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Progress towards validation of ageing of Dissostichus eleginoides using otoliths
, fish have been treated with strontium to mark their otoliths for validation of subsequent age ... annuli on the otoliths after the strontium mark was consistent with the time at liberty of the fish after ... marking. Current and future work on age validation is designed to address outstanding problems with age ...
Meeting Document : WG-FSA-04/67 : Автор(ы): K. Krusic-Goluband R. Williams (Australia)
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Effect of missing modes on calibration sphere target strengths (ICES CM 1996/b: 37, Fish Capture Committee)
hypothesis is investigated in the context of reported experimental calibration trials with the SIMRAD EK500 ... tungsten carbide with 6% cobalt binder. Theoretical target strengths are computed for each sphere for the ... computed target strengths are compared with the corresponding experimental values. The working hypothesis ...
Meeting Document : WG-EMM-96/46 : Автор(ы): Foote, K.G.
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Dynamic model of krill Euphausia superba swarm
insects appear to disperse according to a reaction diffusion model with a constant diffusion coefficient ... . It was found that the vertical density pattern of krills' swarm, with a mean density of up to ... 1000 individuals/m3, is consistent with the insect model predictions. That is why cohesive forms of ...
Meeting Document : WG-EMM-95/68 : Автор(ы): Kalinowski, J., Azzali, M.
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Remarks on natural mortality of Dissostichus eleginoides in Subarea 48.3
Abstract: With samples originated in the Chilean longline fishery of Dissostichus eleginoides of ... the considered cases with the different growing parameters, with the exception of the case of fishing ...
Meeting Document : WG-FSA-92/21 Rev. 1 : Автор(ы): C.A. Moreno and P.S. Rubilar (Chile)
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RAPID WARMING OF THE OCEAN AROUND SOUTH GEORGIA,SOUTHERN OCEAN, DURING THE 20TH CENTURY: FORCINGS, CHARACTERISTICS AND IMPLICATIONS FOR LOWER TROPHIC LEVELS
20th century but there are few locations with data before the 1950s. In addition, assessments of change ... in this region are hampered by the strong seasonal bias in sampling, with the vast majority of data ... century, with differential warming between summer and winter months and an indication that late 20th ... changes in heat fluxes associated with the SAM. In addition, we consider the implications that long-term ...
Meeting Document : WG-EMM-08/P03 : Автор(ы): M.J. Whitehouse, M.P. Meredith, P. Rothery, A. Atkinson, P. Ward and R.E. Korb
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Zonal structure of zooplankton communities in the Southern Ocean south of Australia: results from a 2150 km continuous plankton recorder transect
were measured at 1-min intervals in conjunction with CPR samples. Additional physical data for the ... strongly correlated with frontal/oceanographic zones. These assemblages appeared to be structured by a ... with the seasonal ice zone, south of the northern SACCF. Although Euphausia superba larvae were a ... component of both of these assemblages, this species, together with appendicularia, was most abundant south ...
Meeting Document : WS-BSO-07/P6 : Автор(ы): Hunt, B.P.V. and G. Hosie
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Unusual breeding by seabirds at Marion Island during 1997/98
species with an intermediate foraging range that eat mainly crustaceans, macaroni Eudyptes chrysolophus ... chicks of rockhopper penguins fledged with a slightly heavier mass than in other years. However, for both ... /99) breeding season. The unusual breeding by most of the seabirds coincided with the El Niño Southern ... Oscillation (ENSO) event of 1997/98. This synchrony contrasts with lagged responses to ENSO events of seabirds ...
Meeting Document : WG-EMM-03/13 : Автор(ы): R.J.M. Crawford, C.M. Duncombe Rae, D.C. Nel and J. Cooper (South Africa)
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INCORPORATING SAMPLING VARIATION AND RANDOM READER ERROR INTO CALCULATION OF EFFECTIVE SAMPLE SIZE IN THE APPLICATION OF AGE LENGTH KEYS TO ESTIMATION OF CATCH-AT-AGE PROPORTIONS
accounts for both the variation associated with sub-sampling of the random length frequency (LF) sample for ... Monte Carlo multinomial replicates of the observed age length key (ALK) with each ALK used to generate a ... % to 10%. When random ageing error was combined with sampling error the corresponding values were lower ... , with a corresponding range of around 4 down to 1. This reduction is due to the way the ageing error ...
Meeting Document : WG-SAM-09/08 : Автор(ы): S.G. Candy (Australia)
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DATA QUALITY ASSESSMENT IN CCAMLR: REQUIREMENTS FOR MINIMUM INTEGRITY TESTING TO ENSURE THAT DATA ARE FIT FOR PURPOSE
upon the different requirements for the data, together with a recognition that, however thorough a ... errors and discrepancies are resolved in consultation with data owners/originators and, where possible ... review/reconciliation procedure with Members to ensure that CCAMLR data are consistent and current with ...
Meeting Document : WG-SAM-09/05 : Автор(ы): Secretariat
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The biology and ecology of mackerel icefish, Champsocephalus gunnari – an Antarctic fish species that lack haemoglobin
exploited since the beginning of the 1970's with reported annual catches exceeding 50- 100 000 tomes in ... some years. Champsocephalus gunnari has many characteristics typical of Antarctic fish species with ... ability to reproduce at an early age coupled with a comparatively high fecundity and growth performance ... capacity to rebuild than species with the slower reproductive rates common in other notothenioids. Author(s ...
Meeting Document : WG-FSA-96/24 : Автор(ы): Everson, I., Kock, K.-H.
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