Résultats de la recherche

1. MULTIPLE INDICATORS SUGGEST A STRONG ECOSYSTEM ANOMALY AT SOUTH GEORGIA IN 2009

   lowest level in over two decades of monitoring. These observations provide support for the idea that ... metrics for birds, seals and fish seems to be connected with the availability of Antarctic krill ... , Euphausia superba, which is a major prey species for many vertebrate populations at South Georgia. The ... krill is a major mediator of climatic effects on the ecosystem. They also suggest that icefish diets, in ...

   Meeting Document : WG-EMM-09/23 : Auteur(s): S. Hill, M. Belchier, M. Collins, S. Fielding, E. Murphy, P. Trathan, H. Venables and C. Waluda (United Kingdom)

2. Distribution and abundance of Antarctic krill in the vicinity of Elephant Island during the 1994 austral summer

   mapped north of King George Island and over a broad band northwest of Elephant Island. For a portion of ... the survey area centered on Elephant Island (aproximate1y 12,000 n. mile2), biomass was estimated to ... during the last five years of AMLR surveys in the Elephant Island study area and one-fifth of the 1990 ...

   Meeting Document : WG-Joint-94/09 : Auteur(s): R.P. Hewitt and D.A. Demer (USA)

3. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data

   ) was examined for the Scotia Sea (South Shetland Islands (SS), South Orkney Islands (SO) and South ... an unbroken sequence. For krill harvesting, midwater trawl nets with a mouth opening of 235.5–1 ... . For the abbreviations of brightness categories see Figure 1. g g Dec. 0 20 40 60 80 NI T DW N ... for each tow in the logbooks from 1998 to 2003, to investigate the intensity of krill feeding on ... phase over the diurnal cycle (i.e. brightness categories) was examined for the Scotia Sea (South ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 163–172 : Auteur(s): Taki, K., T. Hayashi and M. Naganobu

4. Examination of the skate by-catch from around South Georgia from one vessel in the 2000 longline toothfish season

   Abstract:  Two previously recorded species, Raja georgiana and Bathyraja meridionalis were ... other two in deep water. The average catch rate was 0.23 rajids/1000 hooks. Distribution and length at ... recorded as-bycatch on one vessel in the South Georgia toothfish fishery, 2000. One further species could ...

   Meeting Document : WG-FSA-00/59 : Auteur(s): M. Endicott, D. Agnew and C. Nolan (United Kingdom)

5. Biomass of Antarctic krill around South Shetland using 2-dB difference method in April 2016

   Abstract:  Antarctic Krill plays an important role in Antarctic ecosystems as the medium that ... connects phytoplankton to penguins, seals, and whales. It is also in the limelight as an important protein ... source for the future food resource. Since Krill is mainly schooled within 200m depth, mass catching is ... . CCAMLR (Convention for the Conservation of Antarctic Marine Living Resources) is currently implementing a ...

   Meeting Document : WG-EMM-16/60 : Auteur(s): Delegation of the Republic of Korea

6. Physical forcing in the southwest Atlantic: ecosystem control

   physical environment has been recorded since the early part of the last century. For example, ocean ... anomaly data for the El Niño 4 region in the Pacific show that variability at South Georgia also reflects ... correlated with warm anomaly periods, but lagged by a number of months. For some predators the most critical ... periods appear to be prior to the breeding season during the summer and early autumn of the preceding year ...

   Meeting Document : WG-EMM-04/34 : Auteur(s): P.N. Trathan, E.J. Murphy, J. Forcada, J.P. Croxall, K. Reid and S.E. Thorpe (United Kingdom)

7. Short note: time series of Drake Passage Oscillation Index (DPOI) from 1952 to 1988

   generally observed for around 3 years except 6 years between 1958 and 1964. Author(s):  M. Naganobu and K ... 1950s until 1988 at the Web sites of the Carbon Dioxide Information Analysis Centre for Rio Gallegos and ... since the 1940s until 1998 at British Antarctic Survey for Esperanza. Here we calculated a time series ... . A low DPOI less than 10 hPa appeared in 1967 and 1980. Intervals between the years of low DPOI were ...

   Meeting Document : WG-EMM-02/44 : Auteur(s): M. Naganobu and K. Kutsuwada (Japan)

8. Marine debris and entanglements at Bird Island and King Edward Point, South Georgia, Signy Island, South Orkneys and Goudier Island, Antarctic Peninsula 2013–2014

   Island, South Orkneys and at Goudier Island, Antarctic Peninsula for the period April 2013 to March 2014 ... . Debris associated with seabird colonies was below the mean level for wandering albatrosses and grey ... -headed albatrosses but above the mean for black-browed albatrosses and giant petrels. Author(s ... highest ever recorded in the 24 years of summer surveys and fourth highest ever recorded in 23 years of ...

   Meeting Document : SC-CAMLR-XXXIII/BG/31 : Auteur(s): Delegation of the United Kingdom

9. Acoustic estimates of krill abundance at South Georgia, 1981–1998

   of the years between 1990 and 1998 it was possible to calculate separate biomass estimates for the ... Georgia are presented for periods within ten austral summers between 1981 and 1998. This time series ... a primary objective, and estimates derived for the first time here from acoustic data collected as a ... fluctuated widely from year to year over this time, ranging from?2 to? 150 gm-2 (wet weight). The 1982, 1991 ...

   Meeting Document : WS-AREA 48-98/9 : Auteur(s): A.S. Brierley, J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson (UK)

10. Le prix du poisson : Étude de marché mondiale de la légine australe (Dissostichus eleginoides) et antarctique (Dissostichus mawsoni)

    44% from 2007 to 2012 with an overall decrease in traded volume. The USA accounted for 54% of total ... great commercial importance to the 13 nations that actively harvest toothfish for global consumption ... , are managed by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR ... trade of toothfish over the six-year analysis period. The average price ($/kg) of imports increased by ...

    Meeting Document : CCAMLR-XXXIII/BG/14 Rev. 2 : Auteur(s): Secretariat

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