Résultats de la recherche
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Distribution of krill as a fraction of Antarctic zooplankton within the South Sandwich Islands area in summer 2000
Abstract: The paper covers the-results of an acoustic estimation of distribution for krill and ... non-krill zooplankton within the area of South Sandwich Islands that has been obtained with multy ... . Distribution of acoustic characteristics for krill and non-krill fractions of antarctic zooplankton has been ... Frontal Zone of Weddell Gyral the bulk of zooplankton had been made of krill, while non-krill fraction ...
Meeting Document : WG-EMM-00/50 : Auteur(s): S.M. Kasatkina and A.P. Malyshko (Russia)
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Assessment of fishable krill biomass on the basis of the acoustic surveys results using geostatistical methods
krill density based on the acoustic survey data is demonstrated. The results obtained indicate ... usefulness of these methods in studying the structure of krill density field for biomass assessment in ... compliance with different thresholds of their fishery importance. The structure of krill density field in ... Subarea 48.3 based on the surveys 2000 and 2002 indicates that krill fishable biomass is concentrated in ...
Meeting Document : WG-SAM-10/07 Rev. 1 : Auteur(s): S.M. Kasatkina and P.S. Gasyukov (Russia)
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Chinstrap penguins alter foraging and diving behaviour in response to krill size
changes in prey availability. Chinstrap penguins are dependent predators of Antarctic krill in the Scotia ... Sea region. Both the sizes of krill found in penguin diets and acoustic estimates of krill biomass ... recorders (TDRs) over five seasons: 2002-06. When krill were smaller, chinstrap penguins often exhibited a ... daytime. The average annual size of krill was negatively correlated to the number of penguins foraging on ...
Meeting Document : WG-EMM-07/11 : Auteur(s): A.K. Miller and W.Z. Trivelpiece (USA)
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EU PROPOSAL FOR AMENDMENT TO CCAMLR CONSERVATION MEASURE 10-04 TO INCLUDE KRILL VESSELS IN VMS REPORTING
Abstract: EU PROPOSAL FOR AMENDMENT TO THE CCAMLR CONSERVATION MEASURE 10-04 TO INCLUDE KRILL ... VESSELS IN VMS REPORTING Explanatory Memorandum The importance of krill within the Antarctic ecosystem is ... krill and the durability of this resource, especially given that the possible increase of the krill ... received from their krill vessels to the CCAMLR Secretariat (CM 10-04 para 10 and onwards). The Contracting ...
Meeting Document : CCAMLR-XXIX/41 : Auteur(s): Delegation of the European Union
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Krill fishery report: 2006 update
Abstract: This report on the krill fishery in Area 48 has been prepared in a format similar to ... from 5 Contracting Parties are fishing for krill in Area 48 in the 2005/06 season, and these vessels ... have taken 64415 t of krill to date. Two CCAMLR scientific observers have been deployed. The ... preliminary estimate of the total catch of krill for the season is approximately 97090 t. This compares with ...
Meeting Document : WG-EMM-06/5 : Auteur(s): Secretariat
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The US commercial krill fishery in Area 48: development, fishing patterns, and decision making
for krill (Euphausia superba) in Area 48 in July, 2000. This fishery has continued and expanded each ... decision making processes involved in harvesting krill by the U.S. fishery. Because the Captain of the Top ... Ocean had no prior experience fishing for krill, anecdotal and historical information served as the ... , and the decision making processes involved in prosecuting the U.S. commercial fishery for krill by ...
Meeting Document : WG-EMM-02/18 : Auteur(s): C.D. Jones and M. Hull (USA)
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Net-based verification of acoustic techniques used to identify Antarctic krill
Distorted Wave Approximation (SDWBA) krill target strength model, are assessed. Three frequency acoustic ... data and concurrent net information, from 16 net hauls through krill aggregations, were collected ... . Using the SDWBA model, dB difference identification ranges based on the length-frequencies of krill in ... identified only 6 of the 16 krill aggregations sampled the nets. contrast the '2 freq model' and ...
Meeting Document : SG-ASAM-09/04 : Auteur(s): J. Watkins and S. Fielding (United Kingdom)
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Preliminary results on the composition and abundance of the krill stock in the southern Bellingshausen Sea (Antarctic, CCAMLR Subarea 88.3)
Abstract: Krill sampling was carried out onboard RV ‘Polarstem’ from January 25 to March 11, 1994 ... south of 66°S, between 68°W and 120°W. Krill Euphausia superba abundance and biomass was in the lower ... spatial separation for size groups was observed for krill, with small size groups being more abundant in ... . The overall krill length frequency distribution was similar to the composition reported from the South ...
Meeting Document : WG-EMM-95/18 : Auteur(s): Siegel, V.
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Direct ageing of Antarctic krill (Euphausia superba) – potential utility of eyestalk sections for age determination
Abstract: We outline a method for the direct determination of age in Antarctic krill (Euphausia ... proof of concept study using several known age krill grown under controlled conditions at the Australian ... performed. First, longitudinal sections of the eyestalk from known age krill (2+ and 3+ years old) were ... . Second, six krill were aged (blind to the reader) from samples collected during summer and winter (2013 ...
Meeting Document : WG-EMM-15/45 : Auteur(s): C. Reiss (USA), R. Kilada (Canada) and S. Kawaguchi (Australia)
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Distribution and abundance of Antarctic krill (Euphausia superba) off East Antarctic (30–80°E) in January–March 2006
of Division 58.4.2 for the purposes of estimating the unexploited biomass (B0) of Antarctic krill ... acoustic estimates of krill mean biomass density, biomass and variance. The mean acoustic biomass density ... of krill, integrated to 250 m depth across the entire survey stratum (1.31 million km2), was 9.48 g m ... -2. B0 was estimated to be 12.46 million tonnes with a CV of 15.15%. Krill were widely distributed at ...
Meeting Document : WG-EMM-07/33 : Auteur(s): T. Jarvis, N. Kelly, E. van Wijk, S. Kawaguchi and S. Nicol (Australia)