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1. Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects

   . Further, the inclusion of an area stratum by fishing year interaction as an additional random effect in ... standard method for modelling catch and effort data for Patagonian toothfish (Dissostichus eleginoides) for ... function. An alternative GLM with a more rigorous theoretical basis is introduced here. Catch is modelled ... ) estimated using a profile extended quasi-likelihood, and a log link function with log of effort as an offset ... 20 30 40 50 -0 .6 -0 .4 -0 .2 0. 0 0. 2 0. 4 0. 6 Ship index R an do n ef fe ct e st ... log-linear any chosen ref- erence level for an additive factor included in η’ other than YEAR simply ... effort as an offset. For 1 < λ < 2 this model is equivalent to assuming a compound Poisson-gamma ... key point to be noted from Figure 8 is that for the early years of the fi shery the estimated CPUE ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Автор(ы): Candy, S.G

2. On the instantaneous natural mortality rate of Champsocephalus gunnari, South Georgia (Subarea 48.3)

   composition of catches from 1964/65 to 1968/69 and the age/length key for the first half of 1972 were used in ... the calculations. The results provided a wide range of estimates for M. The discussion of the results ... suggested that M =0.56 should be used in stock assessment for C. gunnari in Subarea 48.3. File:  19-Frolkina ... 1968/69 and the age/length key for the first half of 1972 were used in the calculations. The results ... 0.55 (Frolkina and Dorovskikh, 1989) for M. This research was carried out using age/length ... from the seasons 1964/65 to 1968/69 were used (Table 1) as was the age/length key for the first half ... M were carried out using data for each individual season and for the entire period. Age composition ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 313–326 : Автор(ы): Frolkina, G.A. and R.S. Dorovskikh

3. Modelling variability and estimating power to detect change in Adélie penguin fledgling weights

   year, but there was no evidence that the rate of decline differed between years. A consequence of this ... weight data were used to examine the power to detect a change in fledgling weights after an impact. The ... or decrease after an impact. Fledgling weight was found to decline through the fledging period each ... work is identified to investigate this possibility. Modelling also indicated the potential for reducing ... birds, or (c) 30 birds each year. Change detected for three to five years of monitoring after change ... to an impact, and (2) for c years after the impact, in circumstances where the impact results in a ... the following calendar year (hereafter referred to as years). In each of the 12 years, an attempt was ... between- fledgling-within-year variance ( 2σ ). The estimated average weights for individual years may be ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Автор(ы): Emmerson, L.M., C. Southwell and J. Clarke

4. On reproduction of Electrona carlsbergi (Tåning)

   WG-FSA-90/20 ON REPRODUCTION OF ELECTRONA CARLSBERGI ... in experimental conditions to count for E. carlsbergi the number of eggs in one batch. An attempt ... Condition Stage (mg) Coefficient (%) I 12-30 0.1-0.2 Oogonia Juvenile IT 40-90 0.5-1.1 Oogonia ... fin. A total of 4380 females were examined. 160 fish were preserved in Bouin's fluid for further ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 397–409 : Автор(ы): Mazhirina, G.P.

5. Size and density of krill layers fished by a Japanese trawler in the waters north of Livingston Island in January 1988

   10 20 30 40 50 60 70 80 NET V 0 L U MED ENS IT Y ( g. m-3 ) Figure 3: Frequency distributions of ... -operative survey between RV Kaiyo Maru and a Japanese trawler was conducted from 17 to 20 January 1988 on ... the fishing ground north of Livingston Island (Figure 1). A total of 30 experiments on TS measurement ... including 30 co-operative experiments, was provided by the trawler. The number of krill aggregations per ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 339–345 : Автор(ы): Endo, Y. and Y. Shimadzu

