Résultats de la recherche

1. Demography of Antarctic krill in the Lazarev Sea (Subarea 48.6) and the Elephant Island area (Subarea 48.1) in 2004

   -year- old (R1) and two-year-old krill (R2) were calculated for both areas, showing low values for R1 ... discussed for the Lazarev Sea. Information are given on the development of maturity stages and “re ... and high, but different values for R2. Spatial distribution of krill density and size/age classes is ... larvae are provided for the Lazarev Sea. Author(s):  V. Siegel (Germany), V. Loeb (USA), B. Bergström ...

   Meeting Document : WG-EMM-04/23 : Auteur(s): V. Siegel (Germany), V. Loeb (USA), B. Bergström (Sweden), S. Schöling (Germany), M. Haraldsson (Sweden), J. Kitchener (Australia), M. Vortkamp (Germany)

2. Long-term changes in the size composition of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, after the 1978–1980 fishery in the area

   Abstract:  Fish samples collected through an overall period of 24 years at Potter Cove after the ... 1986/7 and the duration of the inshore phase of the species, which is known to last for 6-7 years. In ... reported for the period 1983- 1991/2 is consistent with the increase in mean size observed between 1983 and ... years. After 1991/92 the densities, mean sizes and abundances do not depend on a single forcing event ...

   Meeting Document : WG-FSA-07/52 : Auteur(s): E.R. Marschoff, E.R. Barrera-Oro and N.S. Alescio (Argentina)

3. Spatial and seasonal distribution of adult Oithona similis in the Southern Ocean: predictions using boosted regression trees

   of the cyclopoid copepod Oithona similis in the Southern Ocean. Nearly 20 000 samples from the ... waters. We demonstrate that it is possible to obtain reasonable models for both the presence (area under ... , with surface abundances 20% higher at night than during the day. There was no evidence of diel ... Scotia Sea, two areas off east Antarctica, in the frontal zone north of the Amundsen Sea, and a small ...

   Meeting Document : WG-EMM-10/P14 : Auteur(s): M.H. Pinkerton, A.N.H. Smith, B. Raymond, G.W. Hosie, B. Sharp, J.R. Leathwick and J.M. Bradford-Grieve

4. Age determination of the Antarctic fishes Champsocephalus gunnari and Notothenia rossii from South Georgia

   necessity for an errorless estimation of age. Age determination can provide basic life history information ... 55 cm in 7 years. The lack of: the large size groups for Notothenia rossii may be indicative of over ... a fish's past history. As part of an effort to study Antarctic fish growth and population ... fishing and that only the younger age groups are available for harvest. It appears that length at age data ...

   Meeting Document : SC-CAMLR-VI/BG/43 : Auteur(s): R. Radtke (USA)

5. CCAMLR 2000 revisited

   %), depending on whether two- or three-frequencies are used for krill identification, respectively. At 38 kHz ... Abstract:  The total abundance of krill in the Scotia Sea was estimated from an international ... Antarctic Treaty's Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) to ... revise the precautionary catch level for krill in the area from 1.5 to 4 Mt (SC-CAMLR, 2000). By ...

   Meeting Document : WG-EMM-07/30 Rev. 1 : Auteur(s): D.A. Demer, A.M. Cossio and C.S. Reiss (USA)

6. Conservation of Antarctic pack-ice seals with increasing krill fishing and environmental change

   suitable seal habitat has declined between 21 and 28% over a 30 year period; krill density has potentially ... could be an area of expansion for the fishery in the future. Uncertainty in krill and seal stock trends ... impact on an already highly variable krill biomass, sea-ice loss of 66% has already occurred, and it ... data to support a management based on specific conservation objectives for pack-ice seals. Author(s ...

   Meeting Document : WS-MPA-11/24 : Auteur(s): J. Forcada, P.N. Trathan (UK), P.L. Boveng (USA), I.L. Boyd (UK), D.P. Costa (USA), M. Fedak (UK), T.L. Rogers and C.J. Southwell (Australia)

7. Competition-induced starvation drives large-scale population cycles in Antarctic krill

   Abstract:  Antarctic krill (Euphausia superba)—one of the most abundant animal species on Earth ... —exhibits a five to six year population cycle, with oscillations in biomass exceeding one order of magnitude ... , we identify intraspecific competition for food as the main driver of the krill cycle, while external ... , with drastic consequences for the entire Antarctic ecosystem. Author(s):  A.B. Ryabov, A.M. de Roos, B ...

   Meeting Document : WG-EMM-18/P05 : Auteur(s): A.B. Ryabov, A.M. de Roos, B. Meyer, S. Kawaguchi and B. Blasius

8. Estimating nest-level phenology and reproductive success of colonial seabirds using time-lapse cameras

   Abstract:  We wish to draw the attention of Members to an online application of the R code ... ) implements  the methods of the paper and provides summary outputs for direct input to CEMP A6b and A9 eforms ... reproductive success is important for seabird conservation and management, but can be logistically challenging ... in remote regions. Autonomous time-lapse camera systems offer an opportunity to provide such coverage ...

   Meeting Document : WG-EMM-18/P01 : Auteur(s): J.T. Hinke, A. Barbosa, L.M. Emmerson, T. Hart, M.A Juáres, M. Korczak-Abshire, G. Milinevsky, M. Santos, P.N. Trathan, G.M. Watters and C. Southwell

9. Baited Remote Underwater Video (BRUV) system to monitor Antarctic toothfish distribution and abundance: pilot study results and future design

   the tool and an approach for a robust sampling design, to obtain valid information on the relations ... Abstract:  The Antarctic toothfish (Dissotichus mawsoni) is an ecologically and commercially ... collect samples, which does not cover all the areas of its distribution. Here we want to promote an ... expect from the FSA group suggestions and the support of the design, to make it available for all the ...

   Meeting Document : WG-FSA-18/62 : Auteur(s): D. Di Blasi, S. Canese, E. Carlig, L. Ghigliotti, S.J. Parker and M. Vacchi

10. Recommandation : engager des discussions sur un moyen de planifier et d'organiser les travaux de la Commission pour la conservation de la faune et la flore marines de l'Antarctique (CCAMLR)

    Abstract:  In recent years, there has been an increase in the number and complexity of issues that ... Commission initiate discussions on this topic, including by considering options for undertaking a priority ... options, including proposals for a priority-setting exercise, with a view to the Commission agreeing on a ... on a way to plan and organise the work of the Commission for the Conservation of Antarctic Marine ...

    Meeting Document : CCAMLR-XXXIV/18 : Auteur(s): Delegation of Australia

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