Article (Scientific journals)
Response of primary production and calcification to changes of pCO(2) during experimental blooms of the coccolithophorid Emiliania huxleyi
Delille, Bruno; Harlay, Jérôme; Zondervan, Ingrid et al.
2005In Global Biogeochemical Cycles, 19 (2)
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Abstract :
[en] [1] Primary production and calcification in response to different partial pressures of CO2 (PCO2) ("glacial,'' "present,'' and "year 2100'' atmospheric CO2 concentrations) were investigated during a mesocosm bloom dominated by the coccolithophorid Emiliania huxleyi. The day-to-day dynamics of net community production (NCP) and net community calcification (NCC) were assessed during the bloom development and decline by monitoring dissolved inorganic carbon (DIC) and total alkalinity ( TA), together with oxygen production and 14 C incorporation. When comparing year 2100 with glacial PCO2 conditions we observed: ( 1) no conspicuous change of net community productivity (NCPy); ( 2) a delay in the onset of calcification by 24 to 48 hours, reducing the duration of the calcifying phase in the course of the bloom; ( 3) a 40% decrease of NCC; and ( 4) enhanced loss of organic carbon from the water column. These results suggest a shift in the ratio of organic carbon to calcium carbonate production and vertical flux with rising atmospheric PCO2.
Disciplines :
Environmental sciences & ecology
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Delille, Bruno  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Harlay, Jérôme ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Zondervan, Ingrid;  Alfred Wegener Institute for Polar and Marine Research
Stephan, Jacquet;  UMR Cartell > Station INRA d’Hydrobiologie Lacustre
Chou, Lei;  Université Libre de Bruxelles > Laboratoire d’Océanographie Chimique et Géochimie des eaux
Wollast, Roland;  Université Libre de Bruxelles > Laboratoire d’Océanographie Chimique et Géochimie des eaux
Bellerby, Richard G. J.;  University of Bergen > University of Bergen
Frankignoulle, Michel;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Borges, Alberto  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Riebesell, Ulf;  University of Kiel > Leibniz Institute for Marine Sciences
Gattuso, Jean-Pierre;  UMR 7093 CNRS-Université de Paris 6 > Laboratoire d’Océanographie de Villefranche
Language :
English
Title :
Response of primary production and calcification to changes of pCO(2) during experimental blooms of the coccolithophorid Emiliania huxleyi
Publication date :
02 June 2005
Journal title :
Global Biogeochemical Cycles
ISSN :
0886-6236
eISSN :
1944-9224
Publisher :
Amer Geophysical Union, Washington, United States - Washington
Volume :
19
Issue :
2
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
UiB - University of Bergen [NO]
DG RDT - Commission Européenne. Direction Générale de la Recherche et de l'Innovation [BE]
BELSPO - Politique scientifique fédérale [BE]
FRFC - Fonds de la Recherche Fondamentale Collective [BE]
Commentary :
An edited version of this paper was published by AGU. Copyright (2005) American Geophysical Union. Delille, B., et al. (2005), Response of primary production and calcification to changes of pCO2 during experimental blooms of the coccolithophorid Emiliania huxleyi, Global Biogeochem. Cycles, 19, GB2023, doi:10.1029/2004GB002318.
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