Fig. 4
From: Anoxygenic photosynthesis and the delayed oxygenation of Earth’s atmosphere
Representative results from our 1-D competitive photosynthesis model. a Water column \({\mathrm{PO}}_4^{3 - }\) and Fe2+ concentrations; and b rates of oxygenic and anoxygenic (photoferrotrophic) photosynthesis for our baseline simulation. c Relative contribution of oxygenic photosynthesis to total water column photosynthesis (foxy) as a function of deep water dissolved Fe/P ratio. The open circle denotes our baseline simulation. Note the log scale in c
