Reference : A dynamic model of an experimental bloom of coccolithophores Emiliania huxleyi
Scientific congresses and symposiums : Unpublished conference
Life sciences : Aquatic sciences & oceanology
Life sciences : Environmental sciences & ecology
http://hdl.handle.net/2268/83876
A dynamic model of an experimental bloom of coccolithophores Emiliania huxleyi
English
Joassin, Pascal mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
Borges, Alberto mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique >]
Chou, Lei [Laboratoire d’Océanographie Chimique et Géochimie des Eaux, Faculté des Sciences, Université Libre de Bruxelles, B-1050 Brussels, Belgium > > > >]
Delille, Bruno mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique >]
Engel, Anja [Alfred Wegener Institute for Polar and Marine Research, D-27515 Bremerhaven, Germany > > > >]
Harlay, Jérôme mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique >]
Jacquet, Stéphan [Station INRA d’Hydrobiologie Lacustre, UMR Cartell, BP 511, 74203 Thonon, France > > > >]
Riebesell, Ulf [Alfred Wegener Institute for Polar and Marine Research, D-27515 Bremerhaven, Germany > > > >]
Rochelle-Newall, Emma [Laboratoire d’Océanographie, Université Mixte de Recherche (UMR) 7093, Centre National de la Recherche Scientifique- Université Pierre et Marie Curie (CNRS-UPMC), BP 28, 06234 Villefranche-sur-mer Cedex, France > > > >]
Zondervan, Ingrid [Alfred Wegener Institute for Polar and Marine Research, D-27515 Bremerhaven, Germany > > > >]
Soetaert, Karline [NIOO-CEME, Nederlands Instituut voor Ecologie (NIOO-KNAW), Korringaweg 7 - 4401 NT Yerseke, The Netherlands > > > >]
Gattuso, Jean-Pierre [Laboratoire d’Océanographie, Université Mixte de Recherche (UMR) 7093, Centre National de la Recherche Scientifique- Université Pierre et Marie Curie (CNRS-UPMC), BP 28, 06234 Villefranche-sur-mer Cedex, France > > > >]
Grégoire, Marilaure mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
27-Nov-2007
No
No
International
The 6th European Conference on Ecological Modelling, ECEM'07
27-30 November 2007
http://www.isemna.org/
Trieste
Italy
[en] A dynamic model has been developed to represent biogeochemical events observed during an experimentally induced bloom of coccolithophores Emiliania huxleyi. This bloom occurred in a mesocosm experiment (Bergen 2001 experiment) during which ecosystem development was followed over a 23-days period through changes of the stocks of inorganic nutrients (nitrate, ammonium and phosphate), dissolved inorganic carbon and pCO2, O2 concentration, pigments, particulate organic carbon and nitrogen, dissolved organic carbon, the production of Transparent Exopolymeric Particles (TEP), primary production, alkalinity, calcification and particulate inorganic carbon. The dynamic model is based on unbalanced algal growth and balanced growth for bacteria as described in Van den Meersche et al. (2004). In addition, in order to adequately reproduce the observations, the model has been extended by including an explicit description of calcification, T.E.P production and an enhanced mortality due to viruses. This last process, based on a critical promiscuity between cellular hosts and viral agents, successfully contributed to reproduce the bloom extinction as observed in the mesocosm experiment.

This model will be implemented in a coupled physical-biogeochemical model of the Black Sea ecosystem in the framework of the EU Sesame project and in the Gulf of Biscay in the frame of the Belgian PEACE project.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/83876

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