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. 2022 May 17;13:859063. doi: 10.3389/fmicb.2022.859063

FIGURE 4.

FIGURE 4

OM without N: normalized microbial growth rate (Gnorm) under oxic conditions as a function of NInorg-availability (Inorm), degrees of reduction of the OM (γOM; lines with different colors), and source of NInorg (solid lines for NH4+ vs. dashed lines for NO3-). Horizontal lines, blue to green, represent the transition from energy to C-limited conditions.