Search results
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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 : Author(s): 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 : Author(s): K. Reid, J. Watkins, J. Croxall and E. Murphy (UK)
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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 : Author(s): 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 : Author(s): 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 : Author(s): 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 : Author(s): Delegations of Norway, China and Chile
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Otolith chemistry reveals local population structure of Antarctic toothfish (Dissostichus mawsoni) within the CCAMLR Subarea 48.6
Abstract: Antarctic toothfish Dissostichus mawsoni is an important fish species with ecological ... with ontogeny and different between spawning/hatching ground and the area that fish captured. Otolith ... chemistry with combining to oceanography and tagging data may provide more accurate information on ...
Meeting Document : WG-FSA-18/75 : Author(s): L. Wei, G.P. Zhu, S. Somhlaba, X.Y. Yu and M. Duan
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Report of the UK Groundfish Survey at South Georgia (CCAMLR Subarea 48.3) in January/February 2019
calculated at 50,897 tonnes with a lower 1-sided 95% interval estimate of 30,288 tonnes. This is lower than ... in 2017, but is comparable with the long term average. The highest catches were on the moraine banks ... of the two northern strata and at the western end of Shag Rocks, with one high catch recorded in the ...
Meeting Document : WG-FSA-2019/20 : Author(s): S. Gregory, P. Hollyman, T. Earl, A. Clement, J. Visagie, L. Featherstone and M. Belchier
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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 : Author(s): L.J. López Abellán y J.F. González Jiménez
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region
. 4 (Spec. 1): 224-246. DIMMLER, W. and T.H. KLINDT. 1990. A new electronic system for the rectangular ... midwater trawl (RMT). Mar. Bioi. 107: 345-348. ETTERSHANK, G. 1984. A new approach to the assessment ... Webs. Berlin, Heidelberg, New York: Springer. pp 304-307 . HEYWOOD, R.B., I. EVERSON and J. PRIDDLE ... (Eds.): Antarctic Nutrient Cycles and Food Webs. Berlin, Heidelberg, New York: Springer. pp 362-371 ... Meteor along the Antarctic Peninsula from 26 December 1989 to 14 January 1990. Results were compared with ... data of an identical survey with RV Polarstern in 1987/88. Seasonal variation between summer and winter ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Author(s): Siegel, V.