Search results
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Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 and 120 kHz
Abstract: Differences in the target strength of adult Antarctic krill (Euphausia Superba) at 38 ... 1990. Krill in these areas varied in total length between 36 and 60mm. Backscattering strengths at 120 ... (s): I. Hampton (South Africa) Title: Measurements of differences in the target strength of Antarctic krill ... Differences in the target strength of adult Antarctic krill (Euphausia Superba) at 38 and 120 kHz ...
Meeting Document : WG-KRILL-90/28 : Author(s): I. Hampton (South Africa)
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2007 krill biomass update of the South Shetland and Elephant Island regions of Area 48
Abstract: Antarctic krill biomass trends in the South Shetland Island region of Area 48 ... krill delineation model are used to derive krill biomass. This paper provides updated (through summer ... from Author(s): C.S. Reiss and A.M. Cossio (USA) Title: 2007 krill biomass update of the South ... Antarctic krill biomass trends in the South Shetland Island region of Area 48 are presented ...
Meeting Document : WG-EMM-07/31 : Author(s): C.S. Reiss and A.M. Cossio (USA)
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CCAMLR WG-Krill newsletter
Author(s): J. Watkins (Secretary SCAR Sub-Committee on Krill), D. Miller (Convener WG-Krill ... ) Title: CCAMLR WG-Krill newsletter Approval: Approved ... J. Watkins (Secretary SCAR Sub-Committee on Krill), D. Miller (Convener WG-Krill) ... CCAMLR WG-Krill newsletter ...
Meeting Document : WG-EMM-95/35 : Author(s): J. Watkins (Secretary SCAR Sub-Committee on Krill), D. Miller (Convener WG-Krill)
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Preliminary results of a survey on krill, environment and predators in CCAMLR Subarea 88.1 carried out in December 2003 and in January 2004 (Project 8.4)
88.1 (Ross Sea): acoustic survey on two krill species (E. superba and E. crystallorophias), net ... samplings on krill and other pelagic species, visual samplings on krill predators, CTD and XBT samplings ... (Italy) Title: Preliminary results of a survey on krill, environment and predators in CCAMLR Subarea ... Sea): acoustic survey on two krill species (E. superba and E. crystallorophias), net samplings ...
Meeting Document : WG-EMM-04/71 : Author(s): M. Azzali, A. Russo, A. Sala, A. de Felice, B. Catalano (Italy)
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WILL KRILL FARE WELL UNDER SOUTHERN OCEAN ACIDIFICATION?
Abstract: Antarctic krill embryos and larvae were experimentally exposed to 380 (control), 1000 ... of krill. No significant effects were detected on embryonic development or larval behaviour at 1000 μatm ... water pCO2 could rise up to 1400 μatm in krill’s depth range under the IPCC IS92a scenario by the year ... -response relationship for krill developmental and later stages, in order to predict the possible fate ...
Meeting Document : WG-EMM-11/P6 : Author(s): S. Kawaguchi, H. Kurihara, R. King, L. Hale, T. Berli, J.P. Robinson, A. Ishida, M. Wakita, P. Virtue, S. Nicol and A. Ishimatsu
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Some components of uncertainty in the CCAMLR 2000 acoustical survey of krill
acoustical estimate of krill abundance in FAO statistical area 48. The variance in system calibration ... absorption, and beam characteristics. Uncertainty in krill target strength (TS) was estimated using ... a distorted wave born approximation model of krill TS, fitted with measured distributions of animal lengths ... frequency measurements provided independent estimates of the krill biomass. The overall variance (1 1.33 ...
Meeting Document : WG-EMM-00/49 : Author(s): D.A. Demer (USA)
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Dynamic model of krill Euphausia superba swarm
, using the 38 and 120 kHz BioSonics dual-beam hydroacoustic system, numerous swarms of krill Euphausia ... (Okubo, 1980, 1986). It was assumed that the above mentioned model can also be applicable to krill swarms ... . Using physical parameters of the krills' swarm (density, length), the above assumption was verified ... . It was found that the vertical density pattern of krills' swarm, with a mean density of up to 1000 ...
Meeting Document : WG-EMM-95/68 : Author(s): Kalinowski, J., Azzali, M.
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Acoustic estimates of krill density at South Georgia during 11 austral summers between 1981 and 1998
Abstract: Acoustic estimates of densities of Antarctic krill, Euphausia superba, at South Georgia ... are presented for eleven austral summers between 1981 and 1998. Krill abundance at the island fluctuated widely ... austral summer seasons were characterised by particularly low abundances of krill. For five of the summers ... . Brierley, J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson (UK) Title: Acoustic estimates of krill ...
Meeting Document : WG-EMM-98/51 : Author(s): A.S. Brierley, J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson (UK)
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Longterm monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
Abstract: Krill distribution and density are reviewed for the Elephant Island area with regard ... la Mare (1994a). The high interannual variability of krill recruitment is confirmed by the present ... fluctuations in krill density over the period 1977 to 1994 are also confirmed by this study using randomisation ... monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula ...
Meeting Document : WG-EMM-96/45 : Author(s): de la Mare, W., Loeb, V., Siegel, V.
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Histopathology of Antarctic krill (Euphausia superba) bearing black spots
Abstract: In Antarctic krill, Euphausia superba, sampled by a Japanese scientific observer ... onboard a krill fishing vessel in the winter of 2003 and 2006 in the South Georgia region, the Antarctic ... Ocean, approximately 2-5% of sub-samples of 100 krill bore small black spots. The black spots were most ... from a gonadal tissue. These results suggest that the krill were affected by bacterial infections ...
Meeting Document : WG-EMM-07/29 : Author(s): S. Miwa, T. Kamaishi, T. Matsuyama, T. Hayashi and M. Naganobu (Japan)