Fig. 4

Core-scale carbonaceous greenhouse gas measurements throughout rewetting and post-rewetting incubation. CO₂ (μmol g⁻¹ s⁻¹) respiration rates from a intact or b homogenized cores, and CH₄ (μmol g⁻¹ s⁻¹) respiration rates from c intact or d homogenized cores, during rewetting (200 min) and 20 h following rewetting event; wet from above (simulated precipitation) or wet from below (simulated groundwater rise) for cores maintained at field moisture content or subjected to laboratory-induced antecedent drought cores. Solid lines represent cores from simulated precipitation, whereas dashed lines represent cores from simulated groundwater rise treatments. Bars represent standard error for n = 4 cores, with the exception of homogenized cores subjected to antecedent drought and wet from below where n = 3. Statistical summaries for cumulative CO₂−C and CH₄−C are included as Table 2