PhytoplanktonEutrophicationHost SpecificityDiatomsFresh WaterSeawaterZooplanktonSpecies SpecificityOceans and SeasHarmful Algal BloomHost-Parasite InteractionsAtlantic OceanHaptophytaPhylogenyBiomassEcosystemMolecular Sequence DataSensitivity and SpecificityPlanktonYuccaOceanographySymbiosisSulfonium CompoundsRoseobacterDinoflagellidaFood ChainSubstrate SpecificitySequence Analysis, DNALakesBiodiversitySeasonsWater MovementsRiversChlorophyllPacific OceanCopepodaPopulation DynamicsHost-Pathogen InteractionsEukaryotaPopulation DensityMarine BiologyBase SequenceChrysophytaAmino Acid SequenceCryptophyta