Résultats de la recherche

1. Diets of sympatrically breeding Adélie, gentoo and chinstrap penguins from Admiralty Bay, South Shetland Islands, Antarctica, 1981 to 2000

   among the three species in the years of high versus low food loads. Adélie and chinstrap penguin adults ... experienced significant declines in body weight during the chick provisioning period in several of the latter ... Living Resources (AMLR) marine surveys in the area. Finally, we examined the digested portion of the ... stomach contents and noted a significant increase in the proportion of digested versus fresh stomach ...

   Meeting Document : WG-EMM-03/29 : Auteur(s): W.Z. Trivelpiece (USA), K. Salwicka (Poland) and S.G. Trivelpiece (USA)

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

   offspring production. Uncertainty in the measurement of metabolic rate led to a positive bias in the mean ... amount of food consumed. Uncertainty in most other variables had little influence on the estimated food ... algorithm showed that the seasonal demand for food peaked in both species in the second half of the breeding ... occurred in both species during the first half of the breeding season. 5. As both Antarctic fur seals and ...

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

3. Short note: Time series of Drake Passage Oscillation Index (DPOI) during 1952-2008 and its possible influence on environmental variability

   Abstract:  An assessment of the environmental processes influencing variability in the recruitment ... krill recruitment and density in the Antarctic Peninsula area with an environmental factor; strength of ... and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... affects the Antarctic marine ecosystem as a whole. Naganobu et al. (1999) had assessed variability in ...

   Meeting Document : WG-EMM-08/33 : Auteur(s): M. Naganobu, J. Kondo and K. Kutsuwada (Japan)

4. ACOUSTIC IDENTIFICATION AND SIZE ESTIMATION OF EUPHAUSIIDS

   behaviour, measure target strength in situ, and of course verify the acoustic measurements biologically ... Abstract:  Fishery for krill is a major economical activity in the Antarctic Ocean. The increased ... Norwegian fishery inherently gives Norway a responsibility to contribute to the management of the marine ... resources in the southern ocean. During the International Polar Year 2008, RV “G.O. Sars” spent 3 months in ...

   Meeting Document : SG-ASAM-09/08 : Auteur(s): R. Korneliussen and G. Skaret (Norway)

5. At-sea distribution and prey selection of Antarctic petrels and commercial fisheries

   the non-breeding season. In a second step, we described the length frequency distribution of Antarctic ... like seabirds. In the Southern Ocean, there is an extensive fishery for Antarctic krill Euphausia ... the ones breeding far away and that disperse during the non- overlap between the distribution of the ... Antarctic krill fisheries and the distribution of a krill dependent seabird, the Antarctic petrel ...

   Meeting Document : WG-EMM-16/P15 : Auteur(s): S. Descamps, A. Tarroux, Y. Cherel, K. Delord, O.R. Godø, A. Kato, B.A. Krafft, S.-H. Lorentsen, Y. Ropert-Coudert, G. Skaret and Ø. Varpe

6. Linking acoustic scattering coefficient to krill fishery data: feasibility of estimating krill abundance using fishing survey

   higher than average catch of night trawls. The average thickness of krill swarm in the daytime was ... Abstract:  Antarctic krill (Euphausia superba Dana) is a key species in the Southern Ocean ... fisheries. In this paper, using the multi-frequency acoustic data and the fishery data, the relationship ... between the acoustic scattering coefficient of krill swarms and catch, catch per unit effort (CPUE), catch ...

   Meeting Document : WG-EMM-17/44 : Auteur(s): T. Wang, G.P. Zhu, J.F. Tong and L.X. Xu

7. Spectra analysis of Drake Passage Oscillation Index (DPOI) from 1952 to 2003, Antarctica

   Abstract:  An assessment of the environmental processes influencing variability in the recruitment ... , Argentina, and Base Esperanza, at the tip of the Antarctic Peninsula, sea ice cover and chlorophyll-a in the ... and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... affects the Antarctic marine ecosystem as a whole. Naganobu et al. (1999) had assessed variability in ...

   Meeting Document : WG-EMM-04/46 : Auteur(s): M. Naganobu and K. Kutsuwada (Japan)

8. An attempt to derive a composite index of abundance from acoustic surveys and fishery data

   distribution of fishing effort in the Chilean krill fishery indicate an area of high krill density wrapping ... around the northwestern end of Elephant Island during the austral summer of 1992. In this area, the ... . In addition, the data suggest that the abundance of krill in the Elephant Island area can change ... the shelf break north of Elephant Island, particularly in the area where it wraps around the western ...

   Meeting Document : WG-Krill-94/14 : Auteur(s): R.P. Hewitt (USA), V. Marín (Chile) and D. Demer (USA)

9. Relative selectivity of four sampling methods using traps and trawls for male snow crabs (Chionoecetes opilio)

   deployed during the day. and (4) bottom trawl deployed at night. Catches were characterized in terms of ... , were larger than those caught in the trawl; the size of crabs caught in the trawl at night was larger ... than those caught during the day; 2) large-clawed crabs predominated in the catches from traps whereas ... small-clawed animals predominated in the trawl catches; 3) soft-shell crabs were more common in trawl ...

   Meeting Document : WS-CRAB-93/11 : Auteur(s): J.M. Hoenig and E.G. Dawe (USA)

10. AN ECOSYSTEM-BASED MANAGEMENT PROCEDURE FOR KRILL FISHERIES: A METHOD FOR DETERMINING SPATIALLY-STRUCTURED CATCH LIMITS TO MANAGE RISK OF SIGNIFICANT LOCALISED FISHERIES IMPACTS ON PREDATORS.

    of predator-prey dynamics beyond that evident in the data. It is a natural extension of the current ... advice can be updated as improvements are made in any component of the procedure, including the provision ... . This framework formalises the decisions that need to be made in dealing with an ensemble of food web ... management system that can ensure CCAMLR is able to respond to trends in the status of the ecosystem ...

    Meeting Document : WG-SAM-08/16 : Auteur(s): A. Constable and S. Candy (Australia)

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