Table 1.
Effect of species (D. glomerata, H. lanatus), CO2 concentration (390, 520 ppm), climatic condition (Clim) (Con, ECE), date (D1, D2) and their interactions, based on ANOVA, on above-ground biomass (BIOM), resilience index (RESIL), mean leaf elongation rate during ECE (LERECE), maximum leaf elongation rate during the recovery period (LERr), leaf pre-dawn water potential (POT), leaf relative water content (RWC), and leaf nitrogen content (LNC)
| Period | Variable | Species | CO2 | Clim | Species× CO2 | Species× Clim | CO2× Clim | Species× CO2×Clim | Date | Date× Species | Date× CO2 | Date× Clim |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Before ECE | BIOM | 0.007 | NS | NS | ||||||||
| During ECE | LERECE | <0.0001 | <0.0001 | <0.0001 | <0.0001 | <0.0001 | 0.0037 | NS | ||||
| POT | <0.0001 | NS | <0.0001 | NS | <0.0001 | 0.0188 | NS | <0.0001 | NS | NS | <0.0001 | |
| RWC | 0.03 | NS | <0.0001 | NS | NS | 0.019 | NS | <0.0001 | NS | 0.006 | <0.0001 | |
| LNC | <0.0001 | <0.0001 | NS | 0.032 | NS | NS | NS | NS | NS | NS | NS | |
| Recovery after ECE | LERr | <0.0001 | <0.0001 | <0.0001 | <0.0002 | <0.0001 | 0.0042 | <0.0001 | ||||
| LNC | 0.0101 | 0.0100 | <0.0001 | NS | NS | NS | NS | |||||
| BIOM | NS | 0.077 | NS | NS | 0.010 | NS | NS | |||||
| RESIL | 0.0047 | NS | NS | NS | NS | NS | NS |
P values are shown when <0.05. NS, Not significant. Three periods are considered: before ECE, during ECE, and during recovery after ECE (see Fig. 1)