Résultats de la recherche
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Monitoring krill population variability using seabirds and seals at South Georgia – new samplers provide new insights
has provided the basis for a re-evaluation of the role of recruitment variability and high rates of ... predators at Bird Island over the past decade has provided evidence for a relationship between sea-surface ... information on the key life-history parameters of prey species that are fundamental to reducing uncertainty in ...
Meeting Document : WG-EMM-04/63 : Auteur(s): K. Reid, E.J. Murphy, J.P. Croxall and P.N. Trathan (United Kingdom)
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Operational interactions between cetaceans and the Patagonian toothfish (Dissostichus eleginoides) industrial fishery off Southern Chile
fishing grounds are also traditional feeding grounds for sperm whales. Monetary loss associated with ... operational interactions associated with predation reach USD$92,684 (C.I. 95% USD$47.302- $153.745) for the ... (Dissostichus eleginoides) fishery were assessed in southern Chile through 7 surveys with observers on board ...
Meeting Document : WG-FSA-03/95 : Auteur(s): R. Hucke-Gaete, C.A. Moreno and J.A. Arata (Chile)
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Oxygen and carbon stable isotopes in otoliths record spatial isolation of Patagonian toothfish (Dissostichus eleginoides)
approach for examining population structure and provenance. To test this, whole otoliths were taken from ... capture area with 100% success, validating their use for distinguishing provenance and corroborating the ... Patagonian toothfish (Dissostichus eleginoides) sampled off the Patagonian Shelf and South Georgia, on either ...
Meeting Document : WG-FSA-08/P03 : Auteur(s): J.R. Ashford and C.M. Jones
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Distribution of Soviet commercial fleet at krill fishery in the South Orkneys subarea (Subarea 48.2) during 1989/90
during 1989/90 season (totally 3614 hauls for the period from 1.11.1989 to 12.06.1990 are presented ... aggregation, existed for about 25 days, commercial vessels returned to Coronation Island. Krill drift velocity ... estimated on the basis of fishing ground shift velocity, amounted to 7.4 km/day or 8.7 cm/sec. The above ...
Meeting Document : WG-EMM-97/50 : Auteur(s): Sushin, V.A.
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Larval development and spawning ecology of euphausiids in the Ross Sea and its adjacent waters in 2004/05
no juveniles occurred concurrently. Thus the slope does not appear to be a nursery ground for this ... and adult stages. The onset of deepening was from early and later frucilia stages onward for E ... Thysanoessa spp. were widely distributed within the oceanic to slope areas but did not occur on the shelf as ...
Meeting Document : WG-EMM-10/P06 : Auteur(s): K. Taki, T. Yabuki, Y. Noiri, T. Hayashi and M. Naganobu
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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of relative mortality and tag-detection rates
number’ on the vertical axis (these numbers were allocated at random and are the same for each figure ... , by controlling for the spatial and temporal confounding factors using a case-control study design, we ...
Meeting Document : WG-FSA-12/47 Rev. 1 : Auteur(s): S. Mormede and A. Dunn (New Zealand)
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Changing status of three notothenioid fish at the South Shetland Islands (1983–2016) after impacts of the 1970–80s commercial fishery
Potter Cove, King George Islands/ Isla 25 de Mayo, in a 33-year effort to monitor recovery. N. rossii and ... (3) a high abundance of N. coriiceps. Reasons for lack of recovery in G. gibberifrons remain obscure ... commercially fished. Under the regulation of CCAMLR, commercial fishing for finfish in the South Shetland ... with trends reported in seabirds that feed on juveniles of these notothenioids: decrease in the areas ...
Meeting Document : WG-FSA-17/P01 : Auteur(s): E. Barrera-Oro, E. Marschoff and D. Ainley
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Growth of Antarctic krill Euphausia superba at South Georgia
may result in 2 year-old krill at South Georgia attaining the same size as 3 year old krill in the ... of krill has important implication for comparing the fate of individual cohorts over large scales and ... Antarctic Peninsula region. The effect of geographical variation in growth rate on the population structure ...
Meeting Document : WG-EMM-01/18 : Auteur(s): K. Reid (United Kingdom)
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Distribution of mackerel icefish by size-group at South Georgia
surveys between 1986 and 2000 using data from representative, randomly located hauls. The data set for ... increased. The size range of all year classes was contained within the sampling depth of the surveys. The ... into size groups representative of age-classes. Kruskal-Wallis tests on log-transformed median ...
Meeting Document : WAMI-01/16 : Auteur(s): A.W. North and I. Everson (United Kingdom)
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Hook selectivity in the longline fishery of Dissostichus eleginoides (Nototheniidae) off the Chilean coast
as the number of the straight hook increases (for example from 4 to 3) or when they change from ... size of hooks used in the longlines. Original data obtained during 1991 on the coast of Valdivia, South ...
Meeting Document : WG-FSA-91/11 : Auteur(s): C.A. Moreno (Chile)