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1. Use of the Leslie stock depletion model for the assessment of local abundance of Patagonian toothfish (Dissostichus eleginoides)

   Paper Title:  Use of the Leslie stock depletion model for the assessment of local abundance of ... used to examine local patterns in catch per unit effort (CPUE) in the longline fisheries for Patagonian ... in localised areas for periods of at least three days. The results suggest that there is greater ... potential for application of the model in some areas than in others, but in general there is no sufficiently ... ) since 1989. Vessels from the former Soviet Union dominated the fishery for the first three years ... CCAMLR Working Group on Fish Stock Assessment (WG-FSA) made an estimate of the total removals of fish ... on the target species is difficult to assess, particularly in the early years of the fishery when ... to fisheries for D. eleginoides off the Pacific coast of Chile. An experimental approach similar to ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 55–77 : Автор(ы): Parkes, G., C.A. Moreno, G. Pilling and Z. Young

2. Investigations of required sampling regimes for environmental parameters

   monthly mean temperature over two years with a significance α of 0.05 and a power P of 0.8. Sampling wind ... Paper Title:  Investigations of required sampling regimes for environmental parameters Abstract ... speed continuously or as daily maxima and minima would be sufficient to detect a 10 to 20% change in ... temperatures in that 563 year were lower than for the other two years (see Figure 1). Maximum and minimum ... two most directly influential on predators; they were examined for the months of December, January ... ). Sensitivity analysis for January, for two years of monitoring, is shown in Table 2. Summary information for ... detection Wind speed daily multiple n=8 per day 10-20% High recording for one month daily multiple n-30 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 561–573 : Автор(ы): Agnew, D.J.

3. Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South Georgia

   the given harvest control rule to set a two-year total allowable catch (TAC). One issue is the ... Paper Title:  Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South ... Georgia Abstract / Description:  The current CCAMLR assessment method for mackerel icefish ... data which, in conjunction with the bootstrapped survey biomass data, yields an estimate of the ... population forward for two years under a fixed harvest rate. The target harvest rate is that which ensures ... resultant two-year TAC), will be in a length- not an age-structured paradigm. In such a length-based ... proposed method and the CMIX/GYM procedure was performed for the years 2006 to 2009. For each year, the ... differences for 2008 which were explained by an unusual length distribution from which it was difficult to ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 129–137 : Автор(ы): Hillary, R.M., C.T.T. Edwards, R.E. Mitchell and D.J. Agnew

4. Sensitivity analysis for parameters of predatory species CCAMLR Ecosystem Monitoring Program

   Paper Title:  Sensitivity analysis for parameters of predatory species CCAMLR Ecosystem Monitoring ... sensitivity analyses on existing data regarding predator breeding biology parameters, this report presents ... /88 and 1988/89 breeding seasons. The data on the following parameters were analyzed: adult weight on ... (% Current Value) (20 %) 5 5 (30%) 2 3 Sample sizes required for five years of monitoring and a = 0.10 ... required for two years of monitoring and a = 0.05 (5%) 42 66 Smallest Difference (d) (1 0%) 1 2 1 9 ... . Statistical Power (P) 0.6 0.8 Sample sizes required for two years of monitoring and a = 0.05 Smallest ... Difference (d) ( 1 0 %) 34 54 (% Current Value) (20 %) 9 1 4 (30%) 5 7 Sample sizes required for five ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 411–432 : Автор(ы): Whitehead, M.D.

5. A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty

   known catch history and thus allow assessments of yield to be made for existing fisheries. An example is ... Paper Title:  A generalised model for evaluating yield and the long-term status of fish stocks ... projection model for assessing the long-term annual yield which satisfies objectives for the maintenance of ... the spawning stock biomass in accordance with CCAMLR criteria. These specify a bound on the ... ) 1.21 I 0 10 20 30 40 50 60 Length (mm) Selectivity (b) 1.6 1 1 0 2 4 6 Age (years) Relative ... Uncertainty (a) Run 1 Biomass (thousand tonnes) Recruits (millions) 0 10 20 30 40 50 Years (b) Run 2 ... of growth during the year); an age-selectivity function, a(a) (allows for a fishery that targets ... existing fisheries. An example is presented for the Patagonian toothfish, Dissostichus eleginoides, around ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Автор(ы): Constable, A. and W.K. de la Mare

