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La flore diatomique de quelques sédiments tourbeux holocènes desîles Kerguelen

Published online by Cambridge University Press:  01 February 2009

B. Van de Vijver
Affiliation:
Université d'Anvers, Département de Biologie, Section Ecologie arctique et Paléobiologie, Groenenborgerlaan 171, B-2020 Anvers, Belgique University of Antwerp (RUCA), Department of Biology, Section Arctic Ecology, Limnology And Paleobiology, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
L. Beyens
Affiliation:
Université d'Anvers, Département de Biologie, Section Ecologie arctique et Paléobiologie, Groenenborgerlaan 171, B-2020 Anvers, Belgique
J. C. Gloaguen
Affiliation:
UMR 6553 CNRS, Université de Rennes I, Laboratoire d'Ecologie Végétale, Campus de Beaulieu, F-35042 Rennes Cedex, France
Y. Frenot
Affiliation:
UMR 6553 CNRS, Université de Rennes I, Station Biologique de Paimpont, F-35380 Plélan-Le-Grand, France
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Abstract

Cette étude de la flore diatomique subfossile dulçaquicole de la Grande Terre (Iles Kerguelen) a été réalisée à partir de six prélèvements effectués sur des dépôts tourbeux mis à jour après le retrait du Glacier Ampère, à l'ouest de l'archipel. Au total, 107 taxons de diatomées (84 espèces, 22 variétés et 1 forme) ont été observés. On constate une grande similitude entre cette flore subfossile, datant d'environ 1000, 5000 ou 10000 ans BP, et la flore diatomique actuelle des Iles Kerguelen. La biogéographie de cette flore et les similitudes avec la flore d'autres îles antarctiques sont brièvement discutées.

Type
Research Article
Copyright
© Université Paul Sabatier, 1998

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