Résultats de la recherche
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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 ... . We found a significant positive correlation between krill recruitment in the Antarctic Peninsula area ... summer season resulted in high krill recruitment in 1987/1988, 1990/1991, and 1994/1995, while the years ...
Meeting Document : WG-EMM-99/52 : Auteur(s): M. Naganobu, K. Kutsuwada, Y. Sasai and T. Taguchi (Japan) and V. Siegel (Germany)
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SPATIAL PATTERNS IN MACKEREL ICEFISH DIET PROVIDES INSIGHTS INTO KRILL ABUNDANCE AND DISTRIBUTION
Abstract: The diet of mackerel icefish was investigated from stomachs of 828 fish caught on the ... 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 ...
Meeting Document : WG-EMM-09/27 : Auteur(s): M.A. Collins and C.E. Main (United Kingdom)
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The relationship between krill (Euphausia superba) fishing areas in the west Atlantic and the species’ circumpolar distribution
which the bulk of the commercial krill catch has been taken. Correspondingly, the areas of the following ... krill concentrations and (d) south of the mean summer position of the 0°C isotherm using specialised ... computer software based on a Lambert Geographical Projection. As a secondary step, the mean krill density ... global biomass for krill within each of the above four regions. Similarly, the maximum estimated krill ...
Meeting Document : SC-CAMLR-VIII/BG/19 : Auteur(s): Delegation of South Africa
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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 : Auteur(s): Siegel, V.
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Biomass of Antarctic krill around South Shetland using 2-dB difference method in April 2016
Abstract: Antarctic Krill plays an important role in Antarctic ecosystems as the medium that ... source for the future food resource. Since Krill is mainly schooled within 200m depth, mass catching is ... regulation that limits Krill catch amount using fishing survey and acoustic assessment data in order to ... utilize Krill resources continuously. This study is aimed to estimate the density and the biomass of Krill ...
Meeting Document : WG-EMM-16/60 : Auteur(s): Delegation of the Republic of Korea
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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 was ... )) 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 : Auteur(s): K. Reid, A.S. Brierley (United Kingdom) and G.A. Nevitt (USA)
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Relationships of Antarctic krill (Euphausia superba Dana) variability with westerlies fluctuations and ozone depletion in the Antarctic Peninsula area
Abstract: The assessment of environmental processes controlling variability of Antarctic krill ... variability of krill recruitment and stock density with hypothesised environmental factors. We demonstrated ... long-term relationship between Antarctic krill recruitment in the Antarctic Peninsula area and sea ... meaning strong westerly winds coincided with good levels of krill recruitment in 1981182 (austral summer ...
Meeting Document : WS-AREA 48-98/5 : Auteur(s): M. Naganobu, K. Kutsuwada, Y. Sasai and S. Taguchi (Japan)
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Inter-annual variability in krill density at South Georgia: 1997–2012
Abstract: Antarctic krill (Euphausia superba) are a key species in Southern Ocean ecosystems ... krill was examined using a 15 year time series of acoustic observations undertaken in the Western Core ... Box (WCB) survey area to the north of South Georgia, Southern Ocean. Krill targets were identified in ... acoustic data using a multi-frequency identification window and converted to krill density using the ...
Meeting Document : WG-EMM-13/14 : Auteur(s): S. Fielding, J.L Watkins, P. Trathan, P. Enderlein, C. Waluda, C. Goss, G. Stowasser, G. Tarling and E. Murphy (United Kingdom)
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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 ... 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 : Auteur(s): V. Akishin (Russia)
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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 : Auteur(s): T. Ichii, K. Kayatama, N. Obitsu, H. Ishii and M. Naganobu (Japan)