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1. Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997

   of considerable value in interpreting the results from ecosystein assessments such as that in ... Paper Title:  Variations in condition indices of mackerel icefish at South Georgia from 1972 to ... predominantly on krill. An index of condition which uses the ratio of the measured total mass to the estimated ... mass is shown to provide a good indicator of local krill density. The index is likely to be little ... interpreting the results from ecosystein assessments such as that in progress under the auspices of CCAMLR ... by the Convention for the Conservation of Antarctic Marine Living Resources. An index of condition ... to be related to the amount of krill available to C. gi~i~izari in the sampled region (Everson et ... . The Inass of the viscera will vary mostly due to the amount of food contained in the stomach and ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Автор(ы): Everson, I. and K.-H. Kock

2. Midwater trawl catchability in relation to krill and possible ways of assessing gross catch

   the basis of data obtained from AtlantNIRO expeditions from 1983 to 1990 in the Scotia Sea. A ... Paper Title:  Midwater trawl catchability in relation to krill and possible ways of assessing ... methodology was developed for and applied to determining the rate of krill filtration through the trawl rope ... and netting and also the probability that krill will come into contact with various parts of the net ... in the Elephant Island area (January, 1985) were as follows: • mean depth of swarm distribution, H ... . The rational development of the kriU fishery hinges on the conservation of the Antarctic marine ... when it comes to solving the task in hand. The authors of this work have attempted to examine the ... process of krill fishing and the way the catch is formed in the trawl and also to devise approaches to ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Автор(ы): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov

3. Marine mammals and demersal longline fishery interactions in Crozet and Kerguelen Exclusive Economic Zones: an assessment of depredation levels

   whales. These two species, alone or in co-occurrence with each other, were observed in 71% of the 1 308 ... two species, alone or in co-occurrence with each other, were observed in 54% of the 6 262 longlines ... monitored. Interactions were observed in all fishing areas. The effect of depredation was assessed by ... comparing catch-per-unit-effort (CPUE) (fish/weight/hook) of each longline set in the absence/presence of ... to compare the mean CPUE in different combina- tions of marine mammal species observed within each ... , mean CPUE was lower in the presence of sperm whales than it was when no marine mammals were present ... or in co-occurrence with each other, were observed in 71% of the 1 308 longlines set. In the ... in co-occurrence with each other, were observed in 54% of the 6 262 longlines monitored ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 67–82 : Автор(ы): Roche, C., C. Guinet, N. Gasco and G. Duhamel

4. Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries

   McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years. There ... Paper Title:  Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in ... operations in the Heard Island region in 2000. The length at first maturity (L 50) was 418 mm (total length ... Australian sub-Antarctic trawl fisheries Abstract / Description:  Estimates of age and growth were obtained ... Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR). In some areas the macrourid ... sub-Antarctic waters of the Southern Ocean (Iwamoto, 1990). They are commonly caught as by- catch in ... information on the life history and abundance of these species. In particular, age, growth and reproductive ... the adoption by CCAMLR in 2002 of anal length as the standard length measurement for macrourids. In ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Автор(ы): van Wijk, E.M., R. Williams and A.J. Constable

5. Calibration of an acoustic echo-integration system in a deep tank, with system gain comparisons over standard sphere material, water temperature and time

   Paper Title:  Calibration of an acoustic echo-integration system in a deep tank, with system gain ... sphere. It presents the results of an extensive calibration of a Simrad EK500 scientific echosounder with ... length (0.1, 0.3 and 1.0 ms), target depth (0.8 to 7.5 m), and time (149 days). The total range in TS ... gain, including the effects of temperature, standard sphere and time, is 2.9 dB. Gain values calibrated ... commonly used echosounder and a short pulse length, the error in mean target strength estimates of animals ... ), target depth (0.8 to 7.5 m), and time (149 days). The total range in TS gain, including the effects of ... between SA gain and TS gain. The total spread in SA gain, including the effects of temperature, standard ... interpretation of the data with respect to the many theoretical assumptions. The main contributions of bias in ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 127–144 : Автор(ы): Demer, D.A. and R.P. Hewitt

