Résultats de la recherche

1. Flexible foraging strategies of gentoo penguins help buffer the impacts of inter-annual changes in prey availability

   Abstract:  Gentoo penguins Pygoscelis papua show considerable plasticity in their diet, diving and ... single site, since flexible foraging habits would provide a buffer against changes in prey availability ... . We examined inter-annual changes in the foraging strategies and diet of gentoo penguins in the South ... varied over time; different dive depth-distributions were observed in each year. Nonetheless, chick ...

   Meeting Document : WG-EMM-08/50 : Auteur(s): A.K. Miller and W.Z. Trivelpiece (USA)

2. Validation of age determination in Notothenia coriiceps, by means of a tag-recapture experiment at potter cover, South Shetland Islands

   Shetland Islands, in successive years from 1989 to 1992, 9 were recaptured at the same site after periods ... of 11-21 months. A comparison was carried out between the annuli found in scales removed before and ... after the period of liberty. In scales of those specimens recovered after 11-13 months, one extra ... annulus was laid down. The same analysis in one individual recovered after 21 months resulted in 2 extra ...

   Meeting Document : WG-FSA-94/12 : Auteur(s): E.R. Barrera-Oro and R.J. Casaux (Argentina)

3. A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on recent survey results

   Abstract:  The annual Random Stratified Trawl Survey was undertaken in Division 58.5.2 in the ... ’ E using standard CCAMLR methods. A pattern of 5 year classes being present simultaneously in the ... population, which was first detected in 2011, has persisted, however a large cohort of fish, estimated to be ... 2+, dominate the population in both abundance and biomass. A new length weight model is estimated ...

   Meeting Document : WG-FSA-12/26 : Auteur(s): D.C. Welsford (Australia)

4. Operational difficulties in exploratory fisheries

   Abstract:  F/V Shinsei Maru No.3 has been engaged in Exploratory Fisheries since 2003. Furthermore ... the vessel has conducted research activities under CM24-01 in division 58.4.4 since 2008 and provided ... significant scientific information on toothfish. For the rational utilization of toothfish resources in data ... we have exerted as much efforts as possible to complete our research plan. However, in course of ...

   Meeting Document : WG-SAM-13/22 : Auteur(s): N. Miyagawa, J. Okamoto, N. Akimoto and K. Hirose (Japan)

5. Nine years of tag-recapture in CCAMLR Statistical Subarea 48.3 – Part II: Spatial movement and analysis

   toothfish (Dissostichus eleginoides) in Subarea 48.3. In addition to providing information on tagging ... procedure, Patagonian toothfish biology, growth and local movement of Patagonian toothfish in 48.3 ... (presented in WG-SAM-14/35), it describes the spatial movements and regional connectivity in Subarea 48.3 ... successful in providing substantial information for the stock assessment and that it can give a first ...

   Meeting Document : WG-FSA-14/49 : Auteur(s): M. Soeffker, C. Darby and R.D. Scott (United Kingdom)

6. Progress report of the CEMP Special Fund camera network in Subarea 48.1

   Network in Subarea 48.1”. The project was initiated with support from the CEMP Special Fund in 2014/15 ... . The project is now fully operational.  In 2016/17 data were recovered from 50 cameras covering 3 ... summaries indicate variation in phenological timing within species across sites with relatively high ... publication is currently in preparation. The cameras in the network remain in deployment and will contribute ...

   Meeting Document : WG-EMM-17/16 Rev. 1 : Auteur(s): J. Hinke, G. Watters, M. Santos, M. Korczak-Abshire, G. Milinevsky, V. Lytvynov, A. Barbosa, C. Southwell and L. Emmerson

7. ESTIMATION OF MANAGEMENT REFERENCE POINTS CONSISTENT WITH THE CATCH TRIGGER LEVEL FOR THE ANTARCTIC KRILL FISHERY IN AREA 48

   biomass reference points for the krill fishery in CCAMLR Area 48 consistent with the catch trigger level ... of F and SSB reference points for the krill stock in Area 48 consistent with the catch trigger level ... are 0.0159 (95 % CIs: 0.00750 – 0.0357) and 97.7 % SSB0 (80 % CIs: 71.6 – 135 %) respectively. In ... increases substantially with increased recruitment variability, though in absolute terms remains negligible ...

   Meeting Document : WG-EMM-11/17 : Auteur(s): T. Peatman, J. Moir Clark, D.J. Agnew (UK)

8. Managing ecosystem uncertainty: critical habitat and dietary overlap of top-predators in the Ross Sea

   Abstract:  We summarize three types of data in order to increase appreciation among fishery ... managers of the close spatial and temporal ecological overlaps among top predators in the Ross Sea Shelf ... whale, though other species might also soon be exploited in the Ross Sea region. In addition to those ... two predators we also include other trophic competitors and (and in two cases predatory species ...

   Meeting Document : WG-EMM-06/29 : Auteur(s): Testa, J.W., Stewart, B.S., Olmastroni, S., Lyver, P., Karl, B., Eastman, J., Barton, K., Ballard, G., Toniolo, V., Wilson, P., Ainley, D.

9. Krill distribution and biomass variability within Subarea 48.3 in June 1991

   in an 8 x 6 mile micropolygon, where eight consecutive hydroacoustic surveys were carried out. Krill ... were of 30 m in length, with density up to 200 g/m3. About 75% of all swarms revealed biomass to be ... less than 1 tonne. Average statistical parameters of swarms in the polygon varied insignificantly from ... 1 554 units. Krill biomass in the polygon varied spasmodically within the range from 1 091 to 6 085 ...

   Meeting Document : WG-KRILL-93/35 : Auteur(s): S.M. Kasatkina, E.N. Tymokhin, P.P. Fedulov and K.E. Shulgovskiy (Russia)

10. GIS ‘ChartMaster’ for aquatic living resources research in Antarctic

    Abstract:  Geographic Information Systems (GIS) find increasing application in different fields of ... and abundance; to estimate the instant biomass in the surveyed area; to carry out the survey planning ... and designing; to carry out adaptive planning during the survey in order to localize and outline the ... for studying aquatic living resources in the Antarctic waters: The Chart of possible catches of ...

    Meeting Document : WG-SAM-13/04 : Auteur(s): V.A. Bizikov, S.M. Goncharov, A.V. Polyakov, S.B. Popov and A.F. Petrov (Russia)

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