Fig. 2: Distribution of N conversion rates and N2O production rates from multiple substrates.
From: Particle-associated denitrification is the primary source of N2O in oxic coastal waters
(a) ammonia (NH3) oxidation; (b) nitrite (NO2-) oxidation; (c) nitrate (NO3-) reduction to nitrite; (d) N2O production from ammonia oxidation; (e) N2O production from nitrite reduction; (f) N2O production from nitrate reduction; (g) total N2O production rate; (h) fractional contribution of N2O production from ammonia oxidation; (i) fractional contribution of N2O production from nitrite plus nitrate (NOX-) reduction. The blue, red and gray dots denote samples from the Pearl River Estuary (PRE), Jiulong Estuary (JLE) and Changjiang Estuary (CJE), respectively. Data are presented as mean rates ± standard deviation. Errors bars in panels (a–g) are standard deviation from triplicate incubations; errors bars in panels (h, i) are propagated standard deviations on the rates derived from triplicate incubations (n = 3 biologically independent samples). The purple dashed lines in panel (h) and (i) denote the value of 50%.
