Rethinking sediment biogeochemistry after the discovery of electric currents.

  title={Rethinking sediment biogeochemistry after the discovery of electric currents.},
  author={Lars Peter Nielsen and Nils Risgaard-Petersen},
  journal={Annual review of marine science},
The discovery of electric currents in marine sediments arose from a simple observation that conventional biogeochemistry could not explain: Sulfide oxidation in one place is closely coupled to oxygen reduction in another place, centimeters away. After experiments demonstrated that this resulted from electric coupling, the conductors were found to be long, multicellular, filamentous bacteria, now known as cable bacteria. The spatial separation of oxidation and reduction processes by these… CONTINUE READING
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