Résultats de la recherche

1. Net sample validation of acoustic techniques used to identify and size Antarctic krill

   collected with an RMT8. Around 80 % of the targets thought to be krill on the basis of their appearance on ... species groups has been attempted using differences in echo strength at two acoustic frequencies (ΔMVBS ... echo-charts were also identified as krill on the basis of their difference in backscatter at 38 and 120 ...

   Meeting Document : WG-EMM-97/46 : Auteur(s): Watkins, J.L., Brierley, A.S.

2. A way forward in the multivariate analysis of Antarctic predator, prey and environment indices: predator-environment interactions at Seal Island

   Abstract:  The CCAMLR Ecosystem Monitoring Programme has two aims: to detect changes in critical ... , which effectively predicts chinstrap success given sea-ice data with an R2 of 0.914. This model is then ... used to propose a method of distinguishing between effects of environmental variation and harvesting on ...

   Meeting Document : WG-EMM-96/27 : Auteur(s): Agnew, D.J., Watters, G., Hewitt, R.

3. Anthropogenic feather soiling, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 1999/2000

   . Quantities of fishing gear remained within the levels of previous years for all other species, except black ... associated with seabirds at Bird Island, South Georgia. In this, the seventh year of standardised recording ... , an unprecedented quantity of hooks (both with and without long-line attached) and monofilament long ... which were plastics) showed 75% and 93% increases from the previous maxima for wandering albatross and ...

   Meeting Document : SC-CAMLR-XIX/BG/04 : Auteur(s): Delegation of the United Kingdom

4. Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic peninsula region

   0.88 to 0.94 for different years. The exchange rate of water masses and krill biomass within one summer ... Abstract:  A net sampling survey for krill was carried out by RV ‘Meteor’ along the Antarctic ... Peninsula from 26 December 1989 to 14 January 1990. Results were compared with data of an identical survey ...

   Meeting Document : WG-KRILL-91/15 : Auteur(s): Delegation of Germany

5. Trends in entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at South Georgia

   . Consequently, the authority responsible for the management of Southern Ocean marine resources (CCAMLR) actively ... campaigned for compliance with the MARPOL provisions relating to waste disposal at sea, and for cutting of ... any material unavoidably jettisoned which could form collars to entangle seals. Five subsequent years ... incidence has been halved in recent years. However, the South Georgia fur seal population has approximately ...

   Meeting Document : SC-CAMLR-XV/BG/03 : Auteur(s): Delegation of the United Kingdom

6. Age distribution of breeding female Antarctic fur seals in relation to changes in population growth rate

   1971-1973 was 7.41 (SE = 0.26) years and in 1988 it was 6.93 (SE = 0.20) years. After correction for ... and corrected for the rate of increase of the population gave adult survival rates of 0.66 (SE = 0.03 ... ) and 0.88 (SE = 0.02) for the 1988 and 1971-1973 samples, respectively. The reduced apparent adult ... age-dependent arrival time at the pupping beach in 1988, the mean age was 6.22 (SE = 0.14 years ...

   Meeting Document : WG-CEMP-91/21 : Auteur(s): I.L. Boyd, N.J. Lunn, P. Rothery and J.P. Croxall (United Kingdom)

7. Los pinguinos y el hombre (the penguins and the man)

   general, for the scientific communities and the third is an specific one, to introduce argentine people ... Abstract:  “The penguins and the man” is a video made with the three main goals, the first two are ... involved in work for CEMP. 1.- The first objective is to show basic biology of adelie penguins necesary to ... the Convention and CEMP. 3.- The third is to show to argentine workers, specially for their first time ...

   Meeting Document : WG-CEMP-92/43 : Auteur(s): J.C.Ricca, M.A. Porretti and D.F. Vergani (Argentina)

8. Feasibility of trawl surveys to estimate abundance of juvenile toothfish in Subarea 88.1

   conducting trawl surveys for juvenile toothfish in Subarea 88.1 (Ross Sea). Potential problems including a ... and previous research cruises. The major limitation on a trawl survey in the Ross Sea is ice cover. On ... average over the last three years, 63% of the seabed area from 0–600 m depth was not fishable in January ... –February because of ice. Ice cover varied greatly between years, with the untrawlable area ranging from 31 ...

   Meeting Document : WG-FSA-SAM-04/07 : Auteur(s): Wood, B.A., ODriscoll, R.L., Hanchet, S.M.

9. Reproduction in the mackerel icefish (Champsocephalus gunnari) at South Georgia

   underlying cause is probably due to a shortage of krill, an important dietary item for Champsocephalus ... regression and resorption at least two months prior to the normal spawning date. It is concluded that the ...

   Meeting Document : WG-FSA-91/07 : Auteur(s): I. Everson (United Kingdom), K.-H. Kock (Germany), G. Parkes (United Kingdom), D. Cielniaszek and J. Szlakowski (Poland)

10. Factors affecting the number and mortality of seabirds attending trawlers and longliners in the Kerguelen area

    mainly according to the year, the cloud cover and the presence of offal for long-liners. The dumping of ... season whereas it was the reverse situation for giant petrels and cape petrels. Four species of birds ... successful with an overall figure of 0.47 birds / 1.000 hooks. No albatross except one was caught when the ... long-liner only for black-browed albatrosses. Most birds killed by trawlers were caught by the netsonde ...

    Meeting Document : WG-FSA-99/26 : Auteur(s): H. Weimerskirch, D. Capdeville and G. Duhamel (France)

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