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Fig. 1. The reduction of methane oxidation due to soil disturbance and ammonium nitrate fertilizer (100 kg N ha–1) in mature forests, mid-successional communities, and no-till corn (Zea mays L.) fields at the W.K. Kellogg Biological Station Long-term Ecological Research (KBS LTER) site. Vertical bars are standard errors of mean (s.e., n = 3 sites x 7 sample dates). Different higher and lowercase letters represent significant differences (P < 0.05) of treatments among sites and within site, respectively.
