Related by context. Frequent words. (Click for all words.) 69 isotope ratios 60 isotopic 59 isotopic composition 58 oxygen isotopes 57 marine sediments 57 Fig. 1A 56 elemental composition 55 stable isotope 55 radiocarbon 54 Supplementary Fig 54 arsenate 54 diatom 54 colorimetric 53 otolith 53 atmospheric methane 53 abundances 52 inorganic compounds 52 histidine 52 naturally occuring 52 iron oxides 52 foraminifera 52 leucine 52 electron density 52 morphological 52 sorption 52 biogenic 51 infrared spectroscopy 51 #ppb [003] 51 monazite 51 spinel 50 Fig. 1B 50 fluxes 50 physicochemical 50 goethite 50 zircons 50 spatial scales 50 microfossils 50 elegans 50 biogeochemical 50 bile acid 50 forcings 50 nitrogen fixation 50 odorants 49 anionic 49 atmospheric CO2 concentrations 49 myoglobin 49 morphologies 49 terrestrial ecosystems 49 metastable 49 taxa 49 aerosol particles 49 otoliths 49 mol 49 amphipods 49 absorbance 49 genotypic 49 karyotype 49 diatoms 49 monomeric 49 upper troposphere 49 lake sediments 49 carbon isotope 49 osmium 49 phosphine 48 anisotropy 48 mycorrhizal fungi 48 organochlorines 48 Xenopus 48 noble gases 48 sexual dimorphism 48 phytoplankton blooms 48 allelic 48 mtDNA 48 planktonic 48 trehalose 48 Enterococcus 48 phytate 48 MgO 48 photochemistry 48 quantitative PCR 48 atmospheric CO 48 acidic soils 48 microstructural 48 isoprene 48 GPa 48 marine invertebrates 48 histopathologic 47 hydroxyl 47 analyte 47 aragonite 47 sulphates 47 morphologic 47 faunal 47 PCR amplification 47 ppm U 47 Soil samples 47 atmospheric nitrogen 47 toxicant 47 serum concentrations 47 bilayer 47 betaine