Reference : A study of the diatom-dominated microplankton summer assemblages in coastal waters fr...
Scientific journals : Article
Life sciences : Aquatic sciences & oceanology
http://hdl.handle.net/2268/19814
A study of the diatom-dominated microplankton summer assemblages in coastal waters from Terre Adélie to the Mertz Glacier, East Antarctica (139°E–145°E)
English
Beans, Cristina [Université de Liège - ULG > Département des sciences et gestion de l'environnement > Océanologie > > >]
Hecq, Jean-Henri mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
Koubbi, Philippe [Université de Paris VI, Paris, France > > Laboratoire d'Océanographie de Villefranche-sur-Mer > > >]
Vallet, Carole [Université du Littoral Côte d'Opale, France > > Laboratoire d'Océanologie et de géoscience > >]
Wrigth, Simon [Austraslian Government Antarctic Division, Australia > > > >]
Goffart, Anne mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
2008
Polar Biology
Springer Science & Business Media B.V.
31
9
1101-1117
Yes (verified by ORBi)
International
0722-4060
New York
NY
[en] Antarctica ; Terre Adelie ; phytoplankton ; Diatoms
[en] In January 2004 the microplankton community from the coastal waters of Terre Adélie and Georges V Land (139°E - 145°E) was studied. Results showed a diatom-dominated bloom with chlorophyll a levels averaging 0.64 µg.l-1 at 5m depth (range 0.21 - 1.57 µg.l-1). Three geographic assemblages of diatoms were identified, based on principal diatom taxa abundances. The stratified waters near the Mertz Glacier presented highest phytoplankton biomasses (0.28 - 1.57 µg Chl a.l-1 at 5m) and diatom abundances (6 507 - 70 274 cells.l-1 at 5m), but low diversity, dominated by Fragilariopsis spp. Lower biomasses (0.38 – 0.94 µg Chl a.l-1 at 5m) and abundances (394 – 9 058 cells.l-1 at 5m) were observed in the mixed waters around the Astrolabe Glacier with a diverse diatom community characterised by larger species Corethron pennatum and Rhizosolenia spp. Finally an intermediate zone between them over the shallower shelf waters of the Adélie Bank represented by Chaetoceros criophilus, where biomasses (0.21 - 0.35 µg Chl a.l-1 at 5m) and abundances (1 190 - 5 431 cells.l-1 at 5m) were lowest, coinciding with the presence of abundant herbivorous zooplankton.
Centre Interfacultaire de Recherches en Océanologie - MARE
Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy
Pelagant, contract EV/12/30A
Researchers ; Students
http://hdl.handle.net/2268/19814

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