Resultados de la búsqueda
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Variation in the distribution of Antarctic krill Euphausia superba around South Georgia
South Georgia. Here we summarize the length-frequency distributions of krill caught on each of these ... cruises and look particularly at differences between krill taken from the eastern and western ends of the ... types with relatively simple biological characteristics: cluster 1 were medium-sized year 2+ krill (mean ... size 39.7 mm); cluster 2 were a mixture of year classes (mean size 37.7 mm); cluster 3 were large krill ...
Meeting Document : WG-EMM-97/47 : Autor(es): Daly, H.I., Murray, A.W.A., Watkins, J.L.
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Winter distribution and condition of Antarctic krill in relation to sea-ice and water column production in the South Shetland Islands during Austral Winter 2013
Abstract: Acoustic and net sampling of Antarctic Krill and other euphausiids was conducted at 88 ... . Abundance and demographic patterns revealed that Antarctic krill were concentrated in the southern ... Bransfield Strait, and that these krill were approximately 33mm in length, about 10mm larger than found ... during the 2012 winter survey (Reiss and Jones 2013; WG-EMM 13/40) but similar in size to krill found in ...
Meeting Document : WG-EMM-14/13 : Autor(es): C.S. Reiss, J. Walsh, K. Dietrich and J.A. Santora (USA)
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A comparison of acoustic targets at South Georgia and the South Orkney Islands during a season of profound krill scarcity
acoustic targets into three biological categories: Antarctic krill; nekton (larger than krill); and ... zooplankton (smaller than krill). To counter the absence of krill length-frequency data from Coronation Island ... conjunction with appropriate 120 kHz data to calculate krill density estimates for both survey areas. Krill ... density; for example one echo-integration interval contained 104 times the mean krill density. An ...
Meeting Document : WG-EMM-95/75 : Autor(es): Watkins, J.L., Brierley, A.S.
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Fishing intensity of Russian fleet krill fishery in Subarea 48.2 and 48.3
Abstract: The purpose of this paper was estimating commercial fleet impact on krill population in ... AtlantNIRO. Intensity of commercial fleet impact on krill population, on biomass and density of krill ... operation during the seasons of its largest fishing pressing shows no fishing effect on the krill stock and ... , consequently, on krill-dependent predators. Krill fishery, neither by the removal value nor by intensity, was ...
Meeting Document : WG-EMM-02/62 : Autor(es): S.M. Kasatkina and V.F. Ivanova (Russia)
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THE ANTARCTIC KRILL AND ECOSYSTEM SURVEY WITH R/V “G. O. SARS” IN 2008
Abstract: This report describes the multipurpose AKES survey (Antarctic Krill and Ecosystem ... purposes for the AKES project were to • evaluate the links between the krill resources and distribution in ... the area and Bouvetøya based mammals and birds • study krill biology and ecology • establish TS ... (Target strength; the ability of an organism to reflect sound) for krill and ice fish • study aggregations ...
Meeting Document : WG-EMM-08/28 : Autor(es): S.A. Iversen (Norway), W. Melle, E. Bagøien, D. Chu, B. Edvardsen, B. Ellertsen, E. Grønningsæter, K. Jørstad, E. Karslbakk, T. Klevjer, T. Knutsen, R. Korneliussen, H. Kowall, B. Krafft, S. Kaartvedt, P.B. Lona, S. Murray, L. Naustvoll, L. Nøttestad, M. Ostrowski, V. Siegel, Ø. Skagseth, G. Skaret, H. Søiland, X. Zhao and C.B. Årnes
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Hydroacoustic assessment of krill in Area 58 of the Indian Ocean sector of the Antarctic region
Abstract: On the basis of acoustically registered krill swarms along a 1097 nm transect in the ... area 58 of Indian Ocean Sector of Antarctic region, the biomass density of krill, their spatial and ... depth distribution are presented. The mean density of krill biomass between 60°00'S and 61°00' ... ; S parallels 34°00'E and 40°00'E meridian was recorded as 0.6t.km-2. Presence of krill was ...
Meeting Document : WG-EMM-98/36 : Autor(es): Z. Klusek and A. Anrose (India)
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An initial examination of using CPUE as a fishery performance index for the krill fishery
Abstract: Early analyses of CPUE in the krill fishery concluded that it was not a useful index of ... krill abundance. However, understanding the factors effecting the operation of the krill fishery and the ... extent to which these reflect changes in krill abundance are key elements of developing feedback ... management of the krill fishery. This analysis reviewed catch and effort data from the krill fishery for the ...
Meeting Document : WG-EMM-16/10 : Autor(es): CCAMLR Secretariat
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Modelling Southern Ocean krill population dynamics: biological processes generating fluctuations in the South Georgia ecosystem
important aspect of the variation is fluctuation in the abundance of krill, the major prey item of many of ... . So far, however, there has been little quantitative assessment of the importance of krill population ... dynamics in the observed variation. Here, analyses of a model of krill population development and predator ... diet data from South Georgia were used to examine seasonal changes in the population structure of krill ...
Meeting Document : WG-EMM-01/53 : Autor(es): E. Murphy and K. Reid (United Kingdom)
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Relationship between distribution of Antarctic krill (Euphausia superba) and environmental index MTEM-200 in the Antarctic Ocean throughout the year
Abstract: Antarctic krill (Euphausia superba) is the key species of the Antarctic marine ... ecosystem and human fishing resources. Essentially, relationships between krill distribution and ... the entire Antarctic Ocean. To clarify the relationship between krill distribution of krill and ... oceanographic environment, we have analysed two datasets combined. One is krill fishing records from 1973 to ...
Meeting Document : WG-EMM-08/32 : Autor(es): M. Naganobu, T. Kitamura and K. Hasunuma (Japan)
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A note on relating krill CPUE measures to abundance trends
Abstract: A crude mathematical framework is developed to describe krill abundance in terms of ... selected parameters of various aggregation behaviours exhibited by krill (Euphausia superba Dana). The ... ) for the Antarctic krill fishery is considered. The combined index of catch-per-hour of trawling ... divided by average inter-concentration search time is suggested as a possible measure of krill abundance ...
Meeting Document : WS-KCPUE-85/03 : Autor(es): D.G.M. Miller and D.S. Butterworth (South Africa)