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1. Changes in the fish biomass around Elephant Island (Subarea 48.1) from 1976 to 1996

   from 1978/79 to 1988/89, with most of the commercial harvesting taking place in the first two years of ... for finfishing from 1989/90 onwards. Results of the first bottom trawl survey carried out after the ... 564 Kock 80"W Latitude 20°W Weddell Sea km m 0 200 400 70"s . - Figure 1: Area of ... ) 10 20 30 40 50 Length (cm) Length (cm) m S 6 - 3 5 - 5 4 - 10 20 30 40 50 Length (cm ... 1976 to 1996. Kock Length (cm) 10 20 30 40 50 60 70 80 Length (cm) 1978: no data 10 20 30 ... class; fish from this year class were 20 to 25 cm long in January/February 1976 and 30 to 37 cm in ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 165–189 : Autor(es): Kock, K.-H

2. Estimating optimal observer coverage in the Antarctic krill fishery

   : observers have been placed on approximately 50% of vessels fishing in any one season, and have been present ... on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ... vessels sampled each season, 20% of total season hauls sampled for krill and an equivalent or higher ... . The South Georgia data suggest that such strategies should be pursued for at least four years before ... 32 Fo ro s 20 02 25 0 90 72 80 28 29 39 11 N iit ak a M ar u 20 ... ar u 20 07 66 1 15 7 48 31 20 7 42 3 Sa ga S ea 20 07 30 3 30 7 ... st in 20 08 71 55 21 38 21 30 10 0 30 A ve ra ge s 62 ... by a vessel per sea- son being sampled; • all vessels being observed at least once every two years ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Autor(es): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards

3. An assessment of the impact of krill fishery on penguins in the South Shetlands

   tonnes/10-20-day period), the present catch rate (≤10  x 10 3 tonnes/1O-day period) is smaller by one or ... ) fishery and penguins during the penguins' breeding season (December to March) in the South Shetland ... 20 or 30 X 30 n miles from recent surveys (1989/90 and 1990/91). The krill biomass for each of ... respective colonies for chinstraps, 80 km for Adklies and 20 km for gentoos (Everson, 1987; Trivelpiece et ... 10 to 20 days, the present catch rate (S10 X 103 tonnes/lO-day period) is smaller by one or more ... X 103 tonnes) and its variability (the order of 100 X 103 tonnes/10-20-day period), the present ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 107–128 : Autor(es): Ichii, T., M. Naganobu and T. Ogishima

4. Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea

   continental slope and shelf of the Ross Sea at depths from 30 to 120 m, during the Italian expeditions of 1997 ... body) valid in the range (0.2 ≤ krb ≤ 20) (see equa- tion 9): The sharpness parameter s used in this ... . 20 0° 17 0. 97 0° 17 4. 51 0° 17 5. 27 3° 16 7. 48 0° L oc at io n (s ta rt ... –1 35 80 –1 10 75 –1 15 Fo rm s of fi sh d is tr ib ut io n T ra ns ec t ... 21 41 8 45 3 20 9 56 93 3 30 11 5 47 13 7 % b y nu m be r 82 .3 % 82 .9 ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 75–104 : Autor(es): Azzali, M., I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi

5. Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons

   's third depletion square. The assumptions of the mark-recapture model were probably violated, but ... liberty for about one to five weeks. The recaptured crabs had minimum movement rates of 0.08 to 0.25 n ... attempts were made to account for biased sampling of recaptured crabs and the movement of crabs away from ... e f i sh ing s ea sons ( sp l i t -years 1993/94 t o 1995/96) (CCAMLR, 1993) and has been ... crabs were at liberty for about one to five weeks. The recaptured crabs had minimum movement rates of ... area around Phase 2's third depletion square. The assumptions of the mark-recapture model were ... movement of crabs away from their release sites. Density estimates from the mark-recapture data were in ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 141–159 : Autor(es): Watters, G

6. Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica

   mature at about 340–360 mm total length (TL) and about 3–4 years of age, and that 95% were mature at ... about 370–400 mm TL and 6–8 years of age. Counts of growth zones in sectioned otoliths were used to ... approached a significantly larger mean asymptotic maximum size than males. Maximum ages of 8 and 11 years ... , meristics, reproductive biology, diet and age estimation. All of the icefish sampled were identified as ... ). All of the possible prey items were in advanced stages of digestion, except for two fish eggs. One ... total length (TL) and about 3–4 years of age, and that 95% were mature at about 370–400 mm TL and 6–8 ... years of age. Counts of growth zones in sectioned otoliths were used to determine ages and von ... 340–360 mm TL and 3–4 years of age, while 95% are mature at 370–400 mm TL and 6–8 years of age ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 139–165 : Autor(es): Sutton, C.P., M.J. Manning, D.W. Stevens and P.M. Marriott

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

   account for 20% of the total mass (Kock, 1992; Everson et al., 1996). Arising from this, we envisage two ... success. Year ct FUSE CEPE MAPE Nov Dec Jan Feb Mar Trip Surv Meal S Meal S Comparison of Condition ... [~s gzrnnnvi) are widespread on the South Georgia shelf, Antarctica, and have been fished ... . Le poisson des glaces (Cl~nn1psoce~1zal~~s glri~riari) est une espece courante sur le plateau de ...

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

8. Trends in relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, South Shetland Islands, after commercial fishing in the area

   inshore sub-populations of N. rossii and G. gibberifrons over the last 16 years was most probably caused ... approximately one year. Barrera-Oro et al. 62"s 60°W (a) S h e t l a n d Figure 1: (a) The South ... probably reflects the high availability of these two species at a site which is far away from the main ... defined as the period from 1 May to 30 April next year. Variance was normalised using the trans ... performed on total and relative catches taken at PC are shown in Table 1. Split-year (1 May to 30 April ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 43–52 : Autor(es): Barrera-Oro, E.R., E.R. Marschoff and R.J. Casaux

9. Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias

   . Candy, S.G. 2011b. Estimation of natural mortal- ity using catch-at-age and aged mark-recapture data: a ... , Hobart, Australia: 6 pp. Dunn, A. and S. Rasmussen. 2008. Development of a spatially explicit age ... Science, Vol. 20 (2013): 63–72 63 Factors that may InFluence the accuracy oF abundance estImates From ... with respect to M, R and C. Where these assumptions are not met, parameter estimates may be biased ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Autor(es): Welsford, D.C. and P.E. Ziegler

10. An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) for the Heard and McDonald Islands using CASAL

    Division 58.5.2), using CASAL and data consisting of multi-year random stratified trawl survey (RSTS ... data included in the model, age-4 and 5 fish are fully selected, whereas when the survey data have ... at ea u s L s U a 1 a 2 SG 3 19 90 SG 5 19 93 SG 2 19 99 SG 7 20 03 SG 1 a2 -e ... id (s 2) 0 0 0 0 0 0 0 17 6 30 6 38 0 24 1 66 L on gl in e E (f 7 ... ) M id (s 2) 0 0 0 0 0 0 0 0 25 95 0 0 IU U (I U U ) 30 00 71 17 ... y re m ov al s 30 00 89 30 77 51 38 45 47 09 49 24 62 01 41 15 32 ...

    Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 1–34 : Autor(es): Candy, S.G and A.J. Constable

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