AUTHOR=Danchenko Sergei , Dodge John David , Icely John David , Newton Alice 

TITLE=Dinoflagellate Assemblages in the West Iberian Upwelling Region (Sagres, Portugal) During 1994–2001

JOURNAL=Frontiers in Marine Science

VOLUME=9

YEAR=2022

URL=https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2022.591759

DOI=10.3389/fmars.2022.591759

ISSN=2296-7745

ABSTRACT=<p>Changes in the composition of dinoflagellates from 1994 to 2001 at a station influenced by wind-induced seasonal upwelling off SW Portugal were analyzed in relation to oceanography. 194 taxa of dinoflagellates were detected, the most frequent belonged to the genera <italic>Tripos, Protoperidinium, Dinophysis, Diplopsalopsis, Prorocentrum</italic> and <italic>Lingulodinium.</italic> The composition of dinoflagellate communities followed a seasonal pattern, in association with oceanographic forcing and change of upwelling conditions. Harmful species such as <italic>Dinophysis acuminata, D. acuta, D. caudata, Gonyaulax spp.</italic> and <italic>Lingulodinium polyedra</italic> were found to develop during the upwelling season, typically comprising summer and early autumn in the West Iberian upwelling system, and also occasionally in the conditions following upwelling events in other seasons.</p>