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1. Statistical problems in krill stock hydroacoustic assessments

   issue of patchy years vs more even distribution would seem to have more impact on ecosystem management ... biomass present in an area, but rather how it is distributed. The issue of patchy years vs more even ... the target strength employed is later refined or revised, these acoustic estimates may be corrected ... be in conflict with optimum distribution of effort for statistical sampling methods. Zooplankton ... and nekton populations are seldom, if ever, random in their distribution with respect to the sampling ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Autor(es): Macaulay, M.C.

2. Statistical power to detect changes in growth rates of Antarctic fur seal pups

   changes (between years) in pup growth rates, the loss of power associated with obtaining weight samples on ... detect a 17% change in the growth rate with a 10% chance of committing Type 1 or Type 2 errors. If only ... for each year and as weighted averages of both years. Growth Rate Standard Error (kg/d) of Growth ... Numerical simulations were used to investigate the power of methods for detecting changes (between years ... ) in pup growth rates, the loss of power associated with obtaining weight samples on only three dates ... % change in the growth rate with a 10% chance of committing Type 1 or Type 2 errors. If only three samples ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 399–409 : Autor(es): Boveng, P., J.L. Bengtson and M.E. Goebel

3. Modelling variability and estimating power to detect change in Adélie penguin fledgling weights

   year, but there was no evidence that the rate of decline differed between years. A consequence of this ... statistical models were developed from first principles and incorporated both within- and between-year ... at a single time each year, without substantial loss of power to detect change. Further modelling ... from year to year is evident, with the 1996/97 and 1998/99 years recording lower average weights than ... 100), duration of post-impact monitoring (3, 4 and 5 years), and percentage change in weight ... % change (377 g) with only three years of post-impact monitoring and the limited gain from weighing more ... percentage change detectable with power 0.8 or greater is reduced. For example, after five years of ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Autor(es): Emmerson, L.M., C. Southwell and J. Clarke

4. Revised estimates of seabed areas within the 500 m isobath of the South Orkney Islands (subarea 48.2) and consequences for standing stock biomass estimates of nine species of finfish

   ~ ~ 11306aTb1 ( ~ . e . 0-500 M) PaCCYHTbIBanACb no HHTerPHPOBaHHbIM 6 a 3 a ~ AaHHbIX An2 50-M~TPOB~IX ... Science Foundation Rice University Scripps Institute of Oceanography S ain $3 Defense Mapping Agency ... strata. Number of Surveys 1 3 14 3 na 1 1 1 2 na 1 na 1 2 Stratum (m) Land masses ... , Chionodraco rastrospinosus and Lepidonotothen squamifrons. Estimates of standing stock biomass, along with ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 197–204 : Autor(es): C.D. Jones

5. Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea 48.2) during 1989/90

   statistics from the Soviet krill fishing fleet during the 1989/90 season (sample of 3 614 hauls for the ... fishing ground off the northwestern tip of Coronation Island. CPUE showed variability with a minimum in ... hydrodynamic characteristics of the area, for example a complex current around the islands together with ... north-east of the region. The fleet was observed drifting with the current together with krill ... , 1 518 (42%) by BMRT vessels with an engine of 3 000-3 100 hp and 564 (15.6%) by BMRT vessels with ... statistics from the Soviet krill fishing fleet during the 1989/90 season (sample of 3 614 hauls for the ... one fishing ground off the northwestern tip of Coronation Island. CPUE showed variability with a ... islands together with topographically-induced effects. Except in November 1989, temporally and spatially ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 51–62 : Autor(es): Sushin, V.A

6. The 1991/92 fishery for Dissostichus eleginoides in Subarea 48.3

   November 1991 to 10 March 1992. A total of 3 382 tonnes was taken by one Bulgarian, five Russian and eight ... Dissostichus eleginoides opened on 4 November 1992 with a TAC of 3 500 tonnes, and was closed on 10 March 1992 ... I - hooks with parallel sides and in a single plane ("parallel, flat") [Mustad sizes 3 and 5; width ... ) which seemed to improve its performance later in the year. CPUE Daily CPUE, expressed as kg/thousand ... Dissostichus eleginoides in Subarea 48.3 was open from 4 November 1991 to 10 March 1992. A total of 3 382 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 31–48 : Autor(es): Agnew, D.J. and C.A. Moreno

7. Management and uncertainty: the example of South Georgia

   :  Decisions on fishery management are often made with some degree of uncertainty in scientific advice. Such ... comparison of the immediate and long-term effects of any one proposed measure with those of any other measure ... (including the effects of doing nothing) could provide a procedure for providing advice that could cope with ... , and the small numbers from the 1966 to 1969 year-classes observed in later years would not be ... could say with absolute certainty that a complete closure for x years would rebuild the stocks to a ... present M=O.ll, F=0.65. Annual recruitment, as numbers at 3 years old, has fallen from some 20 ... recruitment is due directly to fishing, with the very low recruitment in the most recent years being due ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 341-353 : Autor(es): Gulland, J.A.

8. The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model

   : a multiplier with range (0,1) of the ‘movement linear’ movement matrices (Tables 3 and 4 in Hill ... several years but man- agement reference points exist only for the target stock and not for its predators ... years. The current description uses the notation 1970(1) refers to the combination of year (1970) and ... and 3 matrices). In the 15 SSMU–four predator configuration developed by Watters et al. (2013), it ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Autor(es): Hill, S.L. and J. Matthews

9. Can we use discriminant function analysis to sex penguins prior to calculating an index of a morphometric characteristic?

   birds with greater than 80% success, the difference between the true and apparent mean is likely to be ... discriminant function with greater than 80% success may be used to derive statistically robust estimates of ... Type I and Type II errors. Lack of knowledge about the sex ratio between years makes combining the data ... discriminant functions are able to correctly determine the sex of birds with greater than 80% success, the ... sampled. Therefore, under most normal sampling regimes a discriminant function with greater than 80 ... knowledge about the sex ratio between years makes combining the data a very doubtful procedure and use of a ... birds. Concern was expressed that it may be necessary to know the sex of birds with absolute accuracy ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 259–272 : Autor(es): Agnew, D.J.

10. Champsocephalus gunnari stock status in the South Georgia area

    and TAC for C. gunnari. Stock estimates were obtained using VPA with the following variations: mean F ... prediction the stock size value was obtained by VPA with variations using F regression methods. The ... recruitment was taken at the lowest possible level for all these years (400 million specimens). Catch-per-unit ... Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table Legends Age (years) and weight (gr ... were obtained using VPA with the following variations: mean F, Gamma methods, Pope and Shepherd method ... obtained by VPA with variations using F regression methods. The recruitment was taken at the lowest ... possible level for all these years (400 million specimens). Catch-per-unit-effort was also taken at the ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 1-18 : Autor(es): Borodin, R. and P. Kochkin

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