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Tidal cycle control of biogeochemical and ecological properties of a macrotidal ecosystem ArchiMer
Cadier, Mathilde; Gorgues, Thomas; Lhelguen, Stephane; Sourisseau, Marc; Memery, Laurent.
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...
Tipo: Text Palavras-chave: Macrotidal ecosystem; Spring; Neap tidal cycle; Semidiurnal cycle; Phytoplankton communities; Diversity; Competition.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00395/50612/51325.pdf
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