Résultats de la recherche

1. Adélie penguin population change in the pacific sector of Antarctica: relation to sea-ice extent and the Antarctic Circumpolar Current

   on Ross Island, Ross Sea, 1959 to 1997. The sizes of these colonies have displayed significant ... physical environmental factors during that part of the record with comparable sea-ice satellite imagery ... from 1973 to 1997. The Ross Sea sector of the Southern Ocean lying north of Ross Island, from 150° E to ... , and inversely, by the extent of sea-ice in the study area 5 winters earlier, and in some way related ...

   Meeting Document : WG-EMM-01/23 : Auteur(s): P.R. Wilson (New Zealand), D.G. Ainley, N. Nur, S.S. Jacobs (USA), K.J. Barton (New Zealand), G. Ballard and J.C. Comiso (USA)

2. Oceanic debris observations in the southern ocean whale sanctuary, from Antarctic Peninsula to the Ross Sea: December 1994 to March 1995

   start and finish of the expedition, especially near the Antarctic Convergence south of the Tasman Sea ... Peninsula, and north and northwest of the Ross Sea, and consisted mostly of plastic Items, especially ... Ross Sea, whereas non-penguin feathers dominated north and northwest of the Ross Sea. In the southern ... Ross Sea a single sample contained 31 small dead fish. Natural mesolitter quantities were usually low ...

   Meeting Document : SC-CAMLR-XVI/BG/29 : Auteur(s): ASOC Observer

3. Network characterisation of the food-web of the Ross Sea, Antarctica

   food-web of the Ross Sea shelf and slope before the advent of commercial fishing for Antarctic ... , i.e. the whole Ross Sea shelf and slope area, averaged over a typical year, and in 35 trophic groups ... not resolved by this analysis. The Ross Sea food-web is a partially inverted biomass pyramid with a ... the total living biomass in the Ross Sea (bacteria excluded). The six groups with the highest ‘indices ...

   Meeting Document : WG-EMM-12/53 : Auteur(s): M.H. Pinkerton and J.M. Bradford-Grieve (New Zealand)

4. The relationship between sea-ice cover and Adélie penguin reproductive performance at Béchervaise Island

   between sea-ice and penguin populations based on data from multiple sites to predict the likely outcome of ... population growth in response to a reduction in the frequency of heavy sea-ice years. However, it is ... the form of sea-ice present, the season in which it is present and the processes that such sea-ice ... between sea-ice and Adélie penguin reproductive performance, we investigate the relative importance of ...

   Meeting Document : WG-EMM-07/21 : Auteur(s): L. Emmerson and C. Southwell (Australia)

5. Predation release of Antarctic silverfish in the Ross Sea: how sensitive is the conclusion to uncertainties in the diet of Antarctic toothfish over the shelf?

   adeliae) at breeding colonies in the southern Ross Sea more than doubled from about 235 000 to more than ... , consumption rates and diets of toothfish and Adélie penguins over the Ross Sea shelf as a first test of the ... weight of prey) over the southern Ross Sea shelf, including in McMurdo Sound (0.4–6.4%W) and Terra Nova ... as part of the sub-adult Ross Sea survey. The mass of silverfish estimated as being released from ...

   Meeting Document : WG-FSA-15/41 : Auteur(s): M.H. Pinkerton, P. O’B. Lyver, D.W. Stevens, J. Forman, R. Eisert and S. Mormede (New Zealand)

6. Methodology for automated spatial sea ice summaries in the Southern Ocean

   Abstract:  Sea ice is recognised as a core driver of both ecosystem dynamics and fishery ... performance in the Southern Ocean. Sea ice can limit access to fishing grounds, for both commercial fishing ... sea ice concentration data in the Southern Ocean, and relate it to data on commercial fishing vessel ... dynamics of sea ice in a target location for a specified period, and a temporal view is used to ...

   Meeting Document : WG-FSA-14/54 : Auteur(s): S.J. Parker, S.D. Hoyle, J.M. Fenaughty and A. Kohout (New Zealand)

7. Comparison between the CCAMLR-2000 and KY 1988 surveys on environmental variability of krill in the Scotia Sea, Antarctica

   Japanese R/V Kaiyo Maru Survey in the 1987/88 austral summer season in the Scotia Sea. There were distinct ... differences between the 2000 and 1987/88 Surveys with regard to sea ice extent, oceanographic structure and ... krill distribution. The sea ice cover in 1987/88 extended northward widely during the last winter season ... such that sea ice remained around the South Orkney Islands until December 1987. In contrast, the sea ...

   Meeting Document : WG-EMM-02/43 : Auteur(s): M. Naganobu (Japan), M. Brandon (United Kingdom), K. Ito, K. Segawa (Japan) and V. Siegel (Germany)

8. Ross Sea Bioregionalisation, Part II: Patterns of co-occurrence of mesopredators in an intact polar ocean ecosystem

   Abstract:  We report results of analyses of niche occupation among mesopredators in the Ross Sea ... ) and 3) diet. Species included were: Antarctic Minke Whale, Ross Sea Killer Whale (ecotype C ... localities from at-sea surveys and other sources. A machine learning, “maximum entropy” modeling algorithm ... use of the Ross Sea were apparent: 1) Shelf Break: restricted mostly to the shelf break, which ...

   Meeting Document : WG-EMM-10/12 : Auteur(s): G. Ballard, D. Jongsomjit and D.G. Ainley (USA)

9. Dynamics of Antarctic penguin populations in relation to inter-annual variability in sea-ice distribution

   Abstract:  To investigate the role of sea ice cover on penguin populations we used principal ... regional (from remote sensing data) sea ice variables. Throughout the study period, the Adélie penguin ... or breeding success and the local sea ice conditions. However, the regional sea ice extent at a ... breed. For both species, this period occurred before the sea ice reached its maximum extent and was ...

   Meeting Document : WG-EMM-96/10 : Auteur(s): Murphy, E.J., Croxall, J.P., Trathan, P.N.

10. Commercial fishing in the Ross Sea

    Abstract:  COLTO members have been fishing for toothfish in the Ross Sea for the past 15 years ... operations in the Ross Sea region.    The information sheet provides basic data on Antarctic Toothfish ... currently exist in the Ross Sea. It also highlights some of the findings of Ross Sea independent research ... toothfish through the Ross Sea region, and little or no impacts on dependent species and the ecosystem ...

    Meeting Document : CCAMLR-XXXI/BG/35 : Auteur(s): Submitted by COLTO

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