Résultats de la recherche
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Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia
categories delaying one further year (even when still paired). Grey-headed Albatrosses are essentially ... ) decreased. Black-browed Albatrosses follow an annual breeding cycle, with over 80% of birds successful in ... rearing a chick and 75% of those failing to do so returning to breed the next year, 5-10% of both ... Island, South Georgia for 17 consecutive years (1975-1991). Over this period almost all the Grey-headed ...
Meeting Document : SC-CAMLR-XII/BG/21 : Auteur(s): Delegation of United Kingdom
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New data on spawning, hatching and growth of the Kerguelen Islands Champsocephalus gunnari shelf stock
Abstract: Combined studies on the inner shelf and outer shelf of the Kerguelen islands (1989/90 ... programme allows to identify each year, both from the ichthyoplanktonic surveys and bottom trawlings, an ... annual cohort. Strong differences in abundance of larvae are observed yearly. One cohort seems dominant ... in the samples along the study. It would explain the previouly observed three years cycle. Spawners ...
Meeting Document : WG-FSA-94/9 Rev. 1 : Auteur(s): G. Duhamel (France)
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KRILL DENSITY ESTIMATES IN CCAMLR SUBAREA 48.6 BASED ON ACOUSTIC DATA COLLECTED DURING JANUARY–MARCH 2008
continuously on six frequencies along one west-east and two south-north transects between latitudes 50 and 66.4 ... distributed. The majority of the detected krill was distributed between 40 and 80 m depth, and approximately ... S in the sparsely studied CCAMLR subarea 48.6. The mean density of Antarctic krill, integrated to ... 14 % was distributed within a 100 x 100 km core area centered around the Bouvetøya. Author(s): G ...
Meeting Document : WG-EMM-09/45 : Auteur(s): G. Skaret, B.A. Krafft and R. Korneliussen (Norway)
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Aerobic dive limit: how often does it occur in nature?
animal is it’s aerobic dive limit (ADL). The ADL has only been measured in a few species. The goal of ... , deeper diving females made longer dives that approached or exceeded the cADL (P Author(s): D.P. Costa ...
Meeting Document : WG-EMM-00/48 : Auteur(s): D.P. Costa, N.J. Gales and M.E. Goebel (USA)
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Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia
categories delaying one further year (even when still paired). Grey-headed Albatrosses are essentially ... ) decreased. Black-browed Albatrosses follow an annual breeding cycle, with over 80% of birds successful in ... rearing a chick and 75% of those failing to do so returning to breed the next year, 5- 10% of both ... Island, South Georgia for 17 consecutive years (1975-1991). Over this period almost all the Grey-headed ...
Meeting Document : WG-CEMP-93/06 : Auteur(s): P.A. Prince, P. Rothery, J.P. Croxall and A.G. Wood (United Kingdom)
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Growth per molt of male snow crab Chionoecetes opilio from Conception and Bonavista Bays, Newfoundland
that 20 of these had molted once while the remainder molted twice. Two lines of evidence support this ... Abstract: Over 6000 male snow crabs were tagged during a 6-year period in Conception Bay ... , Newfoundland, in order to estimate the increase in size at the time of molting. Ninety-two animals were ... predicted the size after two molts in close agreement with a regression line fitted to data on double ...
Meeting Document : WS-CRAB-93/12 : Auteur(s): D.M. Taylor and J.M. Hoenig (USA)
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Commentaires et propositions concernant la mise en place de procédures de gestion de la pêcherie de krill dans la zone de la convention de la CCAMLR
under development for spatially distributing the catch will have on the fleet039;s performance ... management, FBM) is one of the priority tasks being undertaken by the Scientific Committee and WG-EMM in ... recent years. An integral part of developing an FBM should be studying the risks of impact that methods ... parameters. Author(s): Delegation of the Russian Federation Title: Comments and proposals concerning the ...
Meeting Document : SC-CAMLR-XXXIV/11 : Auteur(s): Делегация Российской Федерации
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Are krill recruitment indices from meso-scale survey representative for larger areas?
) and two-year old (R2) krill differ substantially between years. However, results were in conformity ... classes of the age-one-group which occur in the samples of some years. Author(s): V. Siegel (Germany ... for age-one-old krill between scientific surveys from the northern Bellingshausen Sea, the Elephant ... recruitment indices derived from these two mesoscale surveys and analyse whether results from mesoscale ...
Meeting Document : WG-EMM-02/20 : Auteur(s): V. Siegel (Germany), R.M. Ross and L.B. Quetin (USA)
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Contribution to the early life history of Channichthyidae from the Bransfield Strait and South Georgia
bimodal, formed by two separate length/age groups /Fig. 2/. Semi-transparent otoliths from postlarvae 38 ... them that C. gunnari from the South Georgia region grow faster in the first two years of life than ... considered to be fortnightly /Fig. 3/. Otoliths of juvenile C. gunnari /155-215 mm SL/ had one annulus ... with the results of Kock /1981/, as well as such estimate of growth of Chaenocephalus through year 1 ...
Meeting Document : CCAMLR/86/FA/08 : Auteur(s): W. Ślósarczyk (Poland)
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An update on the ageing of Antarctic toothfish, Dissostichus mawsoni, from East Antarctica and the Amundsen Sea
%). Sister pairs of Antarctic toothfish otoliths were also prepared, one using the ‘bake and embed’ method ... each method. The values of IAPE and CV were acceptable between the two methods of preparation for ... vessel in Subarea 88.2 in the 2014-2015 season and in Division 58.4.1 in the 2015-2016 season, were aged ... and the other by thin sectioning, in order to assess the comparability of age estimates derived from ...
Meeting Document : WG-FSA-17/15 : Auteur(s): G. Nowara, B. Farmer, T. Barnes, P. Ziegler and D. Welsford