptotic maximum size than males. Maximum ages of 8 and 11 years ... total length (TL) and about 3–4 years of age, and that 95% were mature at about 370–400 mm TL and 6–8 ... years of age. Counts of growth zones in sectioned otoliths were used to determine ages and von ... larger mean asymptotic maximum size than males. Maximum ages of 8 and 11 years were obtained for male ... 340–360 mm TL and 3–4 years of age, while 95% are mature at 370–400 mm TL and 6–8 years of age ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 139–165 : Autor(es): Sutton, C.P., M.J. Manning, D.W. Stevens and P.M. Marriott

7. Towards the development of a management plan for mackerel icefish (Champsocephalus gunnari) in Subarea 48.3

   years of poor krill availability. Thus natural  ortality of C. gunnari may, in some years, increase by a ... assumed to be independent between years and equally likely to occur in each year. Results of a number of ... : Probability of stock biomass dropping below 20% of the unexploited median level over a 10-year period ... -year projection period, in only one-third of these was the spawning stock level less than 20% of the ... rates. These may be associated with increased consumption of C. gunnari by Antarctic fur seals in years ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 63–77 : Autor(es): Agnew, D.J., I. Everson, G.P. Kirkwood and G.B. Parkes

8. Australian research on Antarctic bird and seal diets

   Heard and Macquarie Islands have been collected during the last seven years. Published and unpublished ... ) 20 38 3' 1 58 400 39 29 32 o Location: Sea ice off Davis Station (68°30'S: 77°50'E ... the last seven years. Published and unpublished results are collated and summarised, and several ... Davis Station (68°30'S:77°50'E), in the south-eastern corner of the Prydz Bay Priority Area of CEMP ... from these studies. 2. SUMMARY OF FINDINGS 2.1 Adelie Penguin Location: Davis Station (68°30'S ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 231-249 : Autor(es): Williams, R.

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

   swann depth (metres) 42 29 41 24 29 25 30 21 cr, swann depth 13 20 13 8 10 14 16 8 Mean swann ... 47 59 30 23 20 29 17 cr, mean swann length (metres) 15 16 19 7 10 7 20 4 Swann density field in ... by a trawl bag of 20 mm twine. This protects the trawl bag from mechanical damage. Features of ... catchability no less than ~ x(P) = 0.1, it would be necessary to carry out over the study area 20 hauls with a ...

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

10. Fish distribution and biomass in the Heard Island zone (Division 58.5.2)

    distribution, abundance and biology of the most important species, covering a number of years and seasons. Five ... gunnari, but total abundance varied greatly between years. Channichthys rhinoceratus has a similar ... CCAMLR Science, Vol. 2 (1995): 1-20 FISH DISTRIBUTION ... of the most important species, covering a number of years and seasons. Five species were found to be ... varied greatly between years. Channichthys rhinoceratus has a similar distribution, but abundance is ... and biology of the most important species, covering a number of years and seasons. This paper ...

    Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 1–20 : Autor(es): Williams, R. and W.K. de la Mare

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