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1. Possible effects of different levels of krill fishing on predators – some initial modelling attempts

   as functions of krill abundance, by considering a krill dynamics model incorporating recruitment ... krill predator species. A 'one-way' interaction model is developed, in which krill abundance ... sufficient realism to provide a possible basis for management recommendations. A mathematical framework for a ... considering a krill dynamics model incorporating recruitment fluctuations together with preliminary ... information on adult survival and breeding siuccess patterns for certain krill predator species. A 'one-way ... developments of this approach, before the latter can claim sufficient realism to provide a possible basis for ... management recommendations. A mathematical framevvork for a 'two-way' interaction model (including also the ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 79–97 : Autor(es): Butterworth, D.S. and R.B. Thomson

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

   predators’ needs when managing the fishery for Antarctic krill. It provides a theoretical foundation for ... the harvested species, and the ‘predator unit’, which does not have to be a relatively self-contained ... local populations of krill and the potential foraging densities of predators from within a harvesting ... unit (i.e. abundance of predators, distribution of colonies and foraging range) will provide a means of ... provides a theoretical foundation for considering the scales of manage- ment units involving the ... unit’, which does not have to be a relatively self-contained ecosystem but should be suffi ciently ... potential foraging densities of predators from within a harvesting unit (i.e. abundance of predators ... , distribution of colonies and foraging range) will provide a means of circumscribing predator units as well as ...

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

3. Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea

   (Euphausia superba) in the Scotia Sea, CCAMLR established a precautionary catch limit of 4 million tonnes and ... catch limit for krill among the SSMUs so as to preclude the inadvertent concentration of catches in a ... predator demand in the SSMU. The fifth option is a dynamic allocation based on land-based predator ... the fi rst two options a substantial portion (>65%) of the catch limit would be allocated to three ... of Antarctic krill (Euphausia superba) in the Scotia Sea, CCAMLR established a precautionary catch ... inadvertent concentration of catches in a small portion of the surveyed area. Five options for allocating the ... is a dynamic allocation based on land-based predator monitoring conducted just prior to, or early in ... estimates is possible. Qualitative conclusions are that: under the fi rst two options a substantial portion ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Autor(es): Hewitt, R.P., G. Watters, P.N. Trathan, J.P. Croxall, M.E. Goebel, D. Ramm, K. Reid, W.Z. Trivelpiece and J.L. Watkins

4. By-catch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in Statistical Area 58 (January to March 1995)

   Statistical Area 58 (January to March 1995) Abstract / Description:  Armstrong (1995) presented a final report ... . Unfortunately, Armstrong's fish by-catch data were not presented in a standardised manner. This paper ... presents a brief re-analysis of the by-catch data collected on board the Chiyo Maru No. 2; means and ... Chiyo Maru No. 2 did not provide a clear picture of the reiationship between haul-specific fish by-catch ... , San Diego CA 92038, USA Abstract Armstrong (1995) presented a final report of scientific ... fish by-catch data were not presented in a standardised manner. This paper presents a brief re ... Maru No. 2 did not provide a clear picture of the reiationship between haul-specific fish by-catch and ... a fraction of haul-specific krill catches) for observers collecting data on fish by-catch. Resume ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 111–123 : Autor(es): Watters, G

5. Statistical power to detect changes in growth rates of Antarctic fur seal pups

   only three dates in a season, and potential means of increasing the power of the CCAMLR Ecosystem ... detect a 17% change in the growth rate with a 10% chance of committing Type 1 or Type 2 errors. If only ... total number of pups weighed in a season,by decreasing the time between weighings. File:  23-Boveng-et ... in a season, and potential means of increasing the power of the CCAMLR Ecosystem Monitoring Program ... each sex, weighed on four dates at 28-day intervals) would result in the ability to detect a 17 ... % change in the growth rate with a 10% chance of committing Type 1 or Type 2 errors. If only three samples ... number of pups weighed in a season, by decreasing the time between weighings. Resume Des simulations ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 399–409 : Autor(es): Boveng, P., J.L. Bengtson and M.E. Goebel

6. Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?

