Search results
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Results from the 2019 annual acoustic krill monitoring off the South Orkney Islands
Abstract: In 2019, the annual IMR regional krill monitoring survey off the South Orkneys ... was conducted by RV Kronprins Haakon as part of the Scotia Sea large scale krill monitoring effort. To allow ... surveys from 2011 to 2018. The distribution was similar to previous years with most krill along the shelf ... edge north of the Islands. Also the krill areal density measured on the 120 kHz of 69.87 g/m 2 was very ...
Meeting Document : WG-EMM-2019/69 : Author(s): G. Skaret, B.A. Krafft, G. Macaulay, T. Knutsen and O.A. Bergstad
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Results of a hydroacoustic survey of Antarctic krill populations in CCAMLR Division 58.4.1 carried out in January to April 1996
Abstract: In January-March 1996 a hydroacoustic survey for Antarctic krill was conducted ... in CCAMLR Division 58.4.1 for the purposes of estimating overall biomass (B0). The krill biomass in the area ... surveyed (873,000 km2) was estimated to be 6.67 million tonnes with a CV of 27%. Krill were more abundant ... in the west of the survey area 800-1200E than in the 120°-150°E region. The majority of the krill detected ...
Meeting Document : WG-EMM-96/28 : Author(s): Higginbottom, I., de la Mare, W., Pauly, T., Nicol, S.
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Demography of Antarctic krill in the Lazarev Sea (Subarea 48.6) in the 2005/06 season
Abstract: A standardized krill net sampling survey was conducted in the Lazarev Sea (Subarea 48.6 ... ) in December 2005. Krill densities were low in the Lazarev Sea. No substantial day/night differences were ... observed in the catches. Spatial distribution of krill density and size/age classes is discussed ... for the Lazarev Sea. Recruitment indices were calculated for one-year-old (R1) and two-year-old krill (R2 ...
Meeting Document : WG-EMM-06/10 : Author(s): V. Siegel (Germany)
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On the use of scientific observers on board krill fishing vessels
Abstract: Wide-scale monitoring of the status of Antarctic krill resources had been previously ... the System of International Scientific Observation compulsory in Antarctic krill fisheries. Indeed ... , a widespread introduction of scientific observation on krill fishing vessels can help to ease the existing ... deficit of fishery-independent krill surveys. Author(s): Delegation of Ukraine Title: On the use ...
Meeting Document : WG-EMM-05/32 : Author(s): Delegation of Ukraine
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Krill consumption by crabeater seals in CCAMLR Divisions 58.4.1 and 58.4.2
Abstract: As a contribution to the work program of WG-EMM-STAPP to estimate krill consumption ... by predators, this paper presents estimates of krill consumption by crabeater seals off East Antarctica between ... 64ºE-150ºE, which includes all of Division 58.4.1 and part of Division 58.4.2. Krill consumption ... . This represents approximately 20% of the krill biomass estimated from acoustic surveys. Author(s): C. Southwell ...
Meeting Document : WG-EMM-16/66 : Author(s): C. Southwell, J. Forcada, L. Emmerson, A. Constable, S. Kawaguchi and P. Trathan
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Competition-induced starvation drives large-scale population cycles in Antarctic krill
Abstract: Antarctic krill (Euphausia superba)—one of the most abundant animal species on Earth ... . Previous studies have postulated that the krill cycle is induced by periodic climatological factors ... , using data analysis complemented with modelling of krill ontogeny and population dynamics, we identify ... intraspecific competition for food as the main driver of the krill cycle, while external climatological factors ...
Meeting Document : WG-EMM-18/P05 : Author(s): A.B. Ryabov, A.M. de Roos, B. Meyer, S. Kawaguchi and B. Blasius
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ANTARCTIC PENINSULA DECADAL WINTER TEMPERATURE ANOMALIES AND ANTARCTIC KRILL VARIABILITY IN THE SOUTH ATLANTIC REGION: PRELIMINARY RESULTS
Abstract: The influence of the climate change on krill based Southern Ocean ecosystem is studied ... warming and ecosystem changes the data of Antarctic krill density (KRILLBASE data) and of surface air ... analysis of Antarctic krill density variations shows about 8-year variability as well. Correlation ... coefficient between krill density data and temperature anomalies is small (less 0.2) however is increased ...
Meeting Document : WG-EMM-11/41 : Author(s): G.P. Milinevsky, A.V. Grytsai and L.K. Pshenichnov (Ukraine)
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Spatial and temporal distribution of krill Euphausia superba biomass in the Ross Sea (1989/90, 1994/95)
- Januar 1990 and November- December 1994), presents how is spatial and temporal distribution of krill ... ) and moved towards North. All the time daytime was prevaled. Krill in aggregations both below ice and in ice ... , on the pieces of ices broke up by icebreaker, individuals of krill were observed, it can be supposed that below ... ice krill occurred mainly in scattered forms very close to surface. Aggregations of krill mainly ...
Meeting Document : WG-EMM-97/53 : Author(s): Kalinowski, J., Azzali, M.
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Distribution and abundance of krill in the vicinity of Elephant Island in the 1992 austral summer
Abstract: Krill distribution and abundance were estimated from four acoustic surveys, conducted ... a 60 by 35 n.mi. area immediately north of Elephant Island. During the first survey, krill were ... densities of krill were over the shelf extending to the northwest from Elephant Island and including ... the Seal Island archipelago; high densities of krill also extended off the shelf from the northeast end ...
Meeting Document : WG-CEMP-92/15 : Author(s): R.P. Hewitt and D.A. Demer (USA)
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Interannual variability of standardised index of krill abundance in Area 48 according to CCAMLR fishery statistics database
48.1-48.3 and SSMUs did not correspond to the dynamics of krill density and biomass distribution ... of the fishery and attractiveness of any SSMU for fleet operation will determined by the fishable part of krill ... biomass rather than the total krill biomass in the area. The high variability and different trends of CPUE ... distribution by Subareas and SSMUs, differences between spatial-temporal distributions of CPUE and krill ...
Meeting Document : WG-EMM-10/17 : Author(s): P.S. Gasyukov and S.M. Kasatkina (Russia)