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1. A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery

   Control of the Antarctic krill fishery Abstract / Description:  CCAMLR aims to develop a feedback approach ... whether a feedback approach is likely to achieve the multiple objectives that EBM implies in the complex ... Control (MPC) to achieve objectives for a harvested species, its predators and the fishery, in a ... simulation model that incorporates uncertainty and spatial and trophic complexity. The approach adjusted ... predator biomass and the model is therefore a bottom-up model with no top-down effects. The catches from ... inter- val of 100 time-steps when there is no harvesting. The parameters controlling the degree of ... measurements of these variables. In the current study there was no explicit repre- sentation of this inference ... expense of higher biomass variability. The fixed catch strategy has no catch variability but it also has ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Autor(es): Hill, S.L. and M. Cannon

2. Fishery Report 2013: Dissostichus eleginoides Crozet Island inside the French EEZ (Subarea 58.6)

   Description / Abstract:  Fishery Report 2013: Dissostichus eleginoides Crozet Island inside the ... the longline fishery to waters outside 12 n miles and no shallower than 500 m. A size limit has been ... the EEZ in Subarea 58.6 and in 2008 was estimated to be 224 tonnes. 3 11. There have been no ... methodological issues in its assessment, no estimates of the IUU catch of Dissostichus spp. have been provided ... is still unknown and no fish from Crozet Island have been recovered on the Kerguelen Plateau ...

   Document : Site Section: Publications

3. Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation

   Paper Title:  Sensitivity investigation of the SDWBA Antarctic krill target strength model to ... fatness, material contrast and orientation Abstract / Description:  The distorted-wave Born approximation ... model is recognised as state-of-the-art in predicting acoustic target strength (TS) from fluid-like ... marine organisms. A stochastic version, the so-called SDWBA model, is endorsed by CCAMLR to predict the ... rigorously if the scattering as a function of size and frequency for an individual (i.e. target strength ... modelled (Foote, 1991). In the case of zooplankton, due to the complexity of the scatter- ing processes ... , the acoustical estimates rely on the best aspects of both approaches. In recent decades, large ... et al., 2002; Demer and Conti, 2003). The scattering from an object is given by its form, size and ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Autor(es): Calise, L. and G. Skaret

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

   Paper Title:  Size and density of krill layers fished by a Japanese trawler in the waters north of ... Livingston Island in January 1988 Abstract / Description:  The size and density of fishable krill layers in ... the northern waters of Livingston Island were determined during the co-operative survey carried out by ... RV Kaiyo Maru and a Japanese trawler. The mean values of layer length, thickness and surface density ... BY A JAPANESE TRAWLER IN THE WATERS NORTH OF L1VINGSTON ISLAND IN JANUARY 1988 Y. Endo and Y ... . Shimadzu Abstract The size and density of fishable krill layers in the northern waters of Livingston ... Island were determined during the co-operative survey carried out by RV Kaiyo Maru and a Japanese ... trawler. The mean values of layer length, thickness and surface density were 3.25 km, 13.3 m and 228.0 9 ...

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

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

   ) from the Ross Sea Abstract / Description:  A previous study on the age and growth of Amblyraja ... georgiana in the Ross Sea suggested that these skates initially grow very rapidly for about five years ... and growth in A. georgiana that is radically different from the published interpretation is presented ... . By counting fine growth bands in the caudal thorns instead of broad diffuse bands, growth curves have ... % (Campana, 2001). There was no apparent bias between the two readings of reader 1, although individual ... reader 1 for the oldest skates. Randomisation tests showed no significant dif- ference between the ... age and gRowth estimates foR antaRctic staRRy skate (AmblyrAjA georgiAnA) fRom the Ross sea M.P ... , Wellington New Zealand Email – m.francis@niwa.co.nz M.J. Gallagher Irish Sea Fisheries Board The New ...

