Figure 5: Microbial Fe pump in deep-sea hydrothermal plumes.
From: Microbial iron uptake as a mechanism for dispersing iron from deep-sea hydrothermal vents
Uptake of Fe (primarily Fe(III)) is conducted by dominant chemosynthetic, methanotrophic and heterotrophic populations. Subsequent dispersal of Fe may occur as Fe-siderophore complexes or via whole cells or POC or DOC produced through cell lysis.
