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1. Some comments on the procedure for testing estimators of krill abundance which utilise survey data

   Abstract:  Since krill distributional data do show evidence of spatial correlation, estimators of abundance which attempt to model such effects (such as those based on Kriging) may provide improved abundance estimates from survey data. However, computer simulation studies are first required to test

   Meeting Document : WG-KRILL-91/21 : Author(s): D.S. Butterworth, D.L. Borchers and D.G.M. Miller (South Africa)

2. Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands

   Abstract:  The waters in the vicinity of the South Shetland Islands and Elephant Island were surveyed to investigate mechanisms for the formation of krill concentrations and to estimate acoustic biomass of krill in the 1990/91 austral summer. Main krill concentrations occurred in the shelf waters

   Meeting Document : WG-KRILL-91/22 : Author(s): Delegation of Japan

3. Brief report of the sixth Antarctic survey cruise of JFA R/V Kaiyo Maru

   Author(s):  M. Naganobu, T. Ichii and H. Ishii (Japan) Title:  Brief report of the sixth Antarctic survey cruise of JFA R/V Kaiyo Maru Approval:  Approved

   Meeting Document : WG-KRILL-91/23 : Author(s): M. Naganobu, T. Ichii and H. Ishii (Japan)

4. A simple approach for calculating the potential yield of krill from biomass survey results

   Abstract:  Estimates are calculated for the parameter λ in the yield equation Y = λ M B0 for a kri11 fishery in which both the fishery and kri11 growth are seasonal. The criterion used for the calculations is that the probability that the kri11 spawning biomass drops below 20% of its average pre

   Meeting Document : WG-KRILL-91/24 : Author(s): D.S. Butterworth (South Africa) and M. Basson (United Kingdom)

5. By-catch of fish in the krill fishery

   Abstract:  Observations are reported of icefish being taken as bycatch during krill fishing operations from a research vessel. The results indicate that the bycatch of fish in the commercial krill fishery may be significant in some areas of the South Georgia shelf. The problem is thought to be

   Meeting Document : WG-KRILL-91/25 : Author(s): I. Everson (United Kingdom), A. Neyelov and Y. Permitin (USSR)

6. When will the information required for rational management of the krill fishery become available and what should CCAMLR do in the meantime?

   Author(s):  S. Nicol and A. Constable (Australia) Title:  When will the information required for rational management of the krill fishery become available and what should CCAMLR do in the meantime? Approval:  Approved

   Meeting Document : WG-KRILL-91/26 : Author(s): S. Nicol and A. Constable (Australia)

7. Krill aggregation characteristics in South Orkney Island area in April 1990

   Abstract:  Physical characteristics of 437 krill aggregations detected acoustically in the area o£ S.0rkney are discribed.All swarm parameters were registered and processed automatically.The aggregations thickness and length (2.5 m and 10.4 m)were considerably smaller, then those published by.

   Meeting Document : WG-KRILL-91/27 : Author(s): P.P. Fedulov, V.V. Devicin, E.N. Timohin and N.B. Shishin (USSR)

8. Possible approach to krill movement estimation by hydroacoustic observations

   Abstract:  Method of estimation of krill drift velocity in water current,using repeated acoustic transects on rectangular polygon is discribed.Dimensions of polygon and frequency of acoustic observations have to be determined with taking into account distribution patterns of krill,its patchiness,

   Meeting Document : WG-KRILL-91/28 : Author(s): P.P. Fedulov (USSR)

9. Report on discussions on krill target strength

   Author(s):  K.G. Foote (Norway), D. Chu and T.K. Stanton (USA) Title:  Report on discussions on krill target strength Approval:  Approved

   Meeting Document : WG-KRILL-91/41 : Author(s): K.G. Foote (Norway), D. Chu and T.K. Stanton (USA)

10. A proposal for stock biomass estimate of Euphausia superba Dana by the environmental index Q200 in comparison with Hampton’s method (extended abstract)

    Author(s):  M. Naganobu (Japan) Title:  A proposal for stock biomass estimate of Euphausia superba Dana by the environmental index Q200 in comparison with Hampton’s method (extended abstract) Approval:  Approved

    Meeting Document : WG-KRILL-91/42 : Author(s): M. Naganobu (Japan)

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