Fig. 2: Response of NO2− oxidation rates to O2 additions at stations PS2 and PS3. | The ISME Journal

Fig. 2: Response of NO2− oxidation rates to O2 additions at stations PS2 and PS3.

From: Microbial niche differentiation explains nitrite oxidation in marine oxygen minimum zones

Fig. 2

Samples were from oxycline (a, b), ODZ top (c, d), and ODZ core (e, f), respectively. Original O2 in all samples was purged with helium, and O2 concentrations shown on the X-axis were measured O2 concentrations in sample bottles after O2 additions. Dashed line means that Km (half-saturation constant; see “Methods”) was not significantly different from zero. The adjusted R square (r2) for the fitting curve is shown. Error bars around each point show standard errors of the linear regression slope calculated from time course incubations with five bottles. Sampling depths for station PS2: Oxycline (93 m), ODZ top (120 m), and ODZ core (250 m); for station PS3: Oxycline (50 m), ODZ top (60 m), and ODZ core (160 m).

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