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1. 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 ... replicates. Smoothing occurred in less than 50% of replicates in some of the 20-year time series for which ... dependent on that subset of parameters being representative of all the parameters for that year and on the ... Program, two lengths of time were investigated: 10 and 20 years. The correlation matrix was estimated ...

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

2. 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 ... and research surveys leading to estimates of stock biomass. An extension of this scheme would use ... required for C. gunnari. File:  05agnew-etal.pdf ... 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 ... scarcity. Management Plan for C. gunnari in Subarea 48.3 C . gunnari may therefore encounter two ... Sequence of Sampling, Analytical and Decision-making Processes The outline of an approach for using ...

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

3. Seabird interactions with trawl and longline fisheries for Dissostichus eleginoides and Champsocephalus gunnari

   Paper Title:  Seabird interactions with trawl and longline fisheries for Dissostichus eleginoides ... incidental mortality were observed during commercial trawling operations for Patagonian toothfish ... (Dissostichus eleginoides) in the 1994/95 season near Macquarie Island and Kerguelen Island. Longlining for D ... . eleginoides and trawling for mackerel icefish (Champsocephalus gunnari) were also observed at Kerguelen. Many ... Division 58.5.1 during longline fishery for D. eleginoides in the vicinity of the 1994/95 season with two ... 12 February 1995 with only two short breaks of less than one day each. The vessel made an average ... ) followed the ship for the final two weeks of fishing. Other species, such as the wandering albatross ... during four trawls in particular meteorological conditions. For two trawls, the ship's speed relative ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 93–99 : Auteur(s): Williams, R. and D. Capdeville

4. 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 ... biomass. The model provides a flexible method for assessing the influence of different patterns of growth ... of growth during the year); an age-selectivity function, a(a) (allows for a fishery that targets ... ) 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 ... 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 : Auteur(s): Constable, A. and W.K. de la Mare

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

   shaped steel weights weighing 5 kg would be an appropriate substitute for 8.5 kg rock weights ... no maintenance. An experiment was conducted on a Spanish-system longline vessel to determine the ... Paper Title:  Line weights of constant mass (and sink rates) for Spanish system Patagonian ... hydrodynamically shaped (e.g. torpedo-shaped) steel weights, which are smaller for equivalent weight, and require ... , which are smaller for equivalent weight, and require no maintenance. An experiment was conducted on a ... depth (see below for the reasons for the choice of these two depths), the parametric spline model was ... ) was higher, suggesting that 5 kg steel weights would be an appropriate substitute for 8.5 kg rock ... with 5 kg steel weights attached will not result in an increased risk to seabirds. These two ...

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

6. Is the attempt to estimate the biomass of Antarctic fish from a multi-species survey appropriate for all targeted species? Notothenia rossii in the Atlantic Ocean sector – revisited

   appropriate for all targeted species? Notothenia rossii in the Atlantic Ocean sector – revisited Abstract ... already heavily fished at the beginning of the 1970s. The closure of the fishery for this species in 1985 ... to provide more accurate estimates of the abundance of the species, it is suggested that an acoustic ... properly in the almost 20 years since the fi shery was closed. Two alternatives to the approach generally ... Elephant Island. Catches of the species have been small (<50 kg/ 30 min) with the exception of one or two ... ). Consequently, biomass estimates obtained for N. rossii have in general been low. Due to one or two large ... less than 20 min duration were disregarded. All survey data are held in the CCAMLR database. For ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 141–153 : Auteur(s): Kock, K.-H., M. Belchier and C.D. Jones

7. Seabird interactions with longlining operations for Dissostichus eleginoides around South Georgia, April to May 1994

   albatrosses. The average mortality rate for the 20 sets was 0.48 birds/1 000 hooks and maximum mortality 3.12 ... Paper Title:  Seabird interactions with longlining operations for Dissostichus eleginoides around ... South Georgia, April to May 1994 Abstract / Description:  Longlining operations for Dissostichus ... eleginoides off South Georgia were assessed for incidental mortality and interactions with seabirds. Twenty ... each species in the vicinity of the ship was recorded every 30 minutes. Of the 20 sets for which ... line was used for approximately six of the 20 sets and a noise-emitting scarer, based on regular or ... albatrosses. The average mortality rate for the 20 sets was 0.48 birds/l 000 hooks and maximum mortality ... of the line, delimited by the marker buoys. For two of the four sections, all strikes and dives for ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 111–121 : Auteur(s): Ashford, J.R., J.P. Croxall, P.S. Rubilar and C.A. Moreno

8. A statistical method for estimating the level of IUU fishing: application to CCAMLR Subarea 48.3

   , and confidence intervals for, fish and bird catches by IUU vessels. In order to estimate an IUU catch ... there must have been at least one encounter with an FPV in a year; no encounters in a year are ... with IUU fishing. The mean and variance of fish catch rate was calculated for each area and each year ... measures. Three years were analysed: 1998/99, 1999/2000 and 2000/01. Each year fully covered the period 1 ... encounter with an FPV in a year; no encounters in a year are interpreted as zero IUU fi shing. For each IUU ... actual FPV record for a year (October to September), an IUU cruise was randomly placed within the year ... simulation model for the three years 1998/99, 1999/2000, 2000/01 and for two lengths of IUU cruise, the ... variance of fi sh catch rate was calculated for each area and each year using reported catch and effort ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 119–141 : Auteur(s): Agnew, D.J. and G.P. Kirkwood

9. Seabird interactions with longlining operations for Dissostichus eleginoides at the South Sandwich Islands and South Georgia

   Paper Title:  Seabird interactions with longlining operations for Dissostichus eleginoides at the ... mortality was seen and only one bird was caught on a hook; nevertheless many species in these aggregations ... lines and gave specifications for the line in an appendix to the measure. Based on experiences in the ... but were 10 mm in diameter. Pieces of the squid Illex argentinus were used for bait, with roughly 20 ... completed in the 1992/93 season, a value for seabird mortality of 2 436 birds/year Seabird Interactions ... scientist to participate as an observer on board the fishing vessel conducting the exploratory fishing ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 143–153 : Auteur(s): Ashford, J.R., J.P. Croxall, P.S. Rubilar and C.A. Moreno

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 ... 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 ... probably remain in the northern area for 6–18 months before migrating back to the slope to regain condition ... 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 ... Figure 6: Percentage distribution of floats in each of 19 sub-regions at the end of the two-year ... provided for 19 sub- regions, each 10° in latitude and 20° in longitude. The number of floats per sub ...

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

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