Résultats de la recherche

1. ENVIRONMENTAL FORCING AND SOUTHERN OCEAN MARINE PREDATOR POPULATIONS: EFFECTS OF CLIMATE CHANGE AND VARIABILITY

   potentially the location where the most rapid climate change is most likely to happen, particularly in the ... include changes to the long interdecadal background signals such as the development of the El Niño ... best predictor of biological responses over longer time-scales. Around the Southern Ocean, marine ... predator populations show periodicity in breeding performance and productivity, with relationships with the ...

   Meeting Document : WG-EMM-08/P06 : Auteur(s): P.N. Trathan, J. Forcada and E.J. Murphy

2. Diet composition of Antarctic toothfish

   muscle tissue of Antarctic toothfish, bycatch specimen and icefish in the stomachs indicated a trophic ... connection between the toothfish and icefish. In this study, similarities in the δ13C values δ15N values of ... Abstract:  To identify the important prey items for pre-recruit Antarctic toothfish in the SSRUs ... fishing vessel. In the previous studies, similarities in total FA compositions and the FA profiles in ...

   Meeting Document : WG-FSA-16/06 : Auteur(s): Delegation of the Republic of Korea

3. Predicting distribution and relative abundance of mid-trophic level organisms using oceanographic parameters and acoustic backscatter

   Abstract:  Data on the distribution and abundance of mid-trophic level organisms (MTLOs) in the ... predicted backscatter reasonably well in the Pacific sector of the SO, and in an independent dataset in the ... distribution of MTLOs in other parts of the SO. Author(s):  P.C. Escobar-Flores, R.L. O’Driscoll and J.C ... proxy for MTLO abundance in the epi- and mesopelagic zones. Boosted regression trees and generalised ...

   Meeting Document : WG-EMM-18/P07 : Auteur(s): P.C. Escobar-Flores, R.L. O’Driscoll and J.C. Montgomery

4. Laboratory target strength measurements of free swimming Antarctic krill (Euphausia superba)

   enabling the estimation of threshold induced bias in the target strength estimates. The threshold induced ... were in the range of [-0.84,-0.33] dB. An error analysis of the target strength estimates detailing the ... single animal insonifications. For mean length classes in the range [29.6, 36.2] mm the median single ... freely in the tank triggering the data acquisition system when generating a back scattered signal larger ...

   Meeting Document : WG-EMM-97/75 : Auteur(s): Pauly, T., Penrose, J.D.

5. A simulation study of krill fishing by an individual Japanese trawler

   response of the index, or a response rather smaller in relative magnitude than the biomass decline. Catch ... confidence will warrant being placed in the results from a simulation model of the fishery. Author(s):  D.S ... Abstract:  A model is set up for the operation (which includes both searching and fishing) of a ... Japanese krill trawler over a half-month period, and the output is compared to statistics from a sample of ...

   Meeting Document : SC-CAMLR-VI/BG/38 : Auteur(s): D.S. Butterworth (United Kingdom)

6. 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)

7. 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)

8. 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)

9. 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)

10. 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

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