Oxygen IsotopesIsotopesCarbon IsotopesNitrogen IsotopesRhamnusMyrtusPaleontologyIsotope LabelingCarbonPlant TranspirationOceans and SeasRainCarbon DioxidePlant LeavesPhotosynthesisEcosystemWaterBody CompositionZinc IsotopesSulfur IsotopesDeuteriumIron IsotopesStrontium IsotopesFatty AcidsRadioisotope Dilution TechniqueMass SpectrometryAmino AcidsIndicator Dilution TechniquesKineticsPhospholipidsGas Chromatography-Mass SpectrometryBase CompositionLipidsDietDeuterium OxideBacteriaMolecular Sequence DataChromatography, GasEvolution, PlanetaryMercury IsotopesBody WaterAdipose TissueNitrogenGeologic SedimentsBody WeightMembrane LipidsHydrogenHydrogen-Ion ConcentrationMeteoroidsCattleChromatography, LiquidOils, VolatileTemperatureCholesterolRadioisotopesAmino Acid SequencePhylogenySpecies SpecificityCarbohydratesOxidation-ReductionCarbon RadioisotopesChromatography, High Pressure LiquidMolecular WeightElectrophoresis, Polyacrylamide GelTime FactorsBiodiversityModels, BiologicalLipid MetabolismRNA, Ribosomal, 16SAtmosphereProteomicsGeological PhenomenaTritiumChromatography, Thin LayerSeawaterProteinsFood ChainDietary FatsEnergy MetabolismFatty Acids, UnsaturatedTandem Mass SpectrometryLiverModels, ChemicalGeologyChemical FractionationBiotaMetagenomePhosphatidylcholinesMagnetic Resonance SpectroscopySwinePlant OilsFecesAnimal FeedSoilIntestinal AbsorptionFood AnalysisZinc RadioisotopesAbsorptiometry, PhotonVolcanic EruptionsMeat