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1. Results of fish stock assessment survey, South Georgia region, November - December 1986

   /85 year classes. Coefficients of variation ranged from 67.9% (Notothenia squamifrons) to 12.6% (C ... probably represent age 3-5 fish, with relatively few age 6-8 year olds (25-29 cm). The peak at 37-38 cm ... poor recruitment in year classes before 1976;77. This would be consistent with reports of no ... (Table 2). Mean lengths of 16.6, 32.4 and 48.8 cm were observed from South Georgia strata 1-3, with ... stratum increased with depth from 22.4 to 26.5 and 27.5 cm in strata 1-3 (South Georgia), respectively ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 143-183 : Auteur(s): Gabriel, W.L.

2. Movement and growth of tagged Dissostichus eleginoides around South Georgia and Shag Rocks (Subarea 48.3)

   groundfish surveys and CCAMLR observer trips. This includes about 900 that have been injected with either ... at 42°S after about one year at liberty from some opportunistic tagging carried out on a toothfish ... experimental pot fishing in 2000 and 2001, and have been at liberty from one to two years. Four fish were ... around the island consistent with the direction of prevailing currents around the islands. Figure 3 ... groundfi sh surveys and CCAMLR observer trips. This includes about 900 that have been injected with ... seas area on the Patagonian Shelf at 42°S after about one year at liberty from some opportunistic ... . Crew members who fi nd and report tags to observers are rewarded with £5 or its equivalent per tag ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 101–111 : Auteur(s): Marlow, T.R., D.J. Agnew, M.G. Purves and I. Everson

3. Vertical migrations of mackerel icefish (Champsocephalus gunnari) on the South Georgia shelf

   of fish feeding activity was also observed at night. Fishing during this period with bottom trawls ... commercial concentrations of C. gunnari in years of high abundance of the species (1982/83, 1983/84 and 1986 ... may be used for clarification of survey techniques used in stock assessment. For a number of years ... observed at night. Fishing during this period with bottom trawls had yielded almost no catches at all. The ... ). With the onset of dusk (17:00 to 19:00 hr) fish begin migrating to the upper layers and the size of ... concentrations when fishing with midwater trawls. Trawls were set at depths where concentration of fish was the ... years of high abundance of the species (1982/83, 1983/84 and 1986/87). Catch-per-hour of fishing was ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 3–14 : Auteur(s): Frolkina, J.A. and V.I. Shlibanov

4. Statistical problems in krill stock hydroacoustic assessments

   issue of patchy years vs more even distribution would seem to have more impact on ecosystem management ... 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 ... behave as one large patch with variable discontinuities within some definable boundary. These large ... biomass for a surveyed area, in one, the biomass is nearly uniform with only a few small patches and in ...

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

5. 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 ... ) 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 ... loss of power associated with obtaining only three weight samples, and possible means of increasing ...

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

6. 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 ... performance via an effect on first-year survival over the winter period at sea, with lighter chicks less ... ) a linear trend in weight with date of measurement within each year may exist, (iv) the relation ... than 30 birds each year. This is the case for both one- and two-tailed tests with a power greater ...

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

7. 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

   , Chionodraco rastrospinosus and Lepidonotothen squamifrons. Estimates of standing stock biomass, along with ... estimator (Pennington, 1983; de la Mare, 1994) with the seabed area estimates of Everson (1987) and those ... , estimated biomass and variability will be higher within a sampling stratum for species with higher ... depths, it follows that species with the greatest positive percentage change in biomass estimates are ...

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

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

   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 ... aggregations. A maximum CPUE (3.8 tonnes/hour) was recorded at the beginning of the period, with a subsequent ... , 1 518 (42%) by BMRT vessels with an engine of 3 000-3 100 hp and 564 (15.6%) by BMRT vessels with ... 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 ... major current flowing towards the north-east of the region. The fleet was observed drifting with the ...

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

9. 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 ... identified in the Russian fishery. Some vessels set all their lines (usually three to four) in the early ...

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

10. 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 ... inconsistent with the earlier year-classes. Revisions to the estimated age-compositions - 348 - in ... , 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 ... millions before 1965, to some 3 to 6 millions for the 1967 to 1975 year-classes, to possibly only 40,000 ...

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

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