Search results
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Mesoscale abundance of fish in a ‘box’ west of Elephant Island
. AMLR) Program, conducted an investigation of an 7 x 10 nm ‘box’ between 100 and 300 m depth to the west ... were found in a comparatively small band primarily along the 200 m isobath (160–240 m). Length ... in the stratum 200– 300 m. Author(s): K.-H. Kock (Germany), C.D. Jones (USA), J. Appel (Germany), G. von ... , conducted an investigation of an 7 x 10 nm ‘box’ between 100 and 300 m depth to the west of Elephant Island ...
Meeting Document : WG-FSA-02/21 : Author(s): K.-H. Kock (Germany), C.D. Jones (USA), J. Appel (Germany), G. von Bertouch (CCAMLR Secretariat), D.F. Doolittle (USA), M. la Mesa (Italy), L. Psenichnov (Ukraine), R. Riehl (Germany), T. Romeo (Italy), S. Schöling (Germany) and L. Zane (Italy)
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Descriptive analysis of mesopelagic backscatter from acoustic data collected in the Ross Sea
centred on about 200 m and 400 m depth, and a diffuse deep scattering layer centred at 750 m depth ... shallower than 100 m. Near bottom marks were associated with areas shallower than 1000 m on the Ross Sea ... of the key scatterers. Marks shallower than 100 m depth were typically much stronger on 120 kHz than on 38 ... . Schools and layers at 200–400 m depth showed a more consistent response across all three frequencies ...
Meeting Document : WG-EMM-06/11 : Author(s): R.L. O’Driscoll (New Zealand)
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Surface areas of seabed within the 500 m isobath for regions within the South Shetland Islands (Subarea 48.1)
- 100 m, 101-200 m, 201-300 m, 301-400m, 401-500 m) were computed. Areas were calculated based on true ... of seabed within the 500 m isobath for six levels of depth strata (0-50 m, 51 - 100 m, 101-200 m, 201 -300 ...
Meeting Document : WG-FSA-98/14 : Author(s): C.D. Jones, S.N. Sexton and R.E. Cosgrove III (USA)
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A revised assessment of the impact of the krill fishery on penguins in the South Shetlands
and penguins. Krill biomass was estimated to be as large as 200-1500 xl03 tonnes within the preferred fishing ... areas during the breeding season. Compared with the level of biomass (≥200 xl03 tonnes) and its ... variability (the order of 100 xl03 tonnes/half-month period), the present catch rate (≤13 xl0 3 tonnes/half ... . Krill biomass was estimated to be as large as 200-1500 xl03 tonnes within the preferred fishing areas ...
Meeting Document : WG-Joint-94/17 : Author(s): T. Ichii, M. Naganobu and T. Ogishima (Japan)
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By-catch of juvenile Champsocephalus gunnari in krill fishery on the shelf of South Georgia Island
m depth with a maximum density observed at depth between 100 and 200 m. High catches of C. gunnari ... with a maximum density observed at depth between 100 and 200 m. High catches of C. gunnari juveniles were ...
Meeting Document : WG-FSA-92/06 : Author(s): G.A. Frolkina, V.I. Latogursky, V.A. Sushin (Russian Federation)
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Update on the analysis of fish by-catch in the krill fishery using data from the CCAMLR Scheme of Scientific Observation
7 were Channichthids). The modal size class of the fish taxa for which >100 length measurements were ... indicate that a 200 000 t krill catch might be expected to contain of the order of 40t of C. gunnari ... Channichthids). The modal size class of the fish taxa for which >100 length measurements were available all ... that a 200 000 t krill catch might be expected to contain of the order of 40t of C. gunnari and 38t ...
Meeting Document : WG-EMM-14/31 Rev. 1 : Author(s): Secretariat
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Observation on the interactions between marine mammals and mid-water krill trawl
. The inner-trawl observation was made using an Underwater IP Camera, while sea surface observation ... observation was made using an Underwater IP Camera, while sea surface observation was conducted visually ...
Meeting Document : WG-FSA-2019/60 : Author(s): Y. Ying, G. Fan, X. Zhao, J. Zhang, X. Wang and J. Zhu
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Fish by-catch in the krill fishery: 2017 update
Abstract: Data on fish by-catch in the krill fishery from commercial catch data (100 153 hauls ... in both datasets. The length-frequency distribution of all taxa for which >200 fish were measured had ... Data on fish by-catch in the krill fishery from commercial catch data (100 153 hauls) and CCAMLR ... frequently reported in both datasets. The length-frequency distribution of all taxa for which >200 fish ...
Meeting Document : WG-FSA-17/04 : Author(s): CCAMLR Secretariat
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DISTRIBUTION OF KRILL AT THRESHOLD DENSITIES SUITABLE FOR FISHING IN THE ATLANTIC SECTOR: ANALYSIS OF THE 2000 SYNOPTIC SURVEY DATA
integration units where the threshold density for fishing was set at 100 gm2 following Kasatkina (2003 ... ). 3. This was also true with other threshold values in the range 25 to 200 gm2 although the difference was smaller ... where the threshold density for fishing was set at 100 gm2 following Kasatkina (2003). 3. This was also ... true with other threshold values in the range 25 to 200 gm2 although the difference was smaller ...
Meeting Document : WG-EMM-08/16 : Author(s): S. Hill and D. Agnew (United Kingdom)
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Krill biomass estimates for two survey boxes to the north east and north-west of South Georgia in January 1996: the beginning of a five-year monitoring program
Abstract: Acoustic surveys were carried out in January 1996 within two 100 x 80 km boxes located ... James Clark Ross using a Simrad EK500 echo-sounder operating at 38, 120 and 200 kHz. These surveys were ... migration. Echoes were integrated in 2 m depth bins from 2 to 250 m below the transducers, over 100 second ... for box 2 were determined. Thresholded (mvbs 120 kHz minimum-100 dB) 120 and 38 kHz echo signal pairs were ...
Meeting Document : WG-EMM-96/18 : Author(s): Watkins, J.L., Murray, A.W.A., Brierley, A.S.