Résultats de la recherche

1. Interaction between oceanography, krill and baleen whales in the Ross Sea and adjacent waters, Antarctica in 2004/05

   depth (ITEM-200). Distribution of ITEM-200 was used as background information for comparing with ... whales (Megaptera novaeangliae) mainly distributed in the Antarctic Circumpolar Current (ACC) waters with ... extended in ASW. Antarctic minke whales (Balaenoptera bonaerensis) mainly distributed in ASW and SW with a ... distributions of krill and baleen whales with ITEM-200 could yield quantitative information to identify the ...

   Meeting Document : WG-EMM-07/07 : Auteur(s): M. Naganobu, S. Nishiwaki, H. Yasuma, R. Matsukura, Y. Takao, K. Taki, T. Hayashi, Y. Watanabe, T. Yabuki, Y. Yoda, Y. Noiri, M. Kuga, K. Yoshikawa, N. Kokubun, H. Murase, K. Matsuoka and K. Ito (Japan)

2. Modelling the impact of krill fishing on seal and penguin colonies

   with the foraging area of land-based predators such as seals and penguins in the Antarctic Peninsula ... ) are necessary given that there is a flux of krill through this region with its islands habited by ... spatial modelling framework that could be used to couple flux estimates with estimates of removals by both ... features with the Antarctic Peninsula ecosystem in that there is a substantial advective flux of either ...

   Meeting Document : WG-EMM-05/14 : Auteur(s): É.E. Plagányi and D.S. Butterworth (South Africa)

3. Marine debris, entanglements and hydrocarbon soiling at Bird Island and King Edward Point, South Georgia, Signy Island, South Orkneys and Goudier Island, Antarctic Peninsula, 2010/11

   Island. In total, 177 items of marine debris were found in association with seabird colonies at Bird ... Island, with the highest overall number (80 items) associated with grey-headed albatrosses, and the ... highest incidence of fishery-related debris (39 items) associated with wandering albatrosses. No ... 2009/10. Debris associated with seabird colonies was below the mean level in wandering albatross and ...

   Meeting Document : SC-CAMLR-XXX/BG/05 : Auteur(s): Delegation of the United Kingdom

4. A RE-APPRAISAL OF THE TOTAL BIOMASS AND ANNUAL PRODUCTION OF ANTARCTIC KRILL

   production are still very uncertain. Recently, circumpolar krill databases, combined with growth models and ... abundance of 8x1014 postlarvae with biomass of 379 million tonnes (Mt). These values are based on a ... of relative krill density around Antarctica with the most recent, acoustics-derived, value for the ... the total stock, with total biomass of ~133 Mt in January-February 2000. Gross postlarval production ...

   Meeting Document : WG-EMM-08/17 : Auteur(s): A. Atkinson (United Kingdom), V. Siegel (Germany), E.A. Pakhomov (South Africa), M.J. Jessopp (United Kingdom) and V. Loeb (USA)

5. Diet and trophic niche of Macrourus spp. (Gadiformes, Macrouridae) in the Ross Sea region of the Southern Ocean

   . Overall, amphipods were the dominant prey found in Macrourus spp. stomachs with an index of relative prey ... carnivorous. Other important prey were copepods (especially for fish with total length less than 30 cm), krill ... opisthopterus). Minor prey found in stomachs included isopods, mysids, salps and polychaetes, with rocks and ... ) were generally consistent with stomach contents. Carbon isotope results (δ13C =-24.7±0.8‰) were ...

   Meeting Document : WG-EMM-12/P03 : Auteur(s): M.H. Pinkerton, J. Forman, D.W. Stevens, S.J. Bury and J. Brown

6. Impacts of rising sea temperature on krill increase risks for predators in the Scotia Sea

   effects of ocean warming on krill biomass were strongest in the northern Scotia Sea, with a ≥ 40% decline ... below an established depletion threshold (75% of its unimpacted level), with consequent risks for some ... unimpacted level, with up to a 50% chance of falling below the depletion threshold. Simulated krill fishing ... offset the increased risks associated with ocean warming in our model to some extent. These results ...

   Meeting Document : WG-EMM-18/P02 : Auteur(s): E.S. Klein, S.L. Hill, J.T. Hinke, T. Phillips and G.M. Watters

7. A preliminary model-based approach for estimating natural mortality of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region

   single value for males and females combined, with a uniform prior within the base model used in 2017 for ... Antarctic toothfish in the Ross Sea region. The model MCMCs estimated M =0.11 y-1 (0.09–0.13 y-1) with B0 ... mortality was lower and estimated the precautionary yield higher (3419 t compared with 3258 t). MPD ... estimated with relatively high precision and with no bias. Further investigations will need to be carried ...

   Meeting Document : WG-SAM-2019/04 : Auteur(s): B. Moore, S. Mormede, S. Parker and A. Dunn

8. Marine debris, entanglements and hydrocarbon soiling at Bird Island and King Edward Point, South Georgia, Signy Island, South Orkneys and Goudier Island, Antarctic Peninsula 2018/19

   gazella) were observed at Bird Island and two at King Edward Point with no marine mammal entanglements ... with seabird colonies at Bird Island, most commonly in association with wandering albatrosses (35 items ... ; 43 %). One incidence of an entangled wandering albatross (Diomedia exulans) was reported; a bird with ... entanglements was below the long-term mean at all sites surveyed. Debris associated with seabird colonies was ...

   Meeting Document : SC-CAMLR-38/BG/28 : Auteur(s): Delegation of the United Kingdom

9. Bioregionalisation and spatial ecosystem processes in the Ross Sea region

   Spatial Ecosystem Processes international expert workshop, tasked with assembling and analysing available ... spatial management design, consistent with CCAMLR endorsed methods. The workshop met for five days and was ... attended by twenty-one international experts with a range of relevant expertise. Analytical methods were as ... validated with reference to expert knowledge and spatial biological data, with additional expert ...

   Meeting Document : WG-EMM-10/30 : Auteur(s): B.R. Sharp, S.J. Parker, M.H. Pinkerton (New Zealand) (lead authors) also B.B. Breen, V. Cummings, A. Dunn (New Zealand), S.M. Grant (United Kingdom), S.M. Hanchet, H.J.R. Keys (New Zealand), S.J. Lockhart (USA), P. O’B. Lyver, R.L. O’Driscoll, M.J.M. Williams, P.R. Wilson (New Zealand)

10. Descriptive analysis of acoustic data collected during the 2003 exploratory fishery for toothfish in the Ross Sea

    recordings could be compared with longline catches. Data quality was generally good. Of the 84 line ... recordings, 68 were considered suitable for acoustic analysis. Poor data quality was associated with strong ... issues with data quality were interference from another echosounder, and the occurrence of a double ... deadzone would be over 50 m high for a sea-bed with a slope of 20º. The problem of the acoustic deadzone ...

    Meeting Document : WG-FSA-03/28 : Auteur(s): R.L. O’Driscoll and G.J. Macaulay (New Zealand)

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