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1. Methods of age determination for mackerel icefish (Champsocephalus gunnari Lönnberg 1905) from the South Georgia Island shelf

   groups. It is suggested that the determined radii of annual elements of otolith could be used to adjust ... analyzing data on length frequency distribution of fish in catches simultaneously with otolith radii of fish ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 37–49 : Autor(es): Frolkina, Zh.A.

2. Physical oceanographic setting of the Siedlecki January 1987, South Shetland Island data set

   Scotia Sea water by a zone of varied width (10 to 100 km) of water which can best be considered as ... mixing processes of Bransfield Straits water (derived from the Weddell, with further local modification ... the Scotia Front protrudes to the south, perhaps associated with mesoscale structures. The Weddell ... -Scotia Confluence in the Bransfield Straits is associated with abundant krill populations. It is ... Straits is associated with abundant krill populations. It is speculated that mixing of Weddell and ... Bransfield Strait; deeper than that the Bransfield water seems to be isolated from the open ocean, its only ... interval, with the salinity steadily increasing to the bottom. It is possible that this mixture is induced ... slope of the Shetland Islands, might be related to the presence of mixing of Pacific water with water ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 161-184 : Autor(es): Gordon, A.L.

3. Distribution and size of Antarctic krill (Euphausia superba Dana) in Polish commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999

   shorter, therefore it must be assumed that there are factors other than daylight which have an impact on ... summer from 1997 to 1999. The density of concentrations varied with area and season. The densest ... , therefore it must be assumed that there are factors other than daylight which have an impact on the density ... observed in the South Orkneys area. It must be emphasised that in the years immediately pre- ceding these ... distribution sometimes overlapped with that of the daytime concentrations. During the day the density of ... 10). DISCUSSION While considering the results of the studies, it must be kept in mind that they ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 83–105 : Autor(es): Jackowski, E

4. Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000

   . Trawling positions seemed to be primarily governed by the distribution of larger mature krill, especially ... at the beginning of fishing operations each season. In summer, biological factors that affect product ... other factors may also affect fishing position. It may be that fishing position is determined by a ... abundance may be related to the extent of its distribution. This evidence also suggests that ice condition ... CCAMLR Scie~~ce, Vol. 8 (2001): 25-36 ANALYSIS OF ... in the season. Trawling positions seemed to be primarily governed by the distribution of larger ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 25–36 : Autor(es): Kawaguchi, S. and K. Segawa

5. Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?

   recent years. This suggests that fishing at the trigger level would be equivalent to a long-term ... ;50% of the trigger level since 1991. Comparison with the 9.3% reference exploitation rate suggests ... that current management is precautionary at the regional scale. The subarea catch limits help prevent ... excessive concentration of catch at the subarea scale. Finer-scale management might be necessary to manage ... of the regional biomass in recent years. This suggests that fishing at the trigger level would be ... - its (the amount of krill that the fishery is currently allowed to catch) with biomass estimates; and ... exploitation rate (the percentage of an initial biomass that can be caught each year) of 9.1%. The inputs to ... conditions are met. The precautionary catch limit specifies the catch that could be permitted when ‘the ...

   Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 31–51 : Autor(es): Hill, S.L., A. Atkinson, C. Darby, S. Fielding, B.A. Krafft, O.R. Godø, G. Skaret, P.N. Trathan and J.L. Watkins

6. Effects of recruitment variability and natural mortality on generalised yield model projections and the CCAMLR decision rules for Antarctic krill

   (Euphausia superba) fishery. The current precautionary catch limit was based on supplying the GYM with a ... krill around the Antarctic Peninsula (Subarea 48.1) along with increasing rates of natural mortality ... the annual size distributions of krill in penguin diets. Simulations with either no fishing, or with ... in krill harvests in Area 48 beyond the trigger level require verification that the krill recruitment ... based on a particular data series may be susceptible to vagaries associated with that specific series ... approach that can be used to compare population responses to proposed levels of harvest against decision ... based on maximum age. Murphy and Reid (2001) suggested that a value of 1.25 produced the best match ... natural mortalities rep- resented a situation with annual rates of mortality that can vary widely ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 81–96 : Autor(es): Kinzey, D., G. Watters and C.S. Reiss

7. A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey

   tonnes, with a standard deviation of 10 million tonnes. The MaxEnt method provides new insights into the ... major strength of MaxEnt. The chosen reconstruction must be that with the highest evidence, regardless ... situations of sparse data allow so many different possible maps to be consistent with that data. It is ... data can be considered as an image in which krill densities are plotted on a rectangular grid, with ... - 2000 Survey. There is in principle no mathematical transform that can be applied to the data that will ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Autor(es): Heywood, B.G., A.S. Brierley and S.F. Gull

8. A review of data on abundance, trends in abundance, habitat use and diet of ice-breeding seals in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   important first steps for improving ecosystem models. This review focuses on seals that breed in ice ... , but noted that adjustments for haul-out would also have to be made for these species. From 1970 to ... stressed that this did not include the potentially significant number of seals that might be in ice-free ... data to allow estimates of densities of seals hauled out to be made with line transect methods. Some ... estimates be treated only as the good-faith guesses that they were offered as. The methods used during the ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 49–74 : Autor(es): Southwell, C., J. Bengtson, M. Bester, A.S. Blix, H. Bornemann, P. Boveng and M. Cameron, J. Forcada, J. Laake, E. Nordøy, J. Plötz, T. Rogers, D. Southwell, D. Steinhage, B.S. Stewart and P. Trathan

9. A declining trend in the abundance of Notothenia rossii marmorata and Notothenia gibberifrons observed in fjords in two sites in the South Shetland Islands

   as significant. The material for the current study was obtained with trammel nets at Potter Cove ... species in relation to Notothenia neglecta, a species with similar ecological habits in the fjords. Since ... neighbouring sites in the South Shetland Islands. This phenomenon might be explained as a consequence of the ... was not controlled, with the result that various yields were obtained per haul (Figure 2). Potter ... assumption is that changes in population sizes will be reflected in proportional changes in catches ... , implies that in future years recruitment to the commercial fisheries will be low, and recovery to levels ... material for the current study was obtained with trammel nets at Potter Cove, King George/25 de Mayo 1 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 263–274 : Autor(es): Barrera-Oro, E. and E. Marschoff

10. Fishing for toothfish using pots: results of trials undertaken around South Georgia, March–May 2000

    toothfish was notably lower than that achieved in the longline fishery. Importantly, the use of pots ... demonstrating that pots can be used to catch toothfish in Subarea 48.3 with zero incidental mortality of ... 3KOHOMPIYCCKYFO ~ @ @ ~ K T P I R H O C T ~ MeTOAa 13 MIIHHMH7MPOBZlTb 06'be~ IIpPInOBa. npenJIaraeTcX pXn ... hooks in 1998; SC-CAMLR, 1998a and 1999). Despite this decrease, the UK continues to be concerned that ... Figure 1). Effort was to be evenly spread throughout the areas, however due to problems with sea-ice ...

    Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 93–105 : Autor(es): Agnew, D.J., T.M. Daw, G.M. Pilling and M.G. Purves

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