Résultats de la recherche
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Movement, growth and available abundance to the fishery of Dissostichus eleginoides Smitt, 1898 at Heard Island, derived from tagging experiments
separation using tagged fish from the fishery around Heard Island and McDonald Islands (HIMI) in the ... Australian Exclusive Economic Zone (EEZ). Movement, growth and trends in fish abundance are examined using ... these data. The bulk of the data show that fish disperse only a very short distance, up to 15 n miles in ... concentration of effort should also result in a high probability of detecting fish movements between grounds, if ... document examine les hypothèses de séparation des stocks par le biais du marquage de poissons de la ... a similar fi shery at Macquarie Island since January 1996. Fish were tagged with two separate ... mm in total length with about 30 mm protruding from the fi sh. Fish were tagged with one TIRIS tag ... second dorsal fi n so that the T-bar engages in the fi n ray supports. Fish smaller than 400 mm total ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Auteur(s): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb
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An attempt to derive a composite index of abundance from acoustic surveys and fishery data
Abstract: Maps of krill (Euphausia superba) density derived from acoustic survey data and the ... distribution of fishing effort in the Chilean krill fishery indicate an area of high krill density wrapping ... distribution of catch-per-fishing-time and krill density (measured acoustically) show similar forms. Search ... time could not be used to estimate other aspects of krill distribution pattern because fishing ...
Meeting Document : WG-Krill-94/14 : Auteur(s): R.P. Hewitt (USA), V. Marín (Chile) and D. Demer (USA)
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Penguin foraging behavior in relation to the distribution of prey
of their primary prey, krill (Euphausia superba) in the vicinity of Seal Island, South Shetland ... Islands, Antarctica between January 19 and March 10 1992. Krill was found to show a distinct diel ... of chinstrap penguin dives was found to follow the diel migration pattern of the krill. On average ... , chinstrap penguins dove to the shallow limit of the distribution of krill. The maximum depth of penguin ...
Meeting Document : WG-KRILL-93/47 : Auteur(s): D.A. Croll, R.P. Hewitt, D.A. Demer and J.K. Jansen (USA)
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In situ target strength measurements of Antarctic zooplankton (Euphausia superba and Salpa thompsoni) at 120 khz and 200 khz, corroboration of scattering models, and a statistical technique for delineating species
scattering is from each animal's spheroidal nucleus. Consistent with the measurements of encaged krill ... (5):2985-2988 (1993)], the TS of in-situ krill are shown to fit a deformed cylinder model [T.K ... frequencies. About 15% of the tests indicated the presence of salps without krill and about 3% revealed krill ... without salps. The salp/no krill echograms were characterized by diffuse scattering layers which were much ...
Meeting Document : WG-Krill-94/12 : Auteur(s): D.A. Demer and R.P. Hewitt (USA)
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A review on the feeding conditions of the baleen whales in the Southern Ocean
and unpublished data since 1946. Past geographical distributions of the krill in the whales stomach ... revealed that the frequency occurrence by krill size showed that the large krill(>50mm) occurs more ... finally small krill (Author(s): A. Kawamura (Japan) Title: A review on the feeding conditions of the ...
Meeting Document : WG-KRILL-93/16 : Auteur(s): A. Kawamura (Japan)
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Letter from the Convener
of precautionary yield, CEMP on what we have now, and scientific observation of the krill fishery ... intersessional Working Group meetings of the Scientific Committee are to be held in Punta Arenas, Chile, with ... . Our work plan priorities have primarily been developed by the Scientific Committee, and are set out in ... consultation with the Scientific Committee Chair and to communicate the outcomes to the Members, which is the ...
Document : Site Section: Meetings
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Distribution of salps near the South Shetland Islands; their ecological significance in the area
krill biomass in the area. Two species; Salpa thompsoni and Ihlea racovitzai were found, and the former ... was dominant. Horizontal distribution of salps and krill did not overlap. Krill occurred abundantly at ...
Meeting Document : WG-KRILL-93/17 : Auteur(s): J. Nishikawa, M. Naganobu, T. Ichii and K. Kawaguchi (Japan)
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Biological acoustic survey in the marginal ice edge zone of the Bellingshausen Sea
of krill (Euphausia superba) distribution and biomass in the marginal ice edge zone. Krill biomass ... . Some calculations are presented to show the potential impact of krill on the flux of carbon in the area ...
Meeting Document : WG-Krill-94/32 : Auteur(s): A.W.A. Murray, J.L. Watkins and D.G. Bone (United Kingdom)
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Bias in acoustic biomass estimates of Euphausia superba Dana to diel vertical migration
Abstract: The diel vertical migration of Antarctic krill (Euphausia superba) can greatly bias the ... centered on a large krill swarm to the west of Seal Island. Average krill volume densities were calculated ...
Meeting Document : WG-KRILL-93/48 : Auteur(s): D.A. Demer and R.P. Hewitt (USA)
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Numerical model of ecosystem including Euphausia superba Dana as a key species in circumpolar region
applied to primary production in Antarctic Ocean (3) to develop an ecosystem model able to describe krill ... numerical model including the effect of marine mammal consumption and catch of krill (6) to develop the ...
Meeting Document : WG-Krill-94/26 : Auteur(s): M.J. Kishi and M. Naganobu (Japan)