Search results
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Key considerations for planning a large-scale krill survey
management (FBM) approaches for the krill stock in subareas 48.1 to 48.4. These approaches include some which ... needs reliable indicators of krill stock size at appropriate spatial scales. It is likely that future ... FBM approaches will require regular information on krill stock size at relatively fine spatial scales ... ) might also play a role in the future management of the krill fishery. Such surveys provide an indication ...
Meeting Document : WG-EMM-15/27 : Author(s): S. Hill, J. Watkins (United Kingdom), O.R. Godø (Norway), S. Kawaguchi (Australia), D. Kinzey, C. Reiss (USA), V. Siegel (Germany), P. Trathan (United Kingdom) and G. Watters (USA)
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Aggregation patterns of pelagic predators and their principal prey, Antarctic krill, near South Georgia
distribution of their principal prey, Antarctic krill Euphausia superba Dana. One novel aspect of our analysis ... is an explicit consideration of the separation in space between swarms of krill and aggregations of predators ... that feed upon krill. 2. Our data were collected in February 1986, during a systematic shipboard survey ... transects, and krill abundance was simultaneously estimated using a hull-mounted echosounder. 3. We ...
Meeting Document : WG-CEMP-93/13 : Author(s): R.R. Veit (USA), E.D. Silverman (USA) and I. Everson (United Kingdom)
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Biology, distribution and abundance of Antarctic krill (Euphausia superba) and by-catch
Abstract: During the First Indian Antarctic Krill Expedition (FIKEX), krill samples were ... Midwater Trawl (IKMT), 49.5m krill midwater trawl (Cosmos trawl Denmark) and 42m Polish krill midwater ... was observed to be 1:l.17 though it differs from swarm to swarm. The analysis showed that 47% of krills ... of krill and availability of food in the area surveyed. Maturity stage IV (fully matured) was maximum among ...
Meeting Document : WG-EMM-98/37 : Author(s): A. Anrose, Z. Klusek, M.K.R. Nair and M. R. Bhoopendranath (India)
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Analysis of observer coverage for Japanese krill fishing vessels
Abstract: Sources of variability of krill mean length and fish bycatch number was investigated ... to explore proper allocation of scientific observers on Japanese krill fishing vessels using the data from ... had the largest impacts, and year coverage had moderate impacts on CV for both mean krill length ... and fish bycatch. The impacts of subarea and haul coverage were different between krill length and fish ...
Meeting Document : WG-SAM-10/17 : Author(s): T. Okuda, M. Kiyota and H. Okamura (Japan)
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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