Search results
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Possible approach to krill movement estimation by hydroacoustic observations
Abstract: Method of estimation of krill drift velocity in water current,using repeated acoustic ... have to be determined with taking into account distribution patterns of krill,its patchiness, between ... of acoustic transects 4 hours. Author(s): P.P. Fedulov (USSR) Title: Possible approach to krill movement ... Method of estimation of krill drift velocity in water current,using repeated acoustic transects ...
Meeting Document : WG-KRILL-91/28 : Author(s): P.P. Fedulov (USSR)
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Antarctic krill populations in the outflow region of the north-western Weddell Sea
Abstract: A meso-scale zooplankton and krill net sampling survey was carried out in the north ... March 2013. The aim of the survey was to study the zooplankton composition and krill abundance ... of the survey area was covered by ice during the summer season. Antarctic krill densities were found ... to be highest in the western Peninsula region and lower in ice-covered Weddell Sea waters. Overall krill density ...
Meeting Document : WG-EMM-13/24 : Author(s): V. Siegel (European Union)
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Distributions and predator-prey interactions of macaroni penguins, Antarctic fur seals, and Antarctic krill near Bird Island, South Georgia
. Simultaneous surveys of marine birds, Antarctic fur seals and Antarctic krill were conducted along a series ... between the distributions of predators and their prey with respect to the abundance of krill in the water ... correlations with Antarctic krill density across a wide range of spatial scales. Because krill was abundant ... , we were able to demonstrate an additional influence of Antarctic krill abundance at measurement ...
Meeting Document : WG-CEMP-93/12 : Author(s): G.L. Hunt, Jr (USA), D. Heinemann (USA) and I. Everson (United Kingdom)
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Target strength estimation of Antarctic krill, Euphausia superba by cooperative experiments with commercial trawlers
Abstract: An estimate of target strength of Antarctic krill, Euphausia superba was obtained ... by a series of cooperative experiments between research vessel and commercial krill trawler. Estimated target ... strength per 1g wet weight of Antarctic krill was-66.ldB a t the frequency of 200kHz. Average size of krill ... was 47.48mm and 0.873g. Author(s): Delegation of Japan Title: Target strength estimation of Antarctic krill ...
Meeting Document : SC-CAMLR-VIII/BG/30 : Author(s): Delegation of Japan
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Histopathology of Antarctic krill, Euphausia superba, bearing black spots
Abstract: Small black spots have been noticed on the cephalothorax of Antarctic krill, Euphausia ... superba, since January, 2001. To study the nature of the black spots, the krill were sampled in the winter ... bacteria or amorphous material. In the 2007 samples, 42% of the krill had melanized nodules. Most ... of the nodules had an opening on the body surface of the krill. A single melanized nodule often contained more ...
Meeting Document : WG-EMM-08/P09 : Author(s): S. Miwa, T. Kamaishi, T. Matsuyama, T. Hayashi and M. Naganobu
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Orientation of Antarctic krill in an aquarium
Abstract: Acoustic methods appear to be the best way to estimate Antarctic krill abundance ... directly. Information on body orientation, however, is needed to obtain reliable krill acoustic target ... strength (TS) values, since TS varies with body orientation. Krill body orientation was measured ... (s): Y. Endo (Japan) Title: Orientation of Antarctic krill in an aquarium Approval: Approved ...
Meeting Document : WG-KRILL-93/24 : Author(s): Y. Endo (Japan)
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An acoustic estimation of krill densities to the north of South Georgia in January 1994
strength between the two frequencies (δMVBS = MVBS 120 kHz- MVBS 38 kHz) was used to discriminate krill ... from other acoustic targets. A generic target strength to weight relationship was used to derive krill ... densities from 120 kHz signals attributed krill. At less than 1 g m-2, mean weighted krill densities in both ... evidence of an extreme krill paucity around South Georgia in the 1993/4 season. Author(s): Watkins, J.L ...
Meeting Document : WG-EMM-95/74 : Author(s): Watkins, J.L., Brierley, A.S.
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Distribution, biomass and abundance of Antarctic krill in the vicinity of Elephant Island during the 1996 austral summer
during the 1996 austral summer indicate very good krill recruitment from spawning in 1994/5. Areas ... of high krill density were mapped north of King George and Elephant Islands where water depth was greater ... than 200m. One-year old juvenile krill numerically dominated catches during the first survey in January ... adult krill were caught during both surveys north of the islands, but were numerically dominate only ...
Meeting Document : WG-EMM-96/23 : Author(s): Demer, D.A., Hewitt, R.P., Loeb, V.
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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 ... on previous reports adjusted for the recently proposed definition of krill target strength. Biomass estimates ... xl03 t and 52.8 g/m2. Author(s): D.A. Demer and R.P. Hewitt (USA) Title: Acoustic estimates of krill ... Acoustic estimates of krill biomass in the vicinity of Elephant Island for the years 1981-1993 ...
Meeting Document : WG-KRILL-93/49 : Author(s): D.A. Demer and R.P. Hewitt (USA)
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How many krill should we measure?
Abstract: We have no standard as to how many krill we should measure to obtain reliable estimates ... on its body length distribution. Krill samples collected from layers in the northern waters of Livingston ... on cumulative frequency distributution. Author(s): Y. Endo (Japan) Title: How many krill should we measure ... We have no standard as to how many krill we should measure to obtain reliable estimates on its body ...
Meeting Document : WG-KRILL-90/26 : Author(s): Y. Endo (Japan)