Résultats de la recherche
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TIMING OF CLUTCH INITIATION IN PYGOSCELIS PENGUINS ON THE ANTARCTIC PENINSULA: TOWARDS AN IMPROVED UNDERSTANDING OF OFF-PEAK CENSUS CORRECTION FACTORS
statistical model for determining the peak of clutch initiation for any given year and site and, along with a ... , also includes many census counts with non-standard timing. The challenge is, therefore, to correct ‘off ... -peak’ census counts to make them comparable with current standard methods. Census correction involves ...
Meeting Document : WG-EMM-PSW-08/15 : Auteur(s): H.J. Lynch, W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece (USA)
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Oxygen and carbon stable isotopes in otoliths record spatial isolation of Patagonian toothfish (Dissostichus eleginoides)
capture area with 100% success, validating their use for distinguishing provenance and corroborating the ... as seawater temperature: low values in Patagonian Shelf fish were consistent with exposure to ... Antarctic Intermediate Water (AAIW), and high values in South Georgia fish were consistent with exposure to ...
Meeting Document : WG-FSA-08/P03 : Auteur(s): J.R. Ashford and C.M. Jones
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Acoustic discrimination of southern ocean zooplankton
upper 250 m of the water column. These layers were fished with a LonghurstHardy plankton recorder (LHPR ... originating from Antarctic krill Euphausia superba, with an overall correct classification rate of 77%. We ... therefore demonstrate that with the use of echo intensity data alone, gathered using hardware commonly ...
Meeting Document : WG-EMM-97/54 : Auteur(s): Watkins, J.L., Brierley, A.S., Goss, C., Ward, P.
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Report on scientific observations onboard the Chilean longliner, ‘Puerto Ballena’, in Statistical Subarea 48.3 from March to May 1996
associated with the longline operations. The catch of D. eleginoides was mainly comprised of specimens of 70 ... females with males becoming mature at a much smaller length. Black-browed albatrosses and white-chinned ... observer and the crew with black-browed albatrosses and white-chinned petrels forming the bulk of the by ...
Meeting Document : WG-FSA-96/22 : Auteur(s): Selling, J., Kock, K.-H.
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Foraging zones of the two sibling species of giant petrels in the Indian Ocean throughout the annual cycle: implication for their conservation
higher than interspecific ones, with females showing a greater distribution range than males in both ... months. These results have important conservation implications, with males and females facing different ... more likely to overlap with high sea longlining such as tuna fisheries. Author(s): L. Thiers, K ...
Meeting Document : WG-FSA-12/67 : Auteur(s): L. Thiers, K. Delord, C. Barbraud (France), R.A. Phillips (United Kingdom) and H. Weimerskirch (France)
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A preliminary stock assessment in SSRUS 486A, G: A Bayesian and CPUE based biomass dynamic model
area of 48.6 (SSRU 48.6A, 48.6G). Antarctic and Patagonian toothfish presented a high proportion with ... assessment model, it is highly recommendable to continue with the collection of the data by scientific ... with little information of abundance such as presented here. Author(s): R. Wiff, J.C. Quiroz (Chile ...
Meeting Document : WG-SAM-13/29 : Auteur(s): R. Wiff, J.C. Quiroz (Chile) and R. Scott (United Kingdom)
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Dynamic of the krill fishery in the Area 48 and its relation to climate variability and changes in fishing technology
. Standardization of CPUE values was calculated on the basis of generalized linear models method with mixed effects ... indices for the whole observation period 1985-2011. Analysis of krill fishery indices obtained with using ... different fishing technologies revealed that the “high CPUEs” regime is not associated with the changes in ...
Meeting Document : WG-EMM-13/25 : Auteur(s): P.S. Gasyukov and S.М Kаsatkina (Russia)
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An assessment of the use of ocean gliders to undertake acoustic measurements of zooplankton: the distribution and density of Antarctic krill in the Weddell Sea
survey boxes showed features coherent with ship-borne measurements, with peak densities in both boxes ... monitoring. With appropriate survey design, gliders can be used for estimating krill distribution and ...
Meeting Document : WG-EMM-14/P02 : Auteur(s): D. Guihen, S. Fielding, E. Murphy, K. Heywood and G. Griffiths
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The annual random stratified trawl survey in the waters of Heard Island (Division 58.5.2) to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari for 2015
2015, with the completion of 163 stations, an additional five stations compared with previous surveys ... invertebrates in the 2015 survey was 4.6 t, with the most abundant taxa being jellyfish and the poriferan ... this year meant that 333 sets of otoliths were collected for L. squamifrons, 499 for C. rhinoceratus ...
Meeting Document : WG-FSA-15/11 : Auteur(s): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)
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Detection of growth zones in the eyestalk of the Antarctic krill Euphausia superba (Dana, 1852) (Euphausiacea)
increased with increasing body length, although there were differences between sexes. Females tended to have ... narrower growth zones from the third zone and onwards compared with males. Data show that male subadult ... and a verification of the ageing procedure from krill with a known age is needed before the number of ...
Meeting Document : WG-EMM-16/P02 : Auteur(s): B.A. Krafft, M. Kvalsund, G. Søvik, E. Farestveit and A.-L. Agnalt