36026921.Pdf
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Digital.CSIC J. Phycol. 43, 965–977 (2007) Ó 2007 Phycological Society of America DOI: 10.1111/j.1529-8817.2007.00392.x SPECIES-SPECIFIC PHYSIOLOGICAL RESPONSE OF DINOFLAGELLATES TO QUANTIFIED SMALL-SCALE TURBULENCE1 Elisa Berdalet2, Francesc Peters Institut de Cie`ncies del Mar, CSIC, Passeig Marı´tim 37-49, E-08003 Barcelona, Catalunya, Spain V. Lila Koumandou Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 1QW, UK Cristina Rolda´n, O`scar Guadayol, and Marta Estrada Institut de Cie`ncies del Mar, CSIC, Passeig Marı´tim 37-49, E-08003 Barcelona, Catalunya, Spain Turbulence has been shown to alter different aspects of the physiology of some dinoflagellates. The response appears to be species-specific and Field and laboratory studies on several dinoflagel- dependent on the experimental design and setup late species have led to the hypothesis that this used to generate small-scale turbulence. We exam- group of phytoplankton is especially sensitive to ined the variability of the response of three dinofla- small-scale turbulence (Wyatt and Horwood 1973, gellate species to the turbulence, following the same Estrada et al. 1987, Peters and Marrase´ 2000, last experimental design used by Berdalet (1992) on review by Berdalet and Estrada 2005). Dinoflagel- Akashiwo sanguinea (Hirasaka) Ge. Hansen et Moest- lates may proliferate in a diversity of habitats includ- rup (=Gymnodinium nelsonii G. W. Martin). In all ing frontal areas (Estrada and Blasco 1979, Smayda experiments, turbulence was generated by an orbital and Reynolds 2001), but the occurrence of dino- shaker at 100 rpm, which corresponded on bulk aver- flagellate red tides appears to be favored by calm age, to dissipation rates (e, quantified using an acous- 2 )3 weather and water-column stability (Wyatt and tic Doppler velocimeter) of 2cm Æ s .
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