Data/hora: 05/06/2024 18:26:21

Provedor de dados: | 5
País: | France

Título:

Modélisation des blooms de Gymnodinium mikimotoï le long de la façade atlantique française : répartition spatiale

Modelling of Gymnodinium mikimotoï blooms along the French Atlantic coast: geographical and vertical distributions

Autores: | Loyer, Sophie; Lazure, Pascal; Gentien, Patrick; Menesguen, Alain.
Data: | 2001
Ano: | 2001
Palavras-chave: | Turbulence; Dinoflagellés; Gymnodinium mikimotoï; Modèle; Nutriments; Turbulence; Dinoflagellate; Gymnodinium mikimotoï; Model; Nutrients.
Resumo: | In order to study the occurrence of Gymnodinium mikimotoï bloom on the French Atlantic coast, a three-dimensional model of primary production was set up. The biological model was coupled to a hydrodynamic model previously developed at Ifremer, by the intermediary of transport, diffusion and heat fluxes. The cycles of three limiting elements for the phytoplankton growth were modelised: nitrogen, phosphorus and silicon. The second phase of the study aimed at reproducing the summer dinoflagellate blooms. In this new approach a model of the species Gymnodinium mikimotoï was coupled with the previous biomass model which provides the physical and chemical environments. The study focuses on the results obtained by this specific sub-model. The parametrisation was based on some physiological studies reported from laboratory cultures and on parameters existing in the literature. Consistent with the observations, the model reproduces the sub-surface cell concentrations, in the zone of minimal turbulence. The formulation retained for the temperature effect on the growth rate leads to a strong influence of temperature on the onset of the bloom and the mortality rate controls the vertical distribution. Nevertheless, as formulated here, the model underestimates the cell density.
Tipo: | Text
Idioma: | Francês

Identificador:

https://archimer.ifremer.fr/doc/00479/59100/61738.pdf

DOI:10.1051/hydro:2001006

https://archimer.ifremer.fr/doc/00479/59100/

Editor: | EDP Sciences
Formato: | application/pdf
Fonte: | Hydroécologie Appliquée (1147-9213) (EDP Sciences), 2001 , Vol. 13 , N. 1 , P. 57-76

Fonte:

info:eu-repo/semantics/openAccess

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