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A mathematical modelling of bloom of the coccolithophore Emiliania huxleyi in a mesocosm experiment
Joassin, Pascal; Delille, Bruno; Soetaert, K. et al.
2008
 

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Abstract :
[en] A dynamic model has been developed to represent biogeochemical variables and processes observed during a bloom of Emiliania huxleyi coccolithophore. This bloom was induced in a mesocosm experiment during which the ecosystem development was followed over a period of 23-days through changes in various biogeochemical parameters such as inorganic nutrients (nitrate, ammonium and phosphate), total alkalinity (TA), dissolved inorganic carbon (DIC), partial pressure of CO[SUB]2[/SUB] (pCO[SUB]2[/SUB]), dissolved oxygen (O[SUB]2[/SUB]), photosynthetic pigments, particulate organic carbon (POC), dissolved organic carbon (DOC), Transparent Exopolymer Particles (TEP), primary production, and calcification. This dynamic model is based on unbalanced algal growth and balanced bacterial growth. In order to adequately reproduce the observations, the model includes an explicit description of phosphorus cycling, calcification, TEP production and an enhanced mortality due to viral lysis. The model represented carbon, nitrogen and phosphorus fluxes observed in the mesocosms. Modelled profiles of algal biomass and final concentrations of DIC and nutrients are in agreement with the experimental observations.
Disciplines :
Environmental sciences & ecology
Aquatic sciences & oceanology
Author, co-author :
Joassin, Pascal ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Delille, Bruno  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Soetaert, K.;  Centre for Estuarine and Marine Ecology, Netherlands Institute of Ecology, Yerseke, The Netherlands
Borges, Alberto  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Chou, L.;  Laboratoire d'Oceanographie Chimique et Geochimie des Eaux, Universite Libre de Bruxelles, Campus de la Plaine, Brussels, Belgium
Engel, A.;  Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
Gattuso, J*-P;  Observatoire oceanologique de Villefranche-sur-mer, Villefranche-sur-mer, France
Harlay, Jérôme ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Riebesell, U.;  Leibniz Institute of Marine Sciences, IFM-GEOMAR, Kiel, Germany
Suykens, K.;  Unite d'Oceanographie Chimique, Interfacultary Centre for Marine Research, Universite de Liege, Institut de Physique (B5), 4000 Liege, Belgium
Grégoire, Marilaure  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Language :
English
Title :
A mathematical modelling of bloom of the coccolithophore Emiliania huxleyi in a mesocosm experiment
Publication date :
01 February 2008
Available on ORBi :
since 07 February 2011

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