Search results
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On the possibility of practical utilisation of krill target strength TS in situ obtained on the basis of EK-500 measurements
Abstract: Comparative analysis of krill length distribution in the echosurvey area, obtained ... with trawl and acoustic methods is presented. Besides, the acoustic estimate of krill length composition ... in situ at the frequency of 120 kHz as measured with echosounder EK-500 (split-beam) principle). Krill ... was caught with the commercial trawl RT 741448. It was shown that differences between krill length ...
Meeting Document : WG-EMM-98/19 : Author(s): S.M. Kasatkina (Russia)
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SPATIAL PATTERNS IN MACKEREL ICEFISH DIET PROVIDES INSIGHTS INTO KRILL ABUNDANCE AND DISTRIBUTION
krill-dependent species was dominated by the hyperiid amphipod Themisto gaudichaudii (92 % IRI ... ) and was low in Antarctic krill (7 % IRI) compared with similar data for the same month in 2004-2006 ... . The results are consistent with other indicators of krill availability on the South Georgia shelf, which ... indicate that the 2008/09 season was a particularly poor one for krill. Comparison of frequency ...
Meeting Document : WG-EMM-09/27 : Author(s): M.A. Collins and C.E. Main (United Kingdom)
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Relationship between Antarctic krill (Euphausia superba) variability and westerly fluctuations and ozone depletion in the Antarctic Peninsula area
and density of Antarctic krill (Euphausia superba) is important, as variability in krill stocks affects ... the Antarctic marine ecosystem as a whole. We have assessed variability in krill recruitment and density ... positive correlation between krill recruitment in the Antarctic Peninsula area and the strength ... krill recruitment in 1987/1988, 1990/1991, and 1994/1995, while the years of weak westerlies resulted ...
Meeting Document : WG-EMM-99/52 : Author(s): M. Naganobu, K. Kutsuwada, Y. Sasai and T. Taguchi (Japan) and V. Siegel (Germany)
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Differentiated catchability of trawls as a method for a more precise estimate of density of krill swarms and its biomass
Abstract: Krill escapement in different parts of krill trawls and their differentiated ... catchability have been studied. It is shown that krill possesses behavioural peculiarities representing ... of fished krill swarms should be performed on the based of differentiated catchability of krill trawls ... . A mathematical model of krill trawling has been developed for estimating the above values. Author(s): V. Akishin ...
Meeting Document : WG-EMM-03/21 : Author(s): V. Akishin (Russia)
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Development of the krill stock in the elephant island region during the 1996/97 season
Abstract: During December 1996 the Elephant Island standard grid was surveyed for krill and salps ... . Krill and salps were present at almost all of the stations, other epipelagic zooplankton species were ... relatively scarce. Maximum krill density exceeded 7350 juvenile krill per 1000 m3. In general krill density ... was much higher than in previous years. The krill stock was dominated by length classes around 35 mm ...
Meeting Document : WG-EMM-97/16 : Author(s): Siegel, V.
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Estimation of the biomass of krill in Prydz Bay during January/February 1991, February/March 1992 and January/ February 1993 using echo integration
Abstract: Hydroacoustic surveys of the abundance of krill (Euphausia superba) in the Prydz Bay ... . The surveys indicated some association of krill with the shelf break in the western part of the survey area ... of relatively high krill abundance. The mean surface density estimates of krill in 1991, 1992 and 1993 were 16.6 ... of krill in Prydz Bay during January/February 1991, February/March 1992 and January/ February 1993 using ...
Meeting Document : WG-Krill-94/21 : Author(s): T. Pauly and I. Higginbottom (Australia)
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Occurrence of Antarctic krill (Euphausia superba) concentrations in the vicinity of the South Shetland Islands: relationship to environmental parameters
Abstract: The influences of abiotic and biotic parameters on the occurrence of Antarctic krill ... krill fishing ground in the Antarctic, during the 1990/1991 austral summer. From early to mid-summer ... krill density increased and showed distinct offshore-inshore differences in abundance and maturity ... stages. In mid-summer, krill density was low in the oceanic zone (8 g m –2, and higher in the slope ...
Meeting Document : WG-EMM-98/18 : Author(s): T. Ichii, K. Kayatama, N. Obitsu, H. Ishii and M. Naganobu (Japan)
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Relationships between the distribution of whales and Antarctic krill Euphausia superba at South Georgia
Abstract: The distribution of whales and krill in two survey boxes north of South Georgia ... )) occurred close to the, largest single aggregation of krill. The level of association between baleen whales ... and krill was examined at a number of spatial scales. There was a positive relationship between whale ... abundance and mean krill density at the largest spatial scale examined (80 x 100km). At progressively ...
Meeting Document : WG-EMM-99/30 : Author(s): K. Reid, A.S. Brierley (United Kingdom) and G.A. Nevitt (USA)
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Krill biomass and distribution variability in Subarea 48.3 in June 1991
Abstract: Temporal and spatial variability of krill distribution features was investigated ... at the micropolygon of 8 x 6 miles, where eight consecutive hydroacoustic stations were carried out. Krill ... number varied within the broad range from 1918 to 7000 and further to 1554 units. Krill biomass ... at polygon varied spasmodically within the range from 1091 to 6085 t. Krill distribution variability revealed ...
Meeting Document : WG-CEMP-92/35 : Author(s): S.M. Kasatkina, E.I. Timokhin, P.P. Fedulov and K.E. Shulgovskiy (Russian Federation)
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Defining fishing grounds in the Scotia Sea
Abstract: This paper provides a method for delineating krill fishing grounds in Area 48 based ... on krill distribution and abundance and movement for the region, which can be used to help understand ... the relationship between the fishing grounds and the krill population. We define a fishing ground as being ... a predictable location where the fishery obtains relatively reliable catches from one year to the next over ...
Meeting Document : WG-EMM-02/40 Rev. 1 : Author(s): I.R. Ball and A.J. Constable (Australia), S. Kawaguchi (Japan) and D. Ramm (CCAMLR Secretariat)