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

6. Distribution and abundance of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean

   Paper Title:  Distribution and abundance of Macrourus carinatus on BANZARE Bank in the southern ... Indian Ocean Abstract / Description:  This paper provides an assessment of the distribution and abundance ... of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean (Divisions 58.4.1 and 58.4.3 ... ) based on results from a trawl survey in 1999. This is the first quantitative assessment of M. carinatus ... DISTRIBUTION AND ABUNDANCE OF MACROURUS CARINATUS ON BANZARE BANK IN THE SOUTHERN INDIAN OCEAN E.M. van Wijk ... 7050 Tasmania, Australia Abstract This paper provides an assessment of the distribution and ... abundance of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean (Divisions 58.4.1 and 58.4.3 ... ) based on results from a trawl survey in 1999. This is the first quantitative assessment of M ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 171–178 : Autor(es): van Wijk, E.M., A.J. Constable, R. Williams and T. Lamb

7. Observations on haul-out patterns and trends in the breeding populations of southern elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo - King George I.)

   Paper Title:  Observations on haul-out patterns and trends in the breeding populations of southern ... de Mayo-King George I. were studied during the breeding season from 1979 to 1987. Two main objectives ... were taken into consideration: haul-out pattern and the female population trend. In both places, the ... intrinsic population growth rate is positive. In 1982, at Stranger Point, a sharp decrease of the female ... population growth rates were based on the exponential function: Nt = No e rt as suggested by Caughley (1977 ... PATTERNS AND TRENDS IN THE BREEDING POPULATIONS OF SOUTHERN ELEPHANT SEAL AT PENINSULA VALDES (PATAGONIA ... (patagonia) and 25 de Mayo-King George I. were studied during the breeding season from 1979 to 1987. Two ... main objectives were taken into consideration : haul-out pattern and the female population trend. In ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 453-463 : Autor(es): Vergani, D.F., M.N. Lewis and Z.B. Stanganelli

8. Quantifying movement behaviour of vessels in the Antarctic krill fishery

   Paper Title:  Quantifying movement behaviour of vessels in the Antarctic krill fishery Abstract ... / Description:  Ten years of recent fine-scale haul-by-haul krill data were used to characterise the behaviour ... of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed a ... /haul, and the travel distance decreased as the catch level increased; this pattern was most obvious for ... processing rate may be vessel specific, however, below a critical point for which the catch is no longer ... Quantifying movement behaviour of vessels in the antarctic krill fishery S. Kawaguchi and S.G. Candy ... Australian Antarctic Division Department of the Environment, Water, Heritage and the Arts Channel Highway ... -scale haul-by-haul krill data were used to characterise the behaviour of the krill fishery. Analysis of ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 131–148 : Autor(es): Kawaguchi, S. and S.G. Candy

9. Evaluation of the results of trawl selectivity experiments by Poland, Spain and USSR in 1978/79, 1981/82 and 1986/87

   Paper Title:  Evaluation of the results of trawl selectivity experiments by Poland, Spain and USSR ... (Figure 3; see also Table 1.1 of the Appendix). Similarly, no clear relationship was observed between SF ... studied and there is no clear relationship between mesh size increase and L50• For these reasons the ... encourage further experiments with the 'open mesh' netting. There is no information available to evaluate ... SC-CAMLR-VIII/BG/20 Rev. 1 EVALUATION OF THE RESULTS OF ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 163–196 : Autor(es): Slosarczyk, W., E. Balguerias, K. Shust and S. Iglesias

10. Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data

    Paper Title:  Analysis of variability of krill size and fish by-catch in the Japanese krill ... fishery based on scientific observer data Abstract / Description:  To estimate the optimal relative sample ... size of scientific observer data collected on Antarctic krill commercial fishing vessels, the ... . Observer datasets from the Japanese krill fishery from 1995 to 2008 were analysed using a hierarchical ... subareas, but there is no obvious regional bias (Figures 4a to 4c). The divergence of krill length at ... effect (Figures 6a to 6e). The estimated number of by-catch fish is very small. There is no obvious ... variance shows no clear trend among sampling levels (Figure 6f). 95% CI of the estimated vari- ance ... In the Antarctic, there is much concern about the impact of climate change on biodiversity, species ...

    Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Autor(es): Okuda, T. and M. Kiyota

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