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The status of krill (Euphausia superba DANA) resources in CCAMLR Statistical Divisions 58.4.2 and 58.4.3 from 1988 to 1990. Results of acoustic surveys
paper. It was found that the increase in krill biomass observed in the area in 1990 is linked with the ... abundant 1986 and 1987 year-classes and with a diminished rate of emigration of krill of these year-classes ... in krill biomass observed in the area in 1990 is linked with the abundant 1986 and 1987 year-classes ... and with a diminished rate of emigration of krill of these year-classes from the area in 1989/1990 ... bridge device with a working frequency of 136 kHz. A copper ball, 26 mm in diameter, was used to ... LogL Two types of trawls were used for kriU sampling: an Isaacs-Kidd midwater trawl with a 6.0 sq. m ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 163–173 : Автор(ы): Bibik, V.A. and V.N. Yakovlev
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Informe de la campaña de investigación biológico-pesquera de palangre de fondo en aguas del Atlántico sur-oriental y en los sectores Atlántico e índico de la CCRVMA (Subárea 48.6 y División 58.4.4)
toothfish (D. eleginoides) with 2822 individuals (83.24 %). Macrourus carinatus was the second species in ... to increase length with depth seems to be somehow disturbed by inflections or alterations related to ... be related to the beginning of migratory movements that make them inaccessible to fishing with bottom ... stratum with highest catch per unit effort was that of 600-800 m though absolute values varied between ...
Meeting Document : WG-FSA-98/48 : Автор(ы): L.J. López Abellán y J.F. González Jiménez
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Research plan for toothfish in Divisions 58.4.4a and b by Shinsei Maru No. 3 in 2011/12
2010/11 fishing season with the aims of providing the data required for assessments of the population ... to continue the mark-recapture experiment in SSRUs B and C in the 2011/12 season, with nearly same ... , tagging rate of 5 fish / ton will be conducted. The comparison test with the experimental gear, which ...
Meeting Document : WG-SAM-11/07 : Автор(ы): Delegation of Japan
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Modelling Southern Ocean krill population dynamics: biological processes generating fluctuations in the South Georgia ecosystem
. The krill population model was combined with a size-based selection function and used to generate ... model solutions with the predator diet data indicates that the model can reproduce the observed pattern ... fluctuations observed during some years. Low krill abundance was associated with reduced representation of the ...
Meeting Document : WG-EMM-01/53 : Автор(ы): E. Murphy and K. Reid (United Kingdom)
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Krill population dynamics at South Georgia 1991–1997, based on data from predators and nets
scientific nets from the same area over the summers of 1991-1997. In comparing the 5 years with both predator ... sampling the same overall krill population. Greatest similarity results from comparing net samples with ... and thereafter increased steadily to 1997. Using these data in conjunction with putative size/age ...
Meeting Document : WS-AREA 48-98/15 : Автор(ы): K. Reid, J. Watkins, J. Croxall and E. Murphy (UK)
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Models of tag shedding for double tagging as a function of time at liberty and approximate solutions for the single tagging model in CASAL
software applies this model correctly for fish released with a single tag but does not have the facility at ... present to correctly apply the KW model for fish released with two tags. The solution of Dunn et al. (2005 ... combined with a sensitivity analysis that varies the KW constant rate parameter in CASAL assessments ...
Meeting Document : WG-SAM-11/12 : Автор(ы): S.G. Candy (Australia)
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OCEANIC CIRCUMPOLAR HABITATS OF ANTARCTIC KRILL
view that krill require high food concentrations, with a distribution often linked to shelves. For a ... , with 70% of the total stock concentrated between 0o and 90oW. Within this Atlantic sector, krill are ... evidence for a compensating southwards migration, with an increasing proportion of krill found south of the ...
Meeting Document : WG-EMM-08/P04 - Abstract : Автор(ы): A. Atkinson, V. Siegel, E. A. Pakhomov, P. Rothery, V. Loeb, R.M. Ross, L.B. Quetin, K. Schmidt, P. Fretwell, E.J. Murphy, G.A. Tarling and A.H. Fleming
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THE POWER OF ECOSYSTEM MONITORING
monitoring programme of the predators of Antarctic krill Euphausia superba at South Georgia together with a ... % power after 20 years with the probability of a type I error (α) = 0.05). The power increased to >50 ... % when α was increased to 0.2 when the ability to detect change was greater with the predator response ...
Meeting Document : WG-EMM-08/P11 : Автор(ы): K. Reid, J.P. Croxall and E.J. Murphy
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The use of electronic monitoring camera system for the toothfish fishery in CCAMLR Subarea 48.3: a study case to help CCAMLR
requires considerable effort and cost with mixed results. For example it is not always possible to achieve ... divided in settings and hauling operations where at-sea observations were matched with video footage ... by a scientific observer was compared with recorded video footage recorded by 3 different video ...
Meeting Document : WG-FSA-14/27 : Автор(ы): R.A. Benedet (United Kingdom)
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An approach to feedback management (FBM) of the krill fishery based on routine acoustic data collection and intermittent land-based predator studies
. As the trigger level lacks any form of relationship with the actual stock condition this approach is ... strictly not in line with the CCAMLR ecosystem approach to management. FBM has been considered an ... can be integrated with finer-scale knowledge of top predator feeding strategies and updated through ...
Meeting Document : SC-CAMLR-XXXVI/BG/20 : Автор(ы): Delegations of Norway, China and Chile
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