Search results
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Target strengths of krill at 136 and 20 kHz
Abstract: Estimation of krill target strength was made by ensonification of encaged live krill ... and using trawling-acoustic method. Ensonification of encaged live krill. For aggregations with mean lengths ... in the range (45,50) mm the mean single-krill target strengths are in the range (-68,-69) dB at 136 kHz ... . For aggregations with mean lengths in the range (43,47)mm the mean single-krill target strengths are in the range ...
Meeting Document : WG-KRILL-91/29 : Author(s): S.M. Kasatkina (USSR)
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Krill distribution and biomass variability within Subarea 48.3 in June 1991
Abstract: Temporal and spatial variability of krill distribution characteristics was investigated ... in an 8 x 6 mile micropolygon, where eight consecutive hydroacoustic surveys were carried out. Krill aggregations ... number varied within the board range from 1 918 to 7 000 and further to 1 554 units. Krill biomass ... in the polygon varied spasmodically within the range from 1 091 to 6 085 tonnes. Krill distribution variability ...
Meeting Document : WG-KRILL-93/35 : Author(s): S.M. Kasatkina, E.N. Tymokhin, P.P. Fedulov and K.E. Shulgovskiy (Russia)
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Report of biological observations carried out on board the krill fishing vessel More Sodruzhestva in April to August 1991
Abstract: An observation program was carried out by a biologist-observer on board the krill ... observation of krill fishing operations, collection and processing of catch samples for analysing ... physiological status and size composition of krill and also for determining the level of by-catch of juvenile ... channichthyids. In general, krill density in Subarea 48.2 was twice as high as that in Subarea 48.3. Catch-per ...
Meeting Document : WG-KRILL-92/06 : Author(s): V.I. Latogursky (Russia)
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Prediction of krill target strength by liquid prolate spheroid model
(TS) of krill. Scattering patterns are shown to demonstrate orientation dependence of krill TS. Length ... . The variability of the TS of krill is large where L/λ is larger than unity. Therefore, a frequency around 70 kHz ... is superior to 120 kHz which are ordinarily used for krill surveys. Author(s): M. Furusawa and Y. Miyanohana ... (Japan) Title: Prediction of krill target strength by liquid prolate spheroid model Approval: Approved ...
Meeting Document : WG-KRILL-93/21 : Author(s): M. Furusawa and Y. Miyanohana (Japan)
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Winter gut contents of the Antarctic krill (Euphausia superba Dana) collected in the South Georgia area
Abstract: Foregut contents of the Antarctic krill Euphausia superba Dana which were collected ... (adults: 78, subadults: 49, juveniles: 3) which were caught by krill trawling from various depths were ... examined in this study. The foregut contents of the krill consisted of various fragments of crustacean ... zooplankton in 77 individuals out of 130 examined. Among the fragments a portion of the pereiopods of krill ...
Meeting Document : WG-KRILL-93/30 : Author(s): Y. Nishino and A. Kawamura (Japan)
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Note on relationship between the Antarctic krill and annual variation of ice edge during 1979 to 1992
Abstract: During 1979 to 1991, relationship between the size of Antarctic krill and the extent ... of the sea ice in the sea area around the South Shetland Islands are described. Mean size of krill near ... . This implies that strong recruitment of small size krill had occurred just after the season with the strong ice ... circumpolar trough. Therefore, it could be suggested climate and ecology of krill populations are closely ...
Meeting Document : WG-KRILL-93/26 : Author(s): M. Naganobu and S. Kawaguchi (Japan)
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Krill processing factors
Abstract: There is a wealth of earlier papers on the topic of krill processing dominated ... by the works of Grantham (1977) “The Utilization of Krill”, Budzinski et al (1985), “The Possibilities ... of Processing and Marketing of Products Made from Antarctic Krill”, and from works produced by J. K McElroy ... market prices for Krill Products. Yield Estimates from round (Whole) Krill are as follows from McElroy ...
Meeting Document : WG-EMM-01/44 : Author(s): D. Rogers (USA)
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Krill caught by predators and nets: differences between species and techniques
Abstract: Samples of Antarctic krill collected from six seabird species and Antarctic fur seal ... during February 1986 at South Georgia were compared to krill from scientific nets fished in the area ... at the same time. The length-frequency distribution of krill was broadly similar between predators and nets ... although the krill taken by diving species formed a homogeneous group which showed significant differences ...
Meeting Document : WG-EMM-96/09 : Author(s): Hill, H.J., Reid, K., Trathan, P.N., Croxall, J.P.
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
Abstract: Krill stock composition and distribution patterns in the vicinity of Elephant Island ... . The general distribution of krill length and maturity classes conformed to previous descriptions and appears ... to be a recurring and predictable aspect of the krill stocks in the Antarctic Peninsula region. The length frequency ... , maturity stage composition and reproductive activity of krill appeared to be affected by dense salp ...
Meeting Document : WG-KRILL-93/08 : Author(s): V. Loeb (USA) and V. Siegel (Germany)
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Krill length frequency distribution in Subarea 48.3 in January–April 1988 in relation to sources of its origin
Abstract: Krill length frequency distribution through subarea 48.3 in 1988 January-February ... is considered in the frame of hypothesis of krill resources forming from two sources: Antarctic Circumpolar ... Current and Weddell Scotia Sea water flow. It is shown, that small krill with the mode of about 33 mm ... at the distance of about 30-60 miles, beyond boundary zone occurs larger krill with the mode of about 49 mm. Krill ...
Meeting Document : WG-EMM-03/40 : Author(s): F.F. Litvinov, V.N. Shnar, A.V. Zimin and V.V. Lidvanov (Russia)