6. Trends in population size and breeding success at colonies of macaroni and rockhopper penguins, Marion Island, 1979/80–1995/96

   . The only significant relationship between inter-season trends in the number of pairs breeding at the ... period, while the other remained stable. Trends in the number of pairs breeding at the three rockhopper ... of macaroni penguins were significantly correlated in all three inter-colony comparisons over the ... were significantly correlated in only one of the three inter-colony comparisons. The greater coherence ... (Table 1). The mean number of eggs hatched per clutch varied between nil (in the case of complete ... /90. The lowest survival of chicks was 29% at Macaroni Bay in 1989/90. The overall mean value for ... correlated (Table 2). The mean number of eggs hatched per clutch varied between 0.41 at Trypot Fault in ... 1985/86 and 0.96 at Van den Boogaard River in 1990/91 (Figure 8). The overall mean number of eggs ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 89–103 : Автор(ы): Cooper, J., A.C. Wolfaardt and R.J.M. Crawford

7. Preliminary model of krill fishery behaviour in Subarea 48.1

   :  A simple model of the behaviour of the krill fishery in FAO Statistical Subarea 48.1 (South Shetland ... catches in the subarea. A number of management scenarios are considered which involve the closure of (i) a ... . However, in this scenario, the catch would be more concentrated in foraging areas of land-based predators ... Paper Title:  Preliminary model of krill fishery behaviour in Subarea 48.1 Abstract / Description ... compares well with the mean distribution of all catches in the study area over the years 1988 to 1992 as ... simple model of the behaviour of the krill fishery in FAO Statistical Subarea 48.1 (South Shetland ... catches in the subarea. A number of management scenarios are considered which involve the closure of (i ... at present. However, in this scenario, the catch would be more concentrated in foraging areas of ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 71–79 : Автор(ы): Agnew, D.J. and V.H. Marín

8. Selectivity of commercial and research trawls in relation to krill

   more large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in ... selectivity properties of the trawl used in acoustic surveys have different effects on the accuracy of krill ... the selectivity properties of trawls used in acoustic surveys than are estimates of krill numerical ... Paper Title:  Selectivity of commercial and research trawls in relation to krill Abstract ... large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in mean ... difference between mean values of krill length in the research trawl samples, on the other hand, was ... the basis of mean krill length in trawl samples. Krill density estimates (individuals/m2) were ... Length (mm) Length (mm) Parameter Mean length of krill in the sample (mm) Target strength (dB ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 161–169 : Автор(ы): Kasatkina, S.M

9. An assessment of toothfish in Subarea 48.3 using CASAL

   Paper Title:  An assessment of toothfish in Subarea 48.3 using CASAL Abstract / Description:  This ... paper presents an assessment of the stock of toothfish around South Georgia (Subarea 48.3) using the ... CASAL stock assessment software (Bull et al., 2005). Detailed attention is given to the incorporation of ... as much of the available tuning data as possible, as well as a whole range of assessment ... rigorous statistical weighting of the various tuning datasets. Bayesian methods are used in the estimation ... . This would then allow calculation of long-term yields satisfying CCAMLR decision rules in the ... measurements of the catch weighted by catch size. In the early years (1985–1995) only fleet-based ... cohorts of age 1–4 fish can be identi- fied from peaks in the length-frequency data and estimates of ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 65–95 : Автор(ы): Hillary, R.M., G.P. Kirkwood and D.J. Agnew

10. Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index

    critical level of krill availability which is just enough to maintain the best factory performance. In this ... analysis the status of fishing in Subareas 48.1 and 48.2 was not clear. A linear correlation was observed ... Paper Title:  Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a ... Japanese krill fishery for the 1980/81 to 2003/04 fishing seasons were analysed. For a number of ... CPUE indices. The inter annual trends in actual mean values showed different patterns from those of ... critical level of krill availability which is just enough to maintain the best factory performance. In ... this analysis the status of fi shing in Subareas 48.1 and 48.2 was not clear. A linear correlation was ... studies pointed out the importance of including a measure of searching time in the abundance index in ...

    Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Автор(ы): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu

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