Figure 4.
Distribution of the detected DOM molecular formulas over the course of the experiment (day 0 until day 55) of the mitomycin C treated slurry of the 20 cmbsf incubation according to the H/C and O/C ratios (van Krevelen diagram). Each dot represents at least one molecular formula, color-coded according to the N- and P-content and locations of typical molecular compound classes [57] are indicated (see legend). (A) Background DOM compounds, identified at day 0, (B) freshly released DOM compounds after virus-mediated cell lysis on day 6 (vDOM) and (C) remaining vDOM compounds at the end of the experiment are displayed. In B and C, background DOM compounds that were not associated with the virus-induced cell lysis are presented in grey.
