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1. Intra-annual variability in the density of Antarctic krill (Euphausia superba) at South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ‘annual’ estimates of krill density

   estimates with the observed pattern of within-year variability showed that some of the apparent ‘year-to ... the regression-predicted within-year variation. Years that stand out for markedly low krill density ... consistently over all three years, was detected. Krill densities in winter were predominantly low (mean = 18.7 ... = 64.2). A sinusoidal regression model (period = 52 weeks) with time as the independent variable ... resident krill population, but were consistent with the notion of large infl uxes of krill in early summer ... -predicted within-year variation. Years that stand out for markedly low krill density (i.e. densities below ... variation in krill density from the 3-year period is shown in Figure 3. These mean time-series data were ... = 52 weeks) fi t the weekly mean data signifi cantly (P < 0.0001). Based on the 3-year ADCP time ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 27–41 : Autor(es): Saunders, R.A., A.S. Brierley, J.L. Watkins, K. Reid, E.J. Murphy, P. Enderlein and D.G. Bone

2. A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region incorporating multi-year mark-recapture data

   of tagged fish and subsequent multi-year data of recapture of tagged fish in conjunction with fishery ... Sea Region incorporating multi-year mark-recapture data Abstract / Description:  An exploratory ... hence a multi-year mark-recapture tagging program was initiated by New Zealand fishing vessels in 2001 ... model was developed for Antarctic toothfish in the Ross Sea region that incorporates multi-year release ... the last three years of data suggest a higher biomass than previous data, with the most influential ... . mawsoni in the Ross Sea region a 7.5% increase in initial biomass, with all other years contributing to ... , although the computer resources and time taken to run models can rapidly increase with more years of mark ... subsequent multi-year data of recapture of tagged fish in conjunction with fishery catch-at-age data. This ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 39–62 : Autor(es): Mormede, S., A. Dunn and S.M. Hanchet

3. Observation of seabirds in the Southern Ocean in 1988/89

   ); • Druzhnaya and Molodezhnaya (28 December 1988 to 3 January 1989); • Molodezhnaya and Bunger Hills (10 ... poor visibility, heavy fog, snow or blizzard. Binoculars with a magnification of 7x50 were used for ... only with ice distribution patterns over the observation period. According to the data obtained, ice ... conditions in the Southern Ocean during the 1988/89 season were reckoned to be close to average. 3 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 521–542 : Autor(es): Vagin, A.V. and V.V. Popov

4. An index of per capita recruitment

   assumptions that: (i) post-recruit mortality does not vary over age or between years; (ii) 100% of age-l ... largest with high values of R 1; increasing M tends to offset this effect but only slightly. A simple ... years, and when all age-l animals spawn. These conclusions are insensitive to changes in the shape of ... the functional relationship between spawners and recruits. PCR is biased low with age-specific decline ... capita recruitment (PCR). Such a measure could be obtained with surveys in successive years provided ... with one year of mortality removed: In addition to compounding the results of two PCRy_l ... , R3, R4 . . . are the proportions of N that are in the age-l, age-2, age-3, age-4 . . . year classes ... ; M2, M3, Mq . . . the post- recruit mortality rates for age-2, age-3, age-4 ... year classes; and y ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 179–196 : Autor(es): Hewitt, R

5. A fine-scale model of the overlap between penguin foraging demands and the krill fishery in the South Shetland Islands and Antarctic Peninsula

   the krill resource and is based on a detailed model of penguin foraging patterns combined with catch ... penguin foraging patterns combined with catclh positions. This analysis shows that the overlap between ... , M YTO C 1988 r. p a s ~ e p 3 ~ 0 r o cosnaAeHm yMeHbrrraeTcx. Resumen La CCRVMA ha ... CCAMLR for a number of years,. especially for those predators which are restricted to land-based ... of fishing in Subarea 48.1 over the period 1988 to 1991 was highly consistent between years, and ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 99–110 : Autor(es): Agnew, D.J. and G. Phegan

6. Catch per unit effort and proportional recruitment indices from Japanese krill fishery data in Subarea 48.1

   of Log,,,CPUE with increasing years in the Livingston Island area (T = -0.695, n = 15, p = 0.0003 ... pai io~e HccneAosaHHn. C ~ p y r o i i CTOPOH~I, B pai io~e ocTpoea 3 n e a a ~ ~ CPUE x a p a ... ~ ~ e p a 3 0 s a n c ~ 6onbrueii ~ e m r o ~ o ~ o f i M ~ M ~ H Y H B O ~ T ~ ~ , npM 3TOM K ~ K M ... time of maximum abundance were used. Net-haul data with small sample sizes (i.e. less than 20 hauls ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 47–63 : Autor(es): Kawaguchi, S., T. Ichii and M. Naganobu

7. Trawl bag selectivity in the Champsocephalus gunnari fishery

   were carried out in June 1990 in the South Georgia area concurrently with trawl surveys as part of the ... and the selectivity factor was 3.10 for a mesh size of 80 mm. Comparison of these results with results ... from previous years demonstrates close similarity. A significant increase in modal length (up to 34-35 ... was 3.10 for a mesh size of 80 mm. Comparison of these results with results from previous years ... of 299 80 cm. Comparison of these results with those from previous years shows close similarity ... 1990 in the South Georgia area concurrently with trawl surveys as part of the main biological and ... BMRT Anchar in June 1990 in the South Georgia area concurrently with trawl surveys within the main ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 295–312 : Autor(es): Bidenko, V.G. and I.G. Istomin

8. 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 ... (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 ... ages 3 and 4 (1983/84 and 1982/83 year classes), while the shoulder at 19 cm would correspond to fish ...

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

9. 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 ... experimental pot fishing in 2000 and 2001, and have been at liberty from one to two years. Four fish were ... at 42°S after about one year at liberty from some opportunistic tagging carried out on a toothfish ... 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 ... released during experimental pot fi shing in 2000 and 2001, and have been at liberty from one to two years ... . 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 : Autor(es): Marlow, T.R., D.J. Agnew, M.G. Purves and I. Everson

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

    commercial concentrations of C. gunnari in years of high abundance of the species (1982/83, 1983/84 and 1986 ... of fish feeding activity was also observed at night. Fishing during this period with bottom trawls ... may be used for clarification of survey techniques used in stock assessment. For a number of years ... years of high abundance of the species (1982/83, 1983/84 and 1986/87). Catch-per-hour of fishing was ... observed at night. Fishing during this period with bottom trawls had yielded almost no catches at all. The ... used in stock assessment. For a number of years scientists of AtlantNIRO have been conducting trawl ... , CIS 3 4 du Sud presentent de nettes tendances. Pendant la journee, les poissons se ...

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

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