Table 4.
Results of full-factorial, mixed-model ANOVAs including species as a random effect, treatment as a fixed effect, and measures of gas exchange physiology, chlorophyll fluorescence, and growth as dependent variables. Rdark, Icomp, NPQ, leaf, root, and stem biomass were ln-transformed to achieve normality. Degrees of freedom (df), F-statistics, and p-values are given. Asterisks denote significance (* p≤0.05, ** p≤0.01, *** p≤0.001).
| Response | Effect | df | F | p | |
|---|---|---|---|---|---|
| Icomp | Treatment | 3 | 13.07 | <0.001 | *** |
| (μmol photons m−2 s−1) | Species × Treatment | 9 | 1.01 | 0.447 | |
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| Imax | Treatment | 3 | 3.15 | 0.034 | * |
| (μmol photons m−2 s−1) | Species × Treatment | 9 | 2.10 | 0.048 | * |
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| Rdark | Treatment | 3 | 11.53 | <0.001 | *** |
| (μmol CO2 m−2 s−1) | Species × Treatment | 9 | 2.22 | 0.037 | * |
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| ΦPSII | Treatment | 3 | 10.14 | <0.001 | *** |
| (μmol CO2 μmol−1 photons) | Species × Treatment | 9 | 2.51 | 0.019 | * |
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| Amax | Treatment | 3 | 3.17 | 0.033 | * |
| (μmol CO2 m−2 s−1) | Species × Treatment | 9 | 2.35 | 0.028 | * |
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| Asat | Treatment | 3 | 5.43 | 0.003 | ** |
| (μmol CO2 m−2 s−1) | Species × Treatment | 9 | 1.89 | 0.076 | |
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| NPQ | Treatment | 3 | 0.42 | 0.742 | |
| Species × Treatment | 9 | 2.32 | 0.029 | * | |
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| Fv:Fm | Treatment | 3 | 9.26 | <0.001 | *** |
| Species × Treatment | 9 | 2.20 | 0.039 | * | |
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| Total biomass | Treatment | 3 | 10.93 | <0.001 | *** |
| (g) | Species × Treatment | 9 | 2.83 | 0.009 | ** |
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| Leaf biomass | Treatment | 3 | 28.32 | <0.001 | *** |
| (g) | Species × Treatment | 9 | 9.70 | <0.001 | *** |
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| Stem biomass | Treatment | 3 | 3.27 | 0.038 | * |
| (g) | Species × Treatment | 3 | 3.38 | 0.034 | * |
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| Root biomass | Treatment | 3 | 11.92 | <0.001 | *** |
| (g) | Species × Treatment | 9 | 1.85 | 0.082 | |