Résultats de la recherche

1. The breeding biology and distribution of Adelie penguins: adaptations to environmental variability

   breeding areas by Adelie penguins, following two to three years of failure at "poor" sites ... biomass of the Western Antarctic Peninsula region, and serve as focal animals for our Long Term Ecological ... Research (LTER) study of the effects of environmental variability on animal populations in the Antarctic ... of Adelie penguins in the Southern Ocean are variability in sea ice cover, ocean circulation patterns ...

   Meeting Document : WG-EMM-96/58 : Auteur(s): Fraser, W.R., Trivelpiece, W.Z.

2. The distribution of spatial management and Antarctic krill catch across pelagic bioregions in the Southern Ocean

   provide standardised and accessible information on the location and extent of spatial fisheries management ... measures in the Southern Ocean.  We used the GIS in combination with catch data and the results of the 2007 ... CCAMLR bioregionalisation exercise to examine the relative spatial distribution of fishing activities ... , existing management, and ecological characteristics. Such analysis is a necessary part of systematic ...

   Meeting Document : WG-EMM-12/15 : Auteur(s): S.M Grant, S.L. Hill and P. Fretwell (United Kingdom)

3. Discussion on recent results from an integrated assessment of Antarctic krill (Euphausia superba) in Subarea 48.1

   -assessment framework for Antarctic krill (Euphausia superba) to assimilate multiple sources of survey data ... were pooled at annual, seasonal, and monthly time scales.  The data were from research cruises ... from three of the models provide a robust picture of changes in the krill population.  An annual model ... .  Differences in scaling of biomass estimates between the annual models and the more highly resolved models ...

   Meeting Document : WG-EMM-14/35 : Auteur(s): G.M. Watters, C.S. Reiss and D. Kinzey (USA)

4. Development of a five-year work plan for the CCAMLR Scientific Committee

   Abstract:  At last year’s meeting, it was agreed that a five-year work plan for the Scientific ... , paragraphs 13.8 to 13.20). It was agreed that the work should be led by the Chair of the Scientific Committee ... with input from the conveners of its working groups and that it should be made available for ... the first stage in the development of the five-year work plan and draws on recommendations arising ...

   Meeting Document : WG-EMM-17/02 : Auteur(s): M. Belchier (Chair of SC-CAMLR)

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

   that of annual estimates of breeding population size of Adélie penguins Pygoscelis adeliae at colonies ... Abstract:  One of the longest continuing data sets involving a marine organism in the Antarctic is ... 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 ...

   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)

6. Predation release of Antarctic silverfish (Pleuragramma antarctica) in the Ross Sea

   Abstract:  Between 2001 and 2013 the number of breeding pairs of Adélie penguins (Pygoscelis ... adeliae) at breeding colonies in the southern Ross Sea more than doubled from about 235 000 to more than ... half a million. It has been suggested that predation release of Antarctic silverfish (Pleuragramma ... antarctica) due to fishing of one of its predators, Antarctic toothfish (Dissostichus mawsoni), could have ...

   Meeting Document : WG-EMM-15/53 : Auteur(s): M.H. Pinkerton, P. Lyver, D. Stevens, J. Forman, R. Eisert and S. Mormede (New Zealand).

7. Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longline

   combination of socio-economical, ecological and conservation issues. However, estimating the amount of ... whether they depredate longline hooks separately or simultaneously, this study aimed at providing two ... indirect methods of assessment of depredated biomass over a 11-year period (from 2003 to 2013), both ... accounting for spatial variations of depredation levels. In the first method, we used fishing data from 6 525 ...

   Meeting Document : WG-FSA-14/10 : Auteur(s): N. Gasco, P. Tixier, G. Duhamel and C. Guinet (France)

8. Results of the groundfish survey carried out in CCAMLR Subarea 48.3 in January 2010

   2003/04 of a recent recruitment of evident at Shag Rocks, with presence of putative age 2+ fish (29 ... vessel. Catch-weighted length frequencies of mackerel icefish indicated that although 3+ sized fish ... mean biomass of 52,329 tonnes was estimated for mackerel icefish, with a lower 1-sided 95% CL of 24,334 ... and low availability of krill to mackerel icefish in the area (evidenced by dietary analysis) in 2009 ...

   Meeting Document : WG-FSA-10/38 : Auteur(s): R.E. Mitchell, M. Belchier, S. Gregory, L. Kenny, J. Nelson, J. Brown and L. Feathersone (UK)

9. Revised assessment models for Patagonian toothfish in research block C of Division 58.4.4, Ob & Lena Banks for the years 1989/1990 to 2012/13

   Abstract:  I made five sensitive runs of CASAL models for stock status assessments of Dissostichus ... eleginoides in research block C in Division 58.4.4 b on the assumption of constant year class strength and no ... IUU fishing occurrence in the block. The five models are as follows: 1) catch at length model as ... addition, proportion mature for ages was calculated on the assumption of logistic curve fitting for the ...

   Meeting Document : WG-SAM-14/15 : Auteur(s): K. Taki (Japan)

10. Estimating food consumption of marine predators: Antarctic fur seals and macaroni penguins

    seals and macaroni penguins at the island of South Georgia was 3•84 [coefficient of variation (CV) = 0 ... Abstract:  1. Estimating food consumption is central to defining the ecological role of marine ... , growth, diet, life history and the activity budgets of marine predators to estimate population energy ... requirements and food consumption. 2. Two species of marine predators (Antarctic fur seal Arctocephalus gazella ...

    Meeting Document : WG-EMM-02/23 : Auteur(s): I.L. Boyd (United Kingdom)

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