Citation: Raine, R., Joyce, B., Patching, J.W., Jones, K. & Richard, J. 1993 Upwelling around the southwest Irish coast: near-surface dynamics and blooms of the dinoflagellate Gyrodinium cf Aureolum (Hulbert). In , , pp. . International Council for the Exploration of the Sea, Copenhagen
Series Title: 81st ICES Statutory Meeting, Dublin, Ireland
Keywords: Marine, Plankton
Abstract: An upswelling system has been described for coastal waters around southwest Ireland. Exceptional blooms, or red tides, of the dinoflagellate Gyrodinium aureolum have frequently occurred in the region which have an origin in the adjacent shelf waters. The advection of these blooms towards the coast is a result of surface wind effects, which are more obvious in the large embayments of southwest Ireland which are axial to the prevailing south-westerly winds. In addition, this organism accumulates at the frontal zones between upwelled water and the adjacent stratified shelf waters, effectively a situation where the pycnocline is forced toward the sea surface. The role of upwelling in promoting extensive populations of G. aureolum is examined. In particular, relationships between surface wind stress and both upwelling and surface advective bloom transport are discussed.