H2S events in the Peruvian oxygen minimum zone facilitate enhanced dissolved Fe concentrations


"Dissolved iron (DFe) concentrations in oxygen minimum zones (OMZs) of Eastern Boundary Upwelling Systems are enhanced as a result of high supply rates from anoxic sediments. However, pronounced variations in DFe concentrations in anoxic coastal waters of the Peruvian OMZ indicate that there are factors in addition to dissolved oxygen concentrations (O2) that control Fe cycling. [...]"

Source: Scientific Reports
Authors: Christian Schlosser et al. 
DOI: 10.1038/s41598-018-30580-w

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Iron entangled

Iron is an essential fuel for life in the oceans. The influence of this element on biogeochemistry — and nitrogen cycling in particular — varies across environments and time.