Format

Send to

Choose Destination
Science. 2010 Dec 3;330(6009):1375-8. doi: 10.1126/science.1196889. Epub 2010 Nov 11.

A cryptic sulfur cycle in oxygen-minimum-zone waters off the Chilean coast.

Author information

1
Institute of Biology and Nordic Center for Earth Evolution, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark. dec@biology.sdu.dk

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.

Comment in

PMID:
21071631
DOI:
10.1126/science.1196889
[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for HighWire
Loading ...
Support Center