Résultats de la recherche
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A note on the chlorophyll measurement by satellite remote sensing in the Antarctic Ocean
Abstract: This paper describes the usefulness of satellite ocean color remote sensing in the Antarctic Ocean by making a comparison between CZCS chlorophyll images and ship-measured chlorophyll concentrations in the sea area off Enderby Land, Antarctica. In addition, some characteristics of the
Meeting Document : WG-KRILL-93/33 : Auteur(s): T. Ogishima, M. Naganobu and S. Matsumura (Japan)
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Peak mortality of krill, fished with midwater trawls and feasible criteria of krill trawls ecological safety
Abstract: The mathematical model of a fishery object contact against a mesh, while escaping through a trawl chafer, is presented. Based on it t the equations are provided to calculate the object elimination probability caused by cath and mortality in fishery operations. The coefficient of trawl
Meeting Document : WG-KRILL-93/34 : Auteur(s): Yu. V. Kadilnikov (Russia)
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Estimation of chlorophyll distributions obtained from satellite images (Nimbus-7/CZCS) in the Antarctic Ocean
Abstract: Previous studies have established that ocean color information from Nimbus-7/CZCS{Coastal Zone Color Scanner) could be related to distribution of phytoplankton pigment (Chlorophyll-a + pheopigments) concentrations. CZCS data from polar regions have been utilized only a limited number
Meeting Document : WG-KRILL-93/39 : Auteur(s): N. Kimura, Y. Okada, S. Matsumura and Y. Sugimori (Japan)
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Krill length and age at maturity
Abstract: Data from several summer surveys to the Antarctic Peninsula region were analysed to calculate length and age at maturity for the Antarctic krill Euphausia superba. L50 values of 34.62 to 35.90 mm for female krill are the best estimates for the high spawning season. Males attain sexual
Meeting Document : WG-KRILL-93/40 : Auteur(s): V. Siegel (Germany) and V. Loeb (USA)
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Antarctic krill, Euphausia superba Dana, demography studies in the seas of Sodruzhestvo and Cosmonauts (Indian Ocean sector of Antarctica)
Abstract: The materials on Euphausia superba biological state and size composition in the Indian Antarctic seas for the period from 1985 to 1990 are analyzed to form an opinion about its growth, life duration, as well as about the interannual variability in the above parameters. According to our
Meeting Document : WG-KRILL-93/45 : Auteur(s): E.A. Pakhomov (Ukraine)
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Vacant
Title: Vacant Approval: Approved
Meeting Document : WG-KRILL-93/46
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Penguin foraging behavior in relation to the distribution of prey
Abstract: The diving behavior of 7 chinstrap penguins (Pygoscelis antarctica) (N=12,171 dives) was measured concurrently with a hydroacoustic assessment of the vertical distribution and abundance of their primary prey, krill (Euphausia superba) in the vicinity of Seal Island, South Shetland
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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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 results of qualitative and quantitative hydroacoustic surveys which are conducted with a down-looking sonar and independent of the time of day. To demonstrate and quantify these negative biases on
Meeting Document : WG-KRILL-93/48 : Auteur(s): D.A. Demer and R.P. Hewitt (USA)
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Acoustic estimates of krill biomass in the Elephant Island area: 1981-1993
Abstract: Acoustic estimates of krill biomass in the vicinity of Elephant Island for the years 1981-1993 (with the exception of 1982 and 1986) are presented. Estimates for 1981-1991 are based on previous reports adjusted for the recently proposed definition of krill target strength. Biomass
Meeting Document : WG-KRILL-93/49 : Auteur(s): D.A. Demer and R.P. Hewitt (USA)
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Fishes in pelagic catches in the vicinity of the South Shetland Island during the 6th Antarctic expedition of rv Kaiyo Maru, 1990/1991
Abstract: During the 6th Antarctic Expedition of R/V Kaiyo Maru (1990/1991), observations on the occurrence and abundance of fishes in a total of 102 pelagic hauls for the Antarctic krill were made. Of the 102 net hauls, a total of 104 fishes belonging to 4 families and 16 species were captured in
Meeting Document : WG-KRILL-93/50 : Auteur(s): T. Iwami, T. Ichii, H. Ishii and M. Naganobu (Japan)