FIG. 6.

Production of N₂O (A) and CH₄ (B) during aerobic incubations of Searsville Lake soil with 40 μmol of added NH₄Cl g⁻¹. Symbols: ▵, no additions; ○, 0.01 kPa of DFM added; ▿, 0.03 kPa of DFM added; ◊, 0.05 kPa of DFM added; □, 1.0 kPa of DFM added; +, 2.0 kPa of C₂H₂ added. No CH₄ measurements were made for the case of no additions. Error bars indicate ±1 standard deviation of the mean of three soil samples. The absence of error bars indicates that the error was smaller than the symbol size.