6. Line weights of constant mass (and sink rates) for Spanish system Patagonian toothfish longline vessels

   no maintenance. An experiment was conducted on a Spanish-system longline vessel to determine the ... shaped steel weights weighing 5 kg would be an appropriate substitute for 8.5 kg rock weights ... Paper Title:  Line weights of constant mass (and sink rates) for Spanish system Patagonian ... -system longline vessels to attach 8.5 kg weights at 40 m intervals on longlines to minimise interactions ... , which are smaller for equivalent weight, and require no maintenance. An experiment was conducted on a ... over two days, on 9 and 10 June 2007, on the FV Tierra del Fuego near Isla Nueva (55°13.0'S 66°25.4'W ... heavier than 8 kg. The authors purpose-built the rock weights which were weighed to the nearest 5% on an ... was deployed on each set of the line (i.e. two weight types x three weight masses x 10 replicates ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 93–106 : Автор(ы): Robertson, G., C.A. Moreno, E. Gutiérrez, S.G. Candy, E.F. Melvin and J.P. Seco Pon

7. Utilising data from ecosystem monitoring for managing fisheries: development of statistical summaries of indices arising from the CCAMLR Ecosystem Monitoring Program

   anomalies. The last section outlines an approach to the further development of CEMP indices for application ... Paper Title:  Utilising data from ecosystem monitoring for managing fisheries: development of ... :  A potential method is presented for combining data collected as part of the CCAMLR ecosystem ... monitoring program (CEMP) into a single index for each of predator, prey and environmental parameters. The ... simulation for two forms of alternative hypothesis with data series of up to 20 and 30 years. In both forms ... Program, two lengths of time were investigated: 10 and 20 years. The correlation matrix was estimated ... the test for robustness indicated above. For a dataset that extends to 20 years, at least half the ... is fixed at 20 years. The data series is continued with additional shifted values for a further ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 101–117 : Автор(ы): de la Mare, W.K. and A.J. Constable

8. Revised age and growth estimates for Antarctic starry skate (Amblyraja georgiana) from the Ross Sea

   georgiana in the Ross Sea suggested that these skates initially grow very rapidly for about five years ... been generated that suggest much slower growth, greater ages-at-maturity (about 20 years compared with ... Paper Title:  Revised age and growth estimates for Antarctic starry skate (Amblyraja georgiana ... ) from the Ross Sea Abstract / Description:  A previous study on the age and growth of Amblyraja ... outliers with positive residuals, centred on about 75 cm and 18 years, was apparent for both readers ... frequency, and dots and error bars indicate the mean and two standard errors for read- ings on the y-axis ... skates having large discrepancies between the two readers. 10 20 30 R ea de r 2 , r ea di ng 4 ... (years) 0 10 20 30 40 R ea de r 1 , r ea di ng 2 (y ea rs ) ( m ea n ± 2S E ) 0 10 20 ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 211–220 : Автор(ы): Francis, M.P. and M.J. Gallagher

9. Towards the development of a management plan for mackerel icefish (Champsocephalus gunnari) in Subarea 48.3

   for an interim approach to the setting of precautionary catch limits for this fishery. An approach ... Paper Title:  Towards the development of a management plan for mackerel icefish (Champsocephalus ... years of poor krill availability. Thus natural  ortality of C. gunnari may, in some years, increase by a ... outlines a scheme which would use information from studies on krill and predators undertaken as part of the ... problems in years of low krill abundance, consequent dependence for food on another plankton crustacean ... the time the stock is only depleted for one or two years. This behaviour is a direct result of the ... therefore a need for an interim approach to the setting of precautionary catch limits for this fishery. An ... process that is expected to take several years. DEVELOPMENT OF A MANAGEMENT PLAN FOR C. GUNNARI The ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 63–77 : Автор(ы): Agnew, D.J., I. Everson, G.P. Kirkwood and G.B. Parkes

10. A hypothetical life cycle for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region

    Paper Title:  A hypothetical life cycle for Antarctic toothfish (Dissostichus mawsoni) in the Ross ... Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region are reviewed. Based on the presumed ... of eggs and larvae over a 6–24 month period were investigated using an oceanic circulation model ... locations of toothfish larvae after an 18–24 month period were moderately consistent with the distribution ... 70°S from December to May for all years and all vessels. Month G S I ( % ) 0 5 10 15 20 25 ... rest, and is setting this time delay for the floats deeper in the water column. After two years the ... shelf and on the Ross Sea slope. They probably remain there for a fur- ther 2–3 years before they gain ... several attempts at develop- ing a life cycle for D. mawsoni. Yukhov (1982) drew together unpublished and ...

    Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 35–53 : Автор(ы): Hanchet, S.M., G.J. Rickard, J.M. Fenaughty, A. Dunn and M.J. Williams

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