| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Tidal cycle control of biogeochemical and ecological properties of a macrotidal ecosystem
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| Autores: |
Cadier, Mathilde
Gorgues, Thomas
Lhelguen, Stephane
Sourisseau, Marc
Memery, Laurent
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| Data: |
2017-08
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| Ano: |
2017
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| Palavras-chave: |
Macrotidal ecosystem
Spring
Neap tidal cycle
Semidiurnal cycle
Phytoplankton communities
Diversity
Competition
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| Resumo: |
In some regions, tidal energy can be a key factor in the generation of variability in physical and biogeochemical properties throughout the water column. We use a numerical model resolving tidal cycles and simulating diversity in phytoplankton to assess the impact of tidal mixing on vertical stability and phytoplankton community (total biomass and diversity) in a macrotidal sea (Iroise Sea, France). Two different time scales have been considered: semi-diurnal and spring/neap tidal cycles. Our results show that the latter is the one primarily influencing the phytoplankton growth conditions by modifying the vertical stratification. During spring tide, the growth is rather light-limited whereas neap tide conditions lead to vertical stabilization and better light conditions in the shallow surface layer. The transition from high to low tidal mixing conditions is thus associated with a total phytoplankton biomass increase (caused by the rapid development of fast-growing diatoms) and reduced phytoplankton diversity.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00395/50612/51325.pdf
DOI:10.1002/2017GL074173
http://archimer.ifremer.fr/doc/00395/50612/
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| Editor: |
Amer Geophysical Union
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| Formato: |
application/pdf
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| Fonte: |
Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2017-08 , Vol. 44 , N. 16 , P. 8453-8462
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| Direitos: |
2017 American Geophysical Union. All rights reserved.
info:eu-repo/semantics/openAccess
restricted use
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