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dc.contributor.author
Baudry, Jérémy  
dc.contributor.author
Dumont, Dany  
dc.contributor.author
Schloss, Irene Ruth  
dc.date.available
2019-10-21T21:43:16Z  
dc.date.issued
2018-07-30  
dc.identifier.citation
Baudry, Jérémy; Dumont, Dany; Schloss, Irene Ruth; Turbulent mixing and phytoplankton life history: A Lagrangian versus Eulerian model comparison; Inter-Research; Marine Ecology Progress Series; 600; 30-7-2018; 55-70  
dc.identifier.issn
0171-8630  
dc.identifier.uri
http://hdl.handle.net/11336/86778  
dc.description.abstract
Phytoplankton dynamics models follow either an Eulerian or a Lagrangian approach. The Eulerian formulation assumes that all individuals of a population living in homogeneous environmental conditions, i.e. within a model grid cell, are in a single average physiological state, which generally depends on local conditions. By tracking each individual cell or cluster of cells, the Lagrangian formulation allows population behaviour to emerge from a broader range of individual physiological states inherited from different life histories. In order to determine in which mixing conditions the widely used Eulerian approach differs from a more representative but also more computationally costly Lagrangian formulation, we compared the results obtained from a simple 1-dimensional phytoplankton growth model using both formulations under various mixing conditions. The chosen model is based on Droop kinetics, where growth is a function of light and an internal nutrient cell quota. It is applied in cases with constant and uniform diffusivity, and in more realistic cases of wind-induced and tidal mixing. The 2 main outcomes of our study are: (1) results from both formulations converge in weakly stratified environments for any level of turbulent mixing, and (2) results diverge in stratified environments and intermediate mixing up to a diffusivity value above which the environment appears homogeneous to moving cells, and both formulations converge. These results suggest that in heterogeneous and dynamic marine environments, strong variability among individuals may prevent Eulerian models from accurately predicting phytoplankton production.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Inter-Research  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
BIOGEOCHEMISTRY  
dc.subject
INDIVIDUAL BASED MODELLING  
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INTRAPOPULATION VARIABILITY  
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POPULATION BASED MODELLING  
dc.subject.classification
Otras Ciencias Naturales y Exactas  
dc.subject.classification
Otras Ciencias Naturales y Exactas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Turbulent mixing and phytoplankton life history: A Lagrangian versus Eulerian model comparison  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-10-17T14:07:18Z  
dc.journal.volume
600  
dc.journal.pagination
55-70  
dc.journal.pais
Alemania  
dc.journal.ciudad
Oldendorf  
dc.description.fil
Fil: Baudry, Jérémy. Institut des Sciences de la Mer de Rimouski; Canadá. Université du Québec à Rimouski; Canadá  
dc.description.fil
Fil: Dumont, Dany. Institut des Sciences de la Mer de Rimouski; Canadá. Université du Québec à Rimouski; Canadá  
dc.description.fil
Fil: Schloss, Irene Ruth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de Tierra del Fuego; Argentina  
dc.journal.title
Marine Ecology Progress Series  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/abstracts/meps/v600/p55-70/  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3354/meps12634