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one publication added to basket [201519]
A cryptic sulfur cycle in oxygen-minimum–zone waters off the Chilean coast
Canfield, D.E.; Stewart, F.J.; Thamdrup, B.; De Brabandere, L.; Dalsgaard, T.; DeLong, E.F.; Revsbech, N.P.; Ulloa, O. (2010). A cryptic sulfur cycle in oxygen-minimum–zone waters off the Chilean coast. Science (Wash.) 330(6009): 1375-1378
In: Science (Washington). American Association for the Advancement of Science: Washington DC. ISSN 0036-8075, more
Peer reviewed article

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Keyword
    Marine

Authors  Top 
  • Canfield, D.E.
  • Stewart, F.J.
  • Thamdrup, B.
  • De Brabandere, L., more
  • Dalsgaard, T.
  • DeLong, E.F.
  • Revsbech, N.P.
  • Ulloa, O.

Abstract
    Nitrogen cycling is normally thought to dominate the biogeochemistry and microbial ecology of oxygen-minimum zones in marine environments. Through a combination of molecular techniques and process rate measurements, we showed that both sulfate reduction and sulfide oxidation contribute to energy flux and elemental cycling in oxygen-free waters off the coast of northern Chile. These processes may have been overlooked because in nature, the sulfide produced by sulfate reduction immediately oxidizes back to sulfate. This cryptic sulfur cycle is linked to anammox and other nitrogen cycling processes, suggesting that it may influence biogeochemical cycling in the global ocean.

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