DinoflagellidaShellfish PoisoningMarine ToxinsSaxitoxinHarmful Algal BloomShellfishMediterranean SeaCrassostreaEutrophicationRoseobacterSeawaterPhytoplanktonCopepodaProteobacteriaExpressed Sequence TagsDNA, RibosomalSequence Analysis, DNAPhylogenyDNA, ProtozoanRNA, Ribosomal, 16SSpecies SpecificityMolecular Sequence DataEcosystemDNA, Bacterial