Résultats de la recherche
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Analysis of the sea-ice concentration (SIC) in Subarea 48.6, research blocks 2, 3, 4 and 5 with sea-surface temperature (SST) and statistical models
, where the limit of navigability for fishing vessels is set at 20 % SIC, was calculated. It should become ... , the SIC in 2019 was the highest for the last 4 years (2016-2019). For research block 5, the SIC in ...
Meeting Document : WG-SAM-2019/15 : Auteur(s): T. Namba, R. Sarralde, H. Pehlke, K. Teschke, T. Brey, S. Hain, T. Ichii, T. Okuda, S. Somhlaba and J. Pompert
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Long-term observations from Antarctica demonstrate that mismatched scales of fisheries management and predator–prey interaction lead to erroneous conclusions about precaution
hierarchical model and 30+ years of monitoring data, we show that expected penguin performance was reduced when ...
Meeting Document : WG-EMM-2019/11 : Auteur(s): G.M. Watters, J.T. Hinke and C.S. Reiss
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Power analyses of CEMP indices for penguins at Admiralty Bay and fur seals at Cape Shirreff and Seal Island
trends over a period of 20 years may be feasible for most indices. Detecting trends in indices A8 and C2 ... values of transformed CEMP indices to breeding year are equal to zero when, in fact, these trends ... less than a 50:50 chance of detecting an actual trend over a period of 5 years. Nevertheless, detecting ...
Meeting Document : WG-EMM-03/52 : Auteur(s): G.M. Watters, R.P. Hewitt, W.Z. Trivelpiece and M.E. Goebel (USA)
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Summer survey of fur seals at Prince Edward Island, southern Indian Ocean
intrinsic rate of natural increase has declined to –0.3% per year over the last seven years, compared to the ... gazella and Subantarctic fur seals A. tropicalis were determined at Prince Edward Island during 16–20 ... 11.4% per year from 2001. With an estimated 810 pups, the Antarctic fur seal is still in the rapid ... 9.3% per year between 1987/1988 and 2001/2002, and the population is in the mature phase of population ...
Meeting Document : WG-EMM-10/P15 : Auteur(s): M.N. Bester, P.G. Ryan and J. Visagie
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Analysis of the by-catch of Channichthys rhinoceratus and Lepidonotothen squamifrons from the fisheries at Heard Island and the McDonald Islands (Division 58.5.2)
, approximately 20 t of C. rhinoceratus and 9 t of L. squamifrons were caught annually. The commercial and ... bycatch of the mackerel icefish fishery than L. squamifrons. Over the 15 years of the fisheries ...
Meeting Document : WG-FSA-12/24 : Auteur(s): G.B. Nowara, D.C. Welsford, S.G. Candy and T.D. Lamb (Australia)
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Apparent decrease of Weddell seal numbers in the western Ross Sea
from seals tracked by satellite indicate wider foraging range during winter than 20 years ago. A large ...
Meeting Document : WG-EMM-14/44 : Auteur(s): D.G. Ainley, M.A. Larue (USA), I. Stirling (Canada), S. Stammerjohn and D.B. Siniff (USA)
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Signy Island, South Orkney Islands, 2004/05
one case the entangling material had become attached to a rock and the animal was tethered to the ...
Meeting Document : SC-CAMLR-XXIV/BG/18 : Auteur(s): Delegation of the United Kingdom
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CHINSTRAP PENGUINS: MISUNDERSTOOD AND VULNERABLE MONITORS OF ECOSYSTEM CHANGES IN THE SCOTIA SEA REGION OF ANTARCTICA
, 30 years of field studies in the WAP, coupled with more regional surveys throughout the Scotia Sea ...
Meeting Document : WG-EMM-09/17 : Auteur(s): W.Z. Trivelpice, J.T. Hinke, A.K. Miller, C. Reiss, S.G. Trivelpiece and G.M. Watters (USA)
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KRILL FISHERY BEHAVIOUR IN THE SOUTHWEST ATLANTIC
through the analysis was 15-30 tonnes/haul, which is higher than the 1980s information (5-10 tonne/haul ... tows were 10-15 nm, which is the scale of a single concentration. However, there was considerable year ... to year variability in the probabilities of operating within a local range after a number of tows. In ... /operational requirements in an area. These kinds of analysis show the importance of good year-round data from ...
Meeting Document : WG-EMM-08/39 : Auteur(s): S. Kawaguchi (Australia)
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Observer coverage required for the prediction of incidental capture of seabirds in New Zealand commercial fisheries
required to attain a coefficient of variation of 30% in the fishery depends on the total effort and on the ... to the 2002–03 fishing years for the trawl fisheries and from the 2000–01 to the 2002–03 fishing ... years for the longline fisheries. The observer coverage fraction is expressed in terms of tows for the ...
Meeting Document : WG-FSA-05/50 : Auteur(s): M.H. Smith and S.J. Baird (New Zealand)