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

   suggested that depletion estimators will not be appropriate tools for estimating local abundances of P ... liberty for about one to five weeks. The recaptured crabs had minimum movement rates of 0.08 to 0.25 n ... miles/day. Mark-recapture estimates of standing stock and density were made for the area around Phase 2 ... attempts were made to account for biased sampling of recaptured crabs and the movement of crabs away from ... experiments, CCAMLR INTRODUCTION The Commission has adopted an experimental harves t regime (EHR) for ... ) provided a formula for making an unbiased estimate of population size ( 6 ) from mark-recapture data ... as unmarked crabs; in Table 5. An attempt was made to account for Movement Rate (n mile/day) 0.08 ... extended (in a slightly revised format) for another three f ishing seasons (to the 1997/98 split-year ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 141–159 : Автор(ы): Watters, G

7. Estimating unaccounted fishing mortality in the Ross Sea region and Amundsen Sea (CCAMLR Subareas 88.1 and 88.2) bottom longline fisheries targeting Antarctic toothfish

   counted in estimates of total fishing removals or otherwise accounted for in stock assessment models. The ... average 208 tonnes of Antarctic toothfish mortality may be unaccounted for annually. While the current ... incorporated as sensitivity analyses in the 2011 stock assessments for the Ross Sea region and Subarea 88.2 ... integrity for many years. In this sense, marine debris from lost gear may be considered cumulative ... gear was used for this analysis. There is also an ‘other hooks lost’ field, which reports ‘hooks lost ... ’. Catch and effort data were extracted from the CCAMLR C2 database for the 2008–2011 fishing years. The ... data were then used to estimate hook loss for the entire area on an annual basis and sep- arately for ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 17–30 : Автор(ы): Webber, D.N. and S.J. Parker

8. Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South Georgia in January/February 1991

   stomachs and the feeding intensity were uncommonly low in a period when energy rich food is needed for the ... superba ~ Themisto gaudi. Mysidacea [%] 160 140 120 100 80 60 40 20 0 Month 11-111 11 ... to 3 877) and an unrepresentative coverage of the shelf from year to year. However, two pairs of ... needed for the final maturation of the gonads. Resume La composition du regime alimentaire et ... years when krill is abundant it represents the staple food. Mackerel icefish then tend to aggregate in ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 15–23 : Автор(ы): Kock, K.-H., I. Everson, S. Campbell, G. Parkes, Z. Cielniaszek and J. Szlakowski

9. Defining smaller-scale management units to further develop the ecosystem approach in managing large-scale pelagic krill fisheries in Antarctica

   define predator units. The derived conceptual model is then used to formulate an approach for developing ... the principles and approach required for developing small-scale management units to take account of ... predators’ needs when managing the fishery for Antarctic krill. It provides a theoretical foundation for ... ecosystem but should be sufficiently independent for fishing in that unit not to inadvertently affect ... conceptual model is then used to formulate an approach for developing fi sheries on prey species, notably ... of predators in an ongoing management framework for a fully developed fi shery (Constable et al ... been resolved, despite early consideration of the options that could be used to provide for an ... subdivided in Area 48 to better account for the needs of predators (SC-CAMLR, 2000a). An important issue to ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Автор(ы): Constable, A.J. and S. Nicol

10. Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island

    at a deeper range from 50 to 100 m in the day while at a shallower range from 20 to 50 m at night. In ... ;, () 20 30 40 50 60 ~~~~~ ~ ~~~~£1 " " " " Body length ( mm ) Maturity stages Figure 5: Body length and ... , tending to be at a deeper range from 50 to 100 m in the day while at a shallower range from 20 to 50 m at ... 50 a 100 m de jour alors qu'il frequente une couche moins profonde, de 20 a 50 m de nuit. Au large ... Ha r JIy6HHe 50-100 M, a HOqblO 6JIH)I{e K nOBepxHocTH B ,l(Hana30He 20-50 M. B HarYJIbHbIX apeaJIax ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 273–285 : Автор(ы): Ichii, T., H. Ishii, J.L. Bengtson, P. Boveng, J.K. Jansen and M. Naganobu

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