Significant effect of climate change treatments (P-values) on PLFA 13C enrichment from soils from the CLIMAITE experiment sampled in August 2007.

Soil was sampled one day after addition of 13C2-glycine to field plots subjected to in situ treatment through one year with the climate change factors: elevated atmospheric CO2 concentration (CO2) summer drought (D) and warming (T), and those treatments in all combinations. Linear mixed models (proc mixed and GLM in SAS) with main effects: CO2, temperature (T) and drought (D) and interactions between the factors CO2, T and D.