Volcanic EruptionsGeologyGeological PhenomenaImage Processing, Computer-AssistedBeggiatoaAtlantic IslandsHeterotrophic ProcessesPhysical PhenomenaMagnetic PhenomenaMagnesium SilicatesMediterranean SeaPiscirickettsiaceaeHydrothermal VentsGeologic SedimentsLeptothrixPhysicsImage Interpretation, Computer-AssistedEcuadorMethaneHawaiiArchaeaDNA, ArchaealRadiographic Image EnhancementSeawaterGeographyRadiographic Image Interpretation, Computer-AssistedEcosystemImaging, Three-DimensionalBiodiversityDNA, RibosomalPhylogenyRNA, Ribosomal, 16SAlgorithmsBacteriaBiomassReproducibility of ResultsSubtraction TechniqueSequence Analysis, DNASensitivity and SpecificityTomography, X-Ray ComputedPattern Recognition, AutomatedDNA, BacterialMolecular Sequence DataDiagnostic ImagingObserver VariationContrast Media