Search results
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A conceptual model of Japanese krill fishery
Abstract: The behaviour patterns of Japanese krill fishery vessels in Area 48 were analysed using ... , krill density, krill, size, ice condition, transshipment, and salp-by catch accounted for 95.6 ... % of the changes. Although low krill density was the primary reason for changing fishing grounds, other seasonal ... succession of the Japanese krill fishing operation revealed that they tend to utilize fishing grounds close ...
Meeting Document : WG-EMM-05/30 : Author(s): S. Kawaguchi, S. Nicol (Australia), K. Taki and M. Naganobu (Japan)
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A conceptual model of the krill fishery
Abstract: The behaviour patterns of Japanese krill fishery vessels in Area 48 were analysed using ... , krill density, krill, size, ice condition, transshipment, and salp-by catch accounted for 95.6 ... % of the changes. Although low krill density was the primary reason for changing fishing grounds, other seasonal ... succession of the Japanese krill fishing operation revealed that they tend to utilize fishing grounds close ...
Meeting Document : WG-EMM-04/51 : Author(s): S. Kawaguchi, S. Nicol (Australia), K. Taki and M. Naganobu (Japan)
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On commercial significance of krill aggregations
Abstract: We made an attempt to estimate krill commercial biomass density within the fleet ... operation areas and compare it with critical density values for marine animals feeding on krill. The results ... and 2002 (2380 hauls). In the course of the recent twenty years, krill has been fished in the areas ... with biomass density of at least 100 g/m2. This threshold value of krill commercial biomass considerably ...
Meeting Document : WG-EMM-03/31 : Author(s): S.M. Kasatkina (Russia)
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CPUEs and body length of Antarctic krill during 1992/93 season in the fishing grounds north of Livingston Island
Abstract: This paper summaries Japanese krill catch data during austral summer in 1992/93 season ... values at the height of summer (late February- late March).Krill with modal length of 41-45mm were ... (Japan) Title: CPUEs and body length of Antarctic krill during 1992/93 season in the fishing grounds ... This paper summaries Japanese krill catch data during austral summer in 1992/93 season. A main ...
Meeting Document : WG-Krill-94/28 : Author(s): S. Kawaguchi, T. Ichii and M. Naganobu (Japan)
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Note on estimating abundance from acoustic data on individual krill aggregations
Abstract: The theoretical basis underlying estimation of krill abundance using echo-integration ... . It is concluded that the echo-integration approach is superior for the estimation of regional krill abundance ... (South Africa) Title: Note on estimating abundance from acoustic data on individual krill aggregations ... The theoretical basis underlying estimation of krill abundance using echo-integration ...
Meeting Document : WG-KRILL-91/20 : Author(s): I. Hampton and D.G.M. Miller (South Africa)
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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 ... 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 2008 from ...
Meeting Document : WG-EMM-08/32 : Author(s): M. Naganobu, T. Kitamura and K. Hasunuma (Japan)
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Impacts of rising sea temperature on krill increase risks for predators in the Scotia Sea
of Antarctic krill, Euphausia superba, might affect populations of krill and dependent predators (whales ... for predators by curtailing krill fishing at different points in the 21st century. The projected effects ... of ocean warming on krill biomass were strongest in the northern Scotia Sea, with a ≥ 40% decline ... in the mass of individual krill. Projections also suggest a 25% chance that krill biomass will fall below ...
Meeting Document : WG-EMM-18/P02 : Author(s): E.S. Klein, S.L. Hill, J.T. Hinke, T. Phillips and G.M. Watters
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Chinstrap penguins alter foraging and diving behaviour in response to krill size
to 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 ... the daytime. The average annual size of krill was negatively correlated to the number of penguins foraging ...
Meeting Document : WG-EMM-07/11 : Author(s): A.K. Miller and W.Z. Trivelpiece (USA)
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Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 on the basis of the Soviet mesoscale surveys with Isaacs Kidd midwater trawl
area of krill between Antarctic Peninsula and South Georgia Island are considered. Surveys including ... to the standard method by Isaacs Kidd Midwater Trawl in the layer 0-100 m. Krill biomass distribution (g/1000 m3 ... . The results of surveys confirm modern understanding of general pattern of krill distribution and drift ... -temporal stability of the krill distribution field with more higher biomass of aggregations was observed ...
Meeting Document : WG-EMM-98/32 : Author(s): V.A. Sushin and K.E. Shulgovsky (Russia)
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Multiple acoustic estimates of krill density at South Georgia during 2000/2001 reveal significant intra-annual and spatial variability
Abstract: Three separate acoustic surveys of Antarctic krill (Euphausia superba) were conducted ... extensive coverage around South Georgia. Krill density in the western box in the early-season survey ... that is consistent with observations from previous years, krill density in the western box mid-season was less than ... difference between the mean krill density derived from only those 4 transects surveyed early- and late-season ...
Meeting Document : WG-EMM-01/15 : Author(s): A.S. Brierley, C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst (United Kingdom)