Résultats de la recherche
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Surface water masses, primary production, krill distribution and predator foraging in the vicinity of Elephant Island during the 1989-90 austral summer
Abstract: Four successive surveys of the pelagic marine environment were conducted over a 100-by ... were collected to describe the thermohaline structure, the distribution of phytoplankton biomass and ... primary productivity, the distribution and demography of krill, and the foraging patterns of krill ... predators. A hydrographic front, north of Elephant Island and aligned southwest-to-northeast, persisted ...
Meeting Document : WG-CEMP-90/11 : Auteur(s): A.F. Amos, J.L. Bengtson, O. Holm-Hansen, V.J. Loeb, M.C. Macaulay and J.H. Wormuth (USA)
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Larval development and spawning ecology of euphausiids in the Ross Sea and its adjacent waters in 2004/05
Abstract: The horizontal and vertical distributions of larvae and reproductive timing of ... . Occurrences of larvae of Euphausia frigida and E. triacantha were confined to the northern oceanic area where ... distribution further southward to the area where cooler Lower Circumpolar Deep Water prevailed. Larvae of ... juvenile or adult stages. Eggs and larvae of E. superba occurred with gravid females along the slope, but ...
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
CCAMLR of a number of toothfish fisheries in Antarctica, but the evaluation of tagging performance has ... been thus far inconclusive because the confounding effect of factors such as time and location of ... tagging, and size of fish tagged, makes meaningful comparisons between vessels difficult. We propose that ... can derive meaningful indices of relative performance of groups of fishing effort (e.g. vessel, trip ...
Meeting Document : WG-FSA-12/47 Rev. 1 : Auteur(s): S. Mormede and A. Dunn (New Zealand)
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Estimating the abundance of pack-ice seals off east Antarctica
Abstract: A survey was undertaken to provide estimates of the abundance of crabeater, Ross and ... leopard seal populations in 1,500,000 km2 of pack-ice off east Antarctica between longitudes 60-150oE ... . Sighting surveys were undertaken along almost 10,000 km of survey transect from an icebreaker and two ... helicopters to estimate the density of seals hauled out on the ice in survey strips. The probability of ...
Meeting Document : WG-EMM-05/23 : Auteur(s): C. Southwell (Australia), D. Borchers, C. Paxton (United Kingdom), B. de la Mare (Canada), P. Boveng (USA), A.S. Blix and E.S. Nordoy (Norway)
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Preliminary assessment of Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
Abstract: A preliminary assessment of yield of Patagonian Toothfish, Dissostichus eleginoides ... result of a randomly stratified trawl survey completed between 16 April and 10 May 2003. The 2003 ... estimate of abundance of recruits indicates a continuation of a period relatively low recruitment since ... preliminary estimate of sustainable long-term yield assessed using the standard method. The preliminary ...
Meeting Document : WG-FSA-03/33 : Auteur(s): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)
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The ‘CAML/SCAR-MarBIN Biogeographic Atlas of the Southern Ocean’
Abstract: The "CAML / SCAR-MarBIN Biogeographic Atlas of the Southern Ocean" Claude De ... of primary importance for monitoring biodiversity and detecting impacts of environmental changes ... , developing the bio/ecoregionalisation of the Southern Ocean, designing marine protected areas, conducting ... comparative biogeographic analyses or discovering marine biodiversity hotspots. At the end of five years of ...
Meeting Document : WS-MPA-11/15 : Auteur(s): C. De Broyer (Belgium) and P. Koubbi (France)
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The food and feeding ecology of the white-chinned petrel Procellaria aequinoctialis at South Georgia
Abstract: The diet of the white-chinned petrel at Bird Island, South Georgia was studied during ... the chick-rearing period in 1986 by quantitative analysis (by weight, frequency of occurrence and ... number of individuals) of regurgitated or lavaged adult stomach contents. Antarctic krill was the most ... important constituent of the diet, comprising over 90% of prey items and forming 47% of the diet by weight ...
Meeting Document : WG-CEMP-94/14 : Auteur(s): J.P. Croxall, A.J. Hall, H.J. Hill, A.W. North and P.G. Rodhouse (United Kingdom)
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Catch rates and length composition data of the longline fishery for Dissostichus eleginoides at the Prince Edward Islands: 1996/97
Abstract: The first reports of commercial catches of Patagonian toothfish Dissostichus ... eleginoides made in the vicinity of the Prince Edward Islands, a South African territory in the Indian Ocean ... Sector of the Southern Ocean, surfaced early in 1996. This generated both national and international ... interest in the fishery leading to a great influx of vessels to the area. By the end of 1996 up to 40 ...
Meeting Document : SC-CAMLR-XVI/BG/28 : Auteur(s): Delegation of South Africa
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Assessments of by-catch in trawl fisheries at Heard and MacDonald Islands
Abstract: This paper provides an assessment of the long-term annual yield for three species ... undertaken with the aim of examining the potential for the commercial trawl fisheries to significantly affect ... the spawning biomass of these stocks in the longer term. The long-term annual yield for each of the ... literature. The second part of the analysis examined the amount of each species caught in the commercial ...
Meeting Document : WG-FSA-97/30 : Auteur(s): de la Mare, W.K., Williams, R., Constable, A.
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Pre-spawning and spawning biology of the Patagonian toothfish, Dissostichus eleginoides, around South Georgia (Subarea 48.3)
Abstract: Samples gathered from research expeditions of the longliners Medvezhy (April-June 1986 ... ) as well as Maksheevo and Mirgorod (June-July 1992) have produced new data on the biology of the ... reproductive part of the Dissostichus eleginoides population in Subarea 48.3. Analysis and synthesis of these ... data have established the bathymetric distribution patterns for different size-groups of toothfish ...
Meeting Document : WG-FSA-92/13 : Auteur(s): I.N. Konforkin and A.N. Kozlov (VNIRO, Moscow, Russia)