   . A trial was conducted in the Ross Sea to determine the effectiveness of line setters in increasing ... the sink rates of IW longlines. Time-depth recorders were deployed on lines set with and without a ... line setter using a paired-treatment design. Sink rates of longlines set with and without a line setter ... sink rates. A trial was conducted in the Ross Sea to determine the effectiveness of line setters in ... a line setter using a paired-treatment design. Sink rates of longlines set with and without a line ... vitesse d'immersion des lignes. Un essai a été mené en mer de Ross pour déterminer si les lanceurs de ... déployées à l'aide du lanceur de ligne étaient plus proches de plusieurs mètres de la poupe du navire ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Autor(es): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith

7. Estimates of fish stock biomass around South Georgia in January/February 1985

   Abstract / Description:  Catch data from a bottom trawl survey in January/February 1985 have been used to ... . gibberifrons and Ps. georgianus were at a level of about 25 – 40% of that of the pristine state. The stocks ... most greatly affected by fishing are still N. rossii and C. gunnari. Biomass estimates indicate a ... CCAMLR in 1984 are discussed. Their effect on a recovery of the stocks seems, however, doubtful. File ... Abstract Catch data from a bottom trawl survey in January/February 1985 have been used to estimate stock ... and Ps. georgianus were at a level of about 25 - 40% of that of the pristine state. The stocks most ... greatly affected by fishing are still N. rossii and C. gunnari. Biomass estimates indicate a reduction ... CCAMLR in 1984 are discussed. Their effect on a recovery of the stocks seems, however, doubtful ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 1-32 : Autor(es): Kock, K.-H.

8. Patagonian toothfish in international waters of the Southwest Indian Ocean (Statistical Area 51)

   eleginoides) took place from 28 June to 27 July 2003. This experiment was carried out by a Spanish longliner ... , following commercial fishing procedures, in a restricted area south of Madagascar and north of Prince Edward ... and Marion Islands and the Crozet Islands, outside EEZs and CCAMLR waters. A total of 57 hauls was ... located at the edge of the principal area of D. eleginoides concentration, in which a residual recruitment ... 2003. This experiment was carried out by a Spanish longliner, following commercial fi shing procedures ... , in a restricted area south of Madagascar and north of Prince Edward and Marion Islands and the ... Crozet Islands, outside EEZs and CCAMLR waters. A total of 57 hauls was made at depths between 360 and 1 ... area of D. eleginoides concentration, in which a residual recruitment effect persists. The total CPUE ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 207–214 : Autor(es): López Abellán, L.J

9. Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea 48.2) during 1989/90

   fishing ground off the northwestern tip of Coronation Island. CPUE showed variability with a minimum in ... respectively), followed by a decrease to 6.9 and 7.1 tonnes/hour by May and June. The location of the fishing ... hydrodynamic characteristics of the area, for example a complex current around the islands together with ... aggregations. A maximum CPUE (3.8 tonnes/hour) was recorded at the beginning of the period, with a subsequent ... one fishing ground off the northwestern tip of Coronation Island. CPUE showed variability with a ... /hour respectively), followed by a decrease to 6.9 and 7.1 tonnes/hour by May and June. The location of ... by certain hydrodynamic characteristics of the area, for example a complex current around the ... current together with krill aggregations. A maximum CPUE (3.8 tonnes/hour) was recorded at the beginning ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 51–62 : Autor(es): Sushin, V.A

10. Sea-surface temperature and krill catches around South Georgia in December–February 1989–1991 and 1999–2001

    conducting a krill fishery in the area during the entire year. The reliability of these forecasts could be ... with the early 1990s, the period from December to February in the late 1990s and early 2000s showed a ... was-0.62°C). The observed cooling of South Georgia waters had a negative effect on fi shing activities ... . However, it dropped to 39 766 tonnes in 2000/01. The SST maps for 1999–2001 showed a prominent advection ... conducting a krill fi shery in the area during the entire year. The reliability of these forecasts could be ... showed a considerable decrease in mean SST off South Georgia. This observation is especially obvious ... the SST anomaly was -0.62°C). The observed cooling of South Georgia waters had a negative effect on ... a prominent advection of Weddell Sea waters to the northwest of South Georgia and a weakening of ...

    Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 165–174 : Autor(es): Vanyushin, G.P

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