Résultats de la recherche

1. Seasonal and interannual variability of krill, salp and other zooplankton populations in the northwest Antarctic Peninsula region: summer 2001 in relation to the Long-Term AMLR Data Set

   past 20 years. This resulted from large concentrations of Calanoides acutus, Metridia gerlachei and ... Island region during 18-30 January 2001 (Survey A, 101 stations) and 12 February-12 March 2001 (Survey D ... . Increased abundance relative to 1999 resulted in part from recruitment of the 1998/99 and 1999/2000 year ... February-March reflected normal seasonal spawning in 2000/2001. This is the third year in a row that ...

   Meeting Document : WG-EMM-01/45 : Auteur(s): V. Loeb (USA)

2. Broadbandwidth sound scattering and absorption from krill (Meganyctiphanes norvegica), Mysids (Praunus flexuousus and Neomysis integer) and shrimp (Crangon crangon)

   (Meganyctiphanes norvegica) over the acoustical bandwidth of 30 to 210 kHz and compared to similar scattering ... derived with the generic krill shape and scaled to animal length (L). This implies that crustacean target ... volume of the animal. Collectively, these results provide tools for improving the detection of krill and ...

   Meeting Document : WG-EMM-04/40 : Auteur(s): S.G. Conti, D.A. Demer (USA) and A.S. Brierley (United Kingdom)

3. Near-shore acoustic surveys for Antarctic krill at South Georgia, January 2004

   observations from the past 20 years. A low density was perhaps not unexpected in line with recent cyclical ... were collected in seastate 6 with winds up to 30 knots and swells of approximately 2.5 m at survey ... patterns in density but may have been exacerbated by the presence of a large iceberg (40 miles by 30 miles ...

   Meeting Document : WG-EMM-04/35 : Auteur(s): A.S. Brierley, P.N. Trathan, J. Poncet and A. Morton (United Kingdom)

4. Possible effects of different levels of fishing on krill on predators - some initial modelling attempts

   , but computations based on this approach are deferred pending clarification of the Questions raised ... dynamics model incorporating recruitment fluctuations together with information on adult survival and ...

   Meeting Document : WG-KRILL-93/43 : Auteur(s): D.S. Butterworth and R.B. Thomson (South Africa)

5. ANALYSIS OF KRILL OBSERVER COVERAGE IN SUBAREA 48.3

   one season, and have been present on board for about 30% of the fishing season. They have achieved a ... efficient sampling proportion, at least for 48.3, should be >50% of vessels sampled each season, 20% of ... strategies should be pursued for at least 4 years before the Scientific Committee will have sufficient data ...

   Meeting Document : WG-EMM-09/25 : Auteur(s): D.J. Agnew, P. Grove, T. Peatman, R. Burns and C. Edwards (United Kingdom)

6. Assessment of Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3

   recent years. Projections indicate that a constant catch of 2,420 tonnes in the 2020  and 2021 seasons ...

   Meeting Document : WG-FSA-2019/28 : Auteur(s): T. Earl

7. An index of per capita recruitment

   )eM where R1 is the proportion of age-1 animals sampled in year y and M is the post-recruit mortality ... spawners. Introducing year to year random variability in both mortality and proportion of age age-1 ... introduce additional bias. On average, PCR will under estimate recruits per spawner by 30% if reasonable ... cycles in recruits per spawner after a 20% random sampling error was added to the value of R1 used in the ...

   Meeting Document : WG-EMM-99/50 : Auteur(s): R. Hewitt (USA)

8. Uncertainty in green weight estimates from Norwegian krill fishing vessels

   an issue raised repeatedly within CCAMLR for a number of years, resulting in a modification to the C1 ... krill fishery for Euphausia superba in the Antarctic. These vessels have in recent years contributed to ...

   Meeting Document : WG-EMM-13/41 : Auteur(s): G. Skaret and T. Knutsen (Norway)

9. Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3

   reductions may prove necessary during the 20 year period considered. Simulation tests, including one ... Article II is proposed: the primary objective is to prevent the expected lowest biomass of krill over a 20 ... restricted to an initial ceiling (Cc) for a 5 year period, with a reference CPUE level (CPUEref) calculated ... , this increase may be suspended or reversed in any year depending on how many of the previous three year ...

   Meeting Document : SC-CAMLR-VIII/BG/17 : Auteur(s): Delegation of South Africa

10. Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2002 winter and 2002/03 breeding season

    reported here. The overall number of entanglements showed a decrease from last year of 55% in winter and 67 ... observations), the reasons for this are discussed. Of the entanglements where the animal could be sexed, males ... years, most individuals observed entangled in debris were juveniles (88% of winter and 81% of summer ...

    Meeting Document : SC-CAMLR-XXII/BG/11 : Auteur(s): Delegation of the United Kingdom

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