Fig. 4: Temporal evolution of key parameters related to microbial P-utilization in deep time.
From: Bioavailable phosphite in the surface ocean during the Great Oxidation Event
GOE and BIF stand for Great Oxygenation Event and banded iron formation, respectively. A, B show the temporal evolution of O2 in the atmosphere and primary productivity in the ocean, respectively82,83. Primary productivity increased around the GOE. C shows the amount of precipitated BIF, reaching a maximum between 2.65 and 2.40 Ga39. D shows the timing of microbial P utilization along with known estimates of P(V) in the Archean and Paleoproterozoic6.
