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Título: | Evidence of in situ diel vertical migration of a red-tide microplankton species in Ria de Vigo (NW Spain) |
Autor: | Villarino, María Luisa CSIC; Figueiras, F. G. CSIC ORCID ; Jones, K. J.; Álvarez-Salgado, Xosé Antón CSIC ORCID ; Richard, J.; Edwards, A. | Fecha de publicación: | 1995 | Editor: | Springer Nature | Citación: | Marine Biology 123(3): 607-617 (1995) | Resumen: | The migration capacity of red-tide species in the natural environment was studied at a station in the Ría de Vigo (Rías Bajas, NW Spain) over a 24 h period in September 1991. The Ría de Vigo, where red tides are frequent, normally shows a positive estuarine circulation and is subjected to seasonal upwelling and downwelling phenomena. A marked diel pattern was observed for five species that are capable of causing red tides (Ceratium furca, Scrippsiella trochoidea, Dinophysis acuminata, Mesodinium rubrum, and Eutreptiella sp.). Such diel behaviour could be clearly advantageous in a stratified environment where light and nutrients are often in two separate layers. Active movement enables species such as dinoflagellates and some ciliates to exploit high levels of irradiance at the surface during the day and to take up nutrients in deeper layers at night. Patchy distribution of phytoplankton, shear-induced horizontal dispersion and density variations were considered, but none of them accounted for the vertical changes observed. Vertical migration is thought to be one of the mechanisms that could promote blooms in nutrient-depleted surface layers. | Descripción: | 11 páginas, 2 tablas, 10 figuras | Versión del editor: | hhtp://dx.doi.org/10.1007/BF00349239 | URI: | http://hdl.handle.net/10261/59926 | DOI: | 10.1007/BF00349239 | ISSN: | 0025-3162 | E-ISSN: | 1432-1793 |
Aparece en las colecciones: | (IIM) Artículos |
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