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1. Refinements to the strategy for managing depleted fish stocks based on CCAMLR objectives

   states of a depleted stock, and take into account uncertainty in assessments. Sample calculations show ... that applying a policy of F 0.1 will not always lead to stock recovery in two to three decades, and ... above the current level in 20 years; (ii) the fishing mortality which results in a subjective ... probability of 0.5 that the stock is at or above GNAI (or other target level) in 20 years; (ill) the ... other target level) in 30 years; and (iv) the fishing mortality corresponding to FO•l • A TAC (which ... been put into effect the target years for recovery become fixed at 20 and 30 years after the procedure ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 467–475 : Автор(ы): de la Mare, W.K. and A. Constable

2. [node:field-journal-volume]:37-51

   40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40 45 50 55 60 Age (years) To ta l l en gt h ... moderate lifespan (i.e. a maximum age in excess of 15 years), and a few species are slow growing and very ... parameters (Table 3). However, the lack of fi sh aged younger than 9 years has resulted in unrealistic ... years for females. DISCUSSION In 2002 observers had diffi culty identifying the macrourids of the ...

   Science Journal Paper : 37–51

3. Observations of fishing operations on a krill trawler and distributional behaviour of krill off Wilkes Land during the 1985/86 season

   operations were observed on board a commercial vessel and the actual operation described in detail. ‘Fish ... -finder’ was most useful in detecting swarms, while sonar was used to judge the towing direction. The size ... of fished swarms ranged from 100 m to 10 km with different distributions occurring in different ... off Africa. In recent years, the through-year activity of the trawlers has come to be incorporated ... Wilkes Land (including George V Land), and the Scotia Sea. In earlier years, the trawlers operated in ... paired samples from 30 sets of measurements, it was concluded that krill were well mixed in the net and ... was caught in 14 min. of towing. Absolute density was estimated as 40 g/m3 20 t r-l V-;::l cO ::r ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 335-368 : Автор(ы): Ichii, T.

4. A rationale for conservation areas within Antarctic waters

   :  The application of potential conservation measures listed in Article IX 2 of the Convention requires ... marine living resources’ (Article IX 2 (b)). In order to select meaningful boundaries for such areas ... potential conservation measures listed in Article IX 2 of the Convention requires "the designation of ... " (Article IX 2 (b)). In order to select meaningful boundaries for such areas, first priority has been ... in earlier years within the sector from 700 W to 160o W. More recently there has been a move within ... in Article IX 2(b) of the Convention. - 517 - As was recognised in the Australian submission, a ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Автор(ы): Chittleborough, R.G.

5. Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds

   Abstract / Description:  Selectivity studies were carried out for two types of steelon codends used in ... process- especially in the latter case- is not satisfactory. Scotia Sea icefish, Chaenodraco wilsoni, and ... the trawling among all the species studied. Conclusions and observations were in some cases based on a ... fishing vessels were included in a 32/31 bottom trawl set-up which was used in previous years on ... in the case of 80 mm codend. Selection effectiveness increased from 20% for 80 mm codend to almost ... for Antarctic icefish, selectivity ogives of 80 mm and 100 mm codends were drawn together in Figure 8 ... phase) No. of fish 6 814 20 701 3 217 7 053 3 090 measured in codend No. of fish 2 198 2 826 420 8 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 107-142 : Автор(ы): Zaucha, J.

6. Effects of different harvesting strategies on the mackerel icefish Champsocephalus gunnari around South Georgia

   the mackerel icefish (Champsocephalus gunnari) have been simulated for a period of 30 years. These ... interval of three years with no fishing in between; and changes in net selectivity resulting in a shift in ... , should not occur earlier than four years after a good recruitment. A forward shift in partial recruitment ... 50% F 0.1 with F increasing three or five years after a good recruitment; pulse fishing at an ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 77–100 : Автор(ы): Köster, F.W. and K.-H. Kock

7. Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations

   include krill in food-web models and to guide modellers to key sources of data. It describes the strengths ... fishery (sustained sampling in one place and wide area and time coverage) and via predators (long time ... . Temporally, the intense (order of magnitude) interannual variability in krill population size within the ... . Growth in spring, summer and autumn is now fairly well quantified, but mortality remains an enigma. We ... ) method has been in use for 20 years but there have been various attempts to use other analytical ... length) and relatively long lived (up to 7 years), can swim fast and maintain their position in the ... and the seabed. Schmidt et al. (2011) included this habitat in the abovementioned 20% calculation ... (Kawaguchi et al., 2005). The fishery effort in recent years has been concentrated mainly in the Scotia ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Автор(ы): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)

8. The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)

   of the development of a management regime for them. Finally it aims to highlight areas in which ... further research should be directed in order to provide information on which to base the most appropriate ... assessment and management methods in light of continuing interest in the regional crab fishery. Considerable ... gaps in our knowledge of the biology, ecology and demography of the lithodid species at South Georgia ... . Very small P. spinosissima (~ 20 mm CL) have occasionally been caught in demersal survey trawls on ... then raised by the total fishable area in Subarea 48.3 between 200 and 1 000 m depth (SC-CAMLR, 1992 ... storage. Moulting (and therefore mating) in P. spinosissima has been observed year-round but may be ... . Lovrich, S. Thatje, U. Nettelmann and K. Anger. 2005. First year growth in the lithodids Lithodes ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Автор(ы): Belchier, M., T. Peatman and J. Brown

9. Histological study on the ovarian development of mackerel icefish (Champsocephalus gunnari) from the South Georgia Islands

   individuals (45%) was found, together with a relatively low occurrence of females that spawned or were in ... on ovarian development in Champsocephalus gunnari caught by the RV Dr Eduardo L. Holmberg in the ... South Georgia and Shag Rocks areas in February and March 1994. Six phases of oocyte development were ... to a regression stage. In some cases these ovaries presented few atretic oocytes; in others a ... the specimens ranged from two to five years, estimated from the age/length key presented in Barrera ... the periphery, in contact with the oolema. The zona radiata increases in thickness (20 pm), showing ... histological analysis was carried out on ovarian development in Charnpsocephalus gunnari caught by the RV Dr ... Eduardo L. Holrnberg in the South Georgia and Shag Rocks areas in February and March 1994. Six phases of ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 35–49 : Автор(ы): Macchi, G.J. and E.R. Barrera-Oro

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

    index of a morphometric characteristic? Abstract / Description:  In sexually dimorphic species ... avoiding the necessity of sex determination. However, uncertainty in sex ratios can lead to considerable ... Type I and Type II errors. Lack of knowledge about the sex ratio between years makes combining the data ... equal variance and equal numbers of males and females in the sample. The first condition was met in ... varying success. Values of c and d in equation (1) together with the sample size required to be 80 ... * Abstract In sexually dimorphic species, morphometric characteristics have separate distributions for ... determination. However, uncertainty in sex ratios can lead to considerable Type I and Type II errors. Lack of ...

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

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