Résultats de la recherche

1. Modelling the dynamics of krill populations in the Antarctic Peninsula region

   estimates of recruitment to the population can be used to model in detail interannual variation in the ... dynamics of krill are used to assess to what extent they can explain the observed changes in the density of ... the population in the Antarctic Peninsula region. Two approaches have been explored: the first uses ... (?43% per annum). In both cases however the mortality rate estimate is poorly constrained in a range ...

   Meeting Document : WG-EMM-99/56 : Auteur(s): E.J. Murphy (United Kingdom), A. Constable (Australia) and D. Agnew (United Kingdom)

2. Investigations on midwater trawling for krill (Euphausia superba) in the Southern Ocean

   Abstract:  Results of harvesting operations for Antarctic krill (Euphausia superba) in Fishing ... Area 58 in the Indian Ocean Sector of Southern Ocean, during the First Indian Antarctic Krill ... Expedition (27 December 1995- 10 March 1996) on board FORV Sagar Sampada are summarised in this paper. 18 ... hauls were made using a 2.5 m Isaacs-Kidd Midwater Trawl (IKMT) in the area 59°00’-61°08' S lat; 30 ...

   Meeting Document : WG-EMM-98/38 : Auteur(s): M.R. Bhoopendranath, M.K.R. Nair, A. Anrose and V.C. George (India)

3. Concordance of inter-annual fluctuations in densities of krill around South Georgia and Elephant Islands: biological evidence of same-year teleconnections across the Scotia Sea

   Abstract:  Acoustic estimates of the densities of Antarctic krill, Euphausia superba, in areas ... simply have been a function of differences in survey and data analysis techniques used at each site. More ... both SG and El. There was no apparent lag in changes in abundance at each site, and ranked between-year ... gradients of change in abundance at both locations were significantly correlated. These pronounced ...

   Meeting Document : WS-AREA 48-98/11 : Auteur(s): A.S. Brierley (UK), D.A. Demer, R.P. Hewitt (USA) and J.L. Watkins (UK)

4. Depth distribution and spawning pattern of Dissostichus eleginoides over the winter period in Subarea 48.3

   Abstract:  Trends in mean length and maturity stage of toothfish were examined using observer data ... from the 1998, 1997 and 1996 toothfish seasons. Toothfish are distributed down the shelf slope in ... statistically significant pattern of changing mean length at depth with month was found in both 1997 and 1998 ... . Examination of maturity data suggests that in addition to a major spawning event in late July/August, there ...

   Meeting Document : WG-FSA-98/58 : Auteur(s): D.J. Agnew, K. Kerkieta, L. Heaps, C. Jones, J. Pearce and A. Watson (United Kingdom)

5. Demonstrating global leadership in marine spatial protection

   Protected Areas at the Institut Paul Emile Victor (IPEV) in Brest, France was held with this imminent ... deadline in mind. While there were many positive outcomes from the workshop, significant work remains to be ... done in a short time. Fortunately, as the report of the workshop recognizes, experience demonstrates ... that progress in developing MPAs can be achieved relatively quickly if there is a dedicated effort to ...

   Meeting Document : CCAMLR-XXX/BG/20 : Auteur(s): Submitted by ASOC

6. Unhappy feet: the reduction of Adélie and chinstrap penguin populations in the West Antarctic Peninsula/Scotia Sea

   ) in the West Antarctic Peninsula/Scotia Sea area. According to this scientific paper, Adélie and ... chinstrap penguin populations have declined more than 50% during the last 30 years at study colonies in the ... South Shetland Islands. This is consistent with the declines in both species throughout the Scotia Sea ... in the abundance of their main prey, Antarctic krill, which is affected by climate change. In this ...

   Meeting Document : CCAMLR-XXX/BG/21 : Auteur(s): Submitted by ASOC

7. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2010–11

   in Subarea 88.1 and for ten years in Subarea 88.2. This report summarises the timing, depth, and ... 1997–98 to 2010–11. During the 2010–11 fishing year most of the catch in Subarea 88.1 came from the ... slope SSRUs 88.1H and 88.1I, and SSRU 88.1K. About 63% of the catch limit in the north was taken from ... time in each of the fisheries showing no trend. There is no evidence of any truncation of the overall ...

   Meeting Document : WG-FSA-11/45 : Auteur(s): M.L. Stevenson, S.M. Hanchet, S. Mormede and A. Dunn (New Zealand)

8. SPATIAL PATTERNS IN MACKEREL ICEFISH DIET PROVIDES INSIGHTS INTO KRILL ABUNDANCE AND DISTRIBUTION

   South Georgia and Shag Rocks shelves in January 2009. The results show that the diet of this normally ... low in Antarctic krill (7 % IRI) compared with similar data for the same month in 2004-2006. The ... occurrence of krill in the diet with earlier data sets (1967-1992) show that 2009 is not unique, as similarly ... poor krill years occurred in 1969, 1978 and 1991. Spatial analysis of icefish diet indicates ...

   Meeting Document : WG-EMM-09/27 : Auteur(s): M.A. Collins and C.E. Main (United Kingdom)

9. TROPHIC OVERLAP OF WEDDELL SEALS (LEPTONYCHOTES WEDDELLI) AND ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA, ANTARCTICA

   item for Weddell seals in the Ross Sea. • We summarise the life history of Weddell seals to provide an ... prey) will vary between different life history stages at different times of the year in different areas ... evidence that Antarctic toothfish have lower densities near to seal breeding colonies in McMurdo Sound than ... observations, animal-mounted camera information, and observations from field scientists in the McMurdo Sound ...

   Meeting Document : WG-EMM-08/43 : Auteur(s): M.H. Pinkerton, A. Dunn and S.M. Hanchet (New Zealand)

10. DOWN-SCALING FOOSA TO MODEL THE ADMIRALTY BAY PYGOSCELID PENGUIN COLONIES: A WORK IN PROGRESS

    , krill, and environmental variability at the long-term research site in Admiralty Bay, King George Island ... . This work-in-progress serves 2 purposes: 1) to use historical data to estimate parameters in a model ... -fitting framework for the purpose of model validation, and 2) to add and explore functionality in Foosa to ... that Foosa capably captures the general trends in adult abundance at Admiralty Bay with minimal formal ...

    Meeting Document : WG-EMM-08/51 : Auteur(s): J.T. Hinke, G.M. Watters and W.Z. Trivelpiece (USA)

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