Biogeochemical Controls on the Redox Evolution of Earth’s Oceans and Atmosphere | Zendy

Christopher T. Reinhard | Zendy; Noah J. Planavsky | Zendy

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Biogeochemical Controls on the Redox Evolution of Earth’s Oceans and Atmosphere

Author(s) -

Christopher T. Reinhard,

Noah J. Planavsky

Publication year - 2020

Publication title -

elements

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.345

H-Index - 85

eISSN - 1811-5217

pISSN - 1811-5209

DOI - 10.2138/gselements.16.3.191

Subject(s) - biosphere , biogeochemical cycle , atmosphere (unit) , redox , early earth , astrobiology , earth science , oxidizing agent , earth system science , biogeochemistry , earth (classical element) , geology , environmental science , oceanography , ecology , chemistry , environmental chemistry , meteorology , biology , physics , mathematical physics , organic chemistry

Earth’s Modern Oxygen Cycle On the modern Earth, molecular oxygen (O2) is produced through photosynthesis in sunlit surface environments in which cyanobacteria, algae, and plants use energy from the Sun to transfer electrons from water to biomass. Much of the biomass produced by the photosynthetic biosphere is consumed rapidly through aerobic respiration, which gains energy by transferring electrons from biomass back to O2. These coupled processes can be denoted as:

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