Fig 6.

(A) Degradation of organic carbon pools (labile and recalcitrant fractions) indicated by normalized signal intensities of detected key genes involved in carbon degradation as determined by GeoChip 4.0 from tested samples in the microcosm experiment under warmed and control conditions (control, ambient temperature; warmed, ambient temperature + 5°C). The signal intensity for each gene was the average of the total signal intensity from YT, XZ, and XX wetland samples. The complexity of organic C fractions is presented in order from labile to recalcitrant C. Error bars are +1 standard deviation. Asterisks represent significant Student's t test differences between warmed and control samples (*, P < 0.05; **, P < 0.01). (B) Percent change in abundance of detected genes between warmed and control samples, indicated by the normalized signal intensities for decomposition of different organic carbon pools (starch, hemicellulose, cellulose, chitin, and lignin) subjected to experimental warming.