Search results
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Biomass of Antarctic krill (Euphausia superba) off east Antarctica (30–80°E) in January–March 2006
, integrated to 250 m depth across the survey area (1,566,157 km 2), was 10.15 g m-2. The total biomass was ... relatively weak aggregations (s A <100 m 2 nmi-2 for each 2 km-alongtrack integration interval), with 50 ... % of integration intervals containing backscattering values <10 m 2 nmi-2. Half of the biomass was ...
Meeting Document : WG-EMM-06/16 : Author(s): T. Jarvis, E. van Wijk, N. Kelly, S. Kawaguchi and S. Nicol (Australia)
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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
high and where numerous observations of elevated krill abundance have been made. Box 2 was located to ... caused by diel vertical migration. Echoes were integrated in 2 m depth bins from 2 to 250 m below the ... mm for box 1 and 32.0 mm for box 2 were determined. Thresholded (mvbs 120 kHz minimum-100 dB) 120 and ... 38 kHz) into those attributable to krill (δmvbs between 2 and 12 dB), small zooplankton (δmvbs > ...
Meeting Document : WG-EMM-96/18 : Author(s): Watkins, J.L., Murray, A.W.A., Brierley, A.S.
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Glider-based estimates of Antarctic krill in Bransfield Strait, and the West shelf off Livingston Island, Antarctica
-December 2018 and mid-March 2019. We compare mean biomass density (g m-2) estimates derived from gliders to ... from 350 glider profiles was 25.0 g m-2, compared with the mean biomass density of 28 g m-2 collected ... estimated from two repeat glider surveys were 61.04 and 104.1 g m-2. Mean biomass density estimates from ... broad-scale surveys conducted by the U.S. AMLR Program were 55 and 43 g m-2, for January and February ...
Meeting Document : WG-EMM-2019/13 : Author(s): C. Reiss, A. Cossio, G. Cutter, J. Walsh and G. Watters
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Estimates of primary production by ice algae and phytoplankton in the coastal ice-covered area near Syowa Station, Antarctica
-2 h-1 in June to 13.3 E m-2 h-1 in December. Relative light intensity estimated at the bottom of sea ... and ice. Maximum daily production of ice algae (34 mgC m-2 day-1) and phytoplankton (450 mgC m-2 day-1 ... and phytoplankton was 3.5 and 17 gC m-2, respectively. These results indicate that summer ...
Meeting Document : WG-KRILL-93/28 : Author(s): H. Satoh, K. Watanabe and T. Hoshiai (Japan)
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Modelling egg and larval transport of Antarctic toothfish (Dissostichus mawsoni) in the East Antarctic region: preliminary result using satellite data
Abstract: Using two different surface geostrophic filed data (A-1: without and A-2: with temporal ... 2-year simulation. From the result of the BB region, while strong self retention on the BB was ... observed in the experiment A-1, the majority of particles were advected eastward in the experiment A-2. A ... experiment A-2 because of effects of temporal eddy activities. In the northern continental slope region, most ...
Meeting Document : WG-FSA-2019/63 : Author(s): M. Mori, K. Mizobata, T. Okuda and T. Ichii
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Net-based verification of acoustic techniques used to identify Antarctic krill
' using an SDWBA-derived range for Sv120-3, (iii) '2 freq 2-16'- with an Sv120-38 range ... of 2-16 dB and (iv) '2 freq 2-12'-with an Sv120-38 range of 2-12 dB The '3 freq model ... freq 2-16' algorithms correctly identified all the aggregations as krill. However, different krill ...
Meeting Document : SG-ASAM-09/04 : Author(s): J. Watkins and S. Fielding (United Kingdom)
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Seasonal variation in acoustic estimates of krill density at South Georgia during 2001/2002
Antarctic Survey regularly since 1996. Krill density in November was low (5 g m-2), higher in both the two ... surveys in January (46g m-2 and 72 g m-2) and had decreased to 12 g m-2 by May. Our repeated surveys at ...
Meeting Document : WG-EMM-02/39 : Author(s): C. Goss, S.A. Grant, N. Cunningham, J.L. Watkins, P.N. Trathan, E. Murphy and K. Reid (United Kingdom)
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GROUNDFISH SURVEY IN CCAMLR SUB-AREA 48.3 IN APRIL 2008 WITH PRELIMINARY ASSESSMENT OF MACKEREL ICEFISH
of 30,050. Catch-weighted length frequencies indicated that icefish population was dominated by 2 ... the 1+ fish produced yield of 3445 tonnes in Year 1 (2008/09) and 2318 tonnes in Year 2 (2009/10). In ... Scenario 2, in which the 1+ fish were excluded and biomass adjusted accordingly, yields were 3372 and 2248 ... tonnes in Years 1 & 2 respectively. The Patagonian toothfish population was dominated by the same ...
Meeting Document : WG-FSA-08/28 : Author(s): M.A. Collins, R.E. Mitchell, C.E. Main, J. Lawson, J. Watts, J. Slakowski, L. Featherstone and O. Rzewuski (UK)
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East Antarctica Planning Domain MPA Planning Reference Document #1: Draft MPA Report Part 1 – the Planning Domain and Candidate MPAs
planning domain and candidate MPAs (WG-EMM-14/48, Sections 1, 2, and 3), Part 2- Description of the ... provides the first part, with the following sections: (1) Introduction, (2) Objectives for the planning ... ) Identification of candidate MPAs, (6) Analysis of outcomes, (7) Data holdings at the Secretariat. Parts 2 & 3 ...
Meeting Document : SC-CAMLR-XXXIII/BG/38 : Author(s): Delegations of Australia and France
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Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons
Abstract: Data collected from the FN American Champion during Phases 1 and 2 of the experimental ... fit to CPUE and cumulative catch data from the Phase 2 depletion experiments did not have significant ... local abundances of P. spinosissima. Approximately 6000 crabs were tagged and released during Phase 2 ... and density were made for the area around Phase 2's third depletion square. The assumptions of ...
Meeting Document : WG-FSA-96/34 : Author(s): Watters, G.