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Methane-consuming archaebacteria in marine sediments
Large amounts of methane are produced in marine sediments but are then consumed before contacting aerobic waters or the atmosphere. Although no organism that can consume methane anaerobically hasExpand
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Comparative Analysis of Methane-Oxidizing Archaea and Sulfate-Reducing Bacteria in Anoxic Marine Sediments
ABSTRACT The oxidation of methane in anoxic marine sediments is thought to be mediated by a consortium of methane-consuming archaea and sulfate-reducing bacteria. In this study, we compared resultsExpand
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A Serpentinite-Hosted Ecosystem: The Lost City Hydrothermal Field
The serpentinite-hosted Lost City hydrothermal field is a remarkable submarine ecosystem in which geological, chemical, and biological processes are intimately interlinked. Reactions between seawaterExpand
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Fractionation of hydrogen isotopes in lipid biosynthesis
Isotopic compositions of carbon-bound hydrogen in individual compounds from eight diAerent organisms were measured using isotope-ratio-monitoring gas chromatography‐mass spectrometry. This techniqueExpand
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The carbon cycle and associated redox processes through time
Earth's biogeochemical cycle of carbon delivers both limestones and organic materials to the crust. In numerous, biologically catalysed redox reactions, hydrogen, sulphur, iron, and oxygen serveExpand
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Dynamics of the Neoproterozoic carbon cycle
The existence of unusually large fluctuations in the Neoproterozoic (1,000–543 million years ago) carbon-isotopic record implies strong perturbations to the Earth's carbon cycle. To analyze theseExpand
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Factors controlling 13C contents of sedimentary organic compounds: Principles and evidence
The carbon isotopic composition of any naturally synthesized organic compound depends on (1) the carbon source utilized, (2) isotope effects associated with assimilation of carbon by the producingExpand
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Fractionation of carbon isotopes by phytoplankton and estimates of ancient CO2 levels.
Reports of the 13C content of marine particulate organic carbon are compiled and on the basis of GEOSECS data and temperatures, concentrations, and isotopic compositions of dissolved CO2 in theExpand
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Molecular and isotopic analysis of anaerobic methane-oxidizing communities in marine sediments
Convergent lines of molecular, carbon-isotopic, and phylogenetic evidence have previously indicated (Hinrichs, K.-U., Hayes, J.M., Sylva, S.P., Brewer, P.G., DeLong, E. F., 1999. Methane-consumingExpand
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Consistent fractionation of 13C in nature and in the laboratory: growth-rate effects in some haptophyte algae.
The carbon isotopic fractionation accompanying formation of biomass by alkenone-producing algae in natural marine environments varies systematically with the concentration of dissolved phosphate.Expand
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