Fate of organic carbon reaching the deep sea floor: a status report

Details Fate of organic carbon reaching the deep sea floor: a status report Fate of organic carbon reaching the deep sea floor: a status report

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984gecoa..48..977b&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 48, Issue 5, pp.977-986

Physics

24

Scientific paper

The rates of organic carbon oxidation by O 2 , NO 3 - , MnO 2 , Fe 2 O 3 and SO 4 - have been calculated for five pelagic Pacific and Atlantic sites using simple diffusion-reaction models. O 2 everywhere oxidizes > 90% of the raining C org ; the fraction oxidized by the secondary oxidants decreases as the rain rate of organic C to the seafloor decreases. A large fraction of the C org escaping oxidation by O 2 is oxidized by the secondary oxidants. Hence while these oxidants play a small role in remineralization, they are important in regulating the burial of organic matter and the consequent removal from the oceans of reduced carbon and nutrients.

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