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Online Resource

Online Resource Table 1 ANOVA results for biomass of three study species grown in soil collected from barren and vegetated serpentine soils and treated factorially with N, K, and Ca. Because preliminary results showed no effect of K treatments on biomass, we present an NCa full factorial analysis. Significant model effects (P < 0.05) in bold text

Analysis of Variance
Source / DF / Sum of Squares / Mean Square / F Ratio
Model / 59 / 112.84 / 1.91 / 23.32
Error / 66 / 5.41 / 0.082 / Prob > F
C. Total / 125 / 118.26 / <.0001
Tests wrt Random Effects
Source / SS / MS Num / DF Num / F Ratio / Prob > F
Species / 39.68 / 19.84 / 2 / 87.61 / 0.0005
Soil type / 22.31 / 22.31 / 1 / 34.99 / 0.0261
Species*Soil type / 3.30 / 1.65 / 2 / 23.86 / 0.0008
Collection Location&Random / 1.10 / 0.55 / 2 / 0.65 / 0.5901
Species*Collection Location&Random / 0.91 / 0.23 / 4 / 6.89 / 0.5581
Soil type*Collection Location&Random / 1.37 / 0.69 / 2 / . / .
Species*Soil type*Collection Location&Random / 0.26 / 0.07 / 4 / 0.80 / 0.5277
N / 0.26 / 0.26 / 1 / 1.37 / 0.3707
Species*N / 0.78 / 0.39 / 2 / 8.99 / 0.0362
Soil type*N / 0.03 / 0.03 / 1 / 0.60 / 0.4958
Species*Soil type*N / 0.57 / 0.28 / 2 / 3.46 / 0.0373
Collection Location*N&Random / 0.36 / 0.18 / 2 / 0.81 / 0.6140
Species*Collection Location*N&Random / 0.17 / 0.04 / 4 / 0.72 / 0.6197
Soil type*Collection Location*N&Random / 0.09 / 0.05 / 2 / 0.45 / 0.6912
Ca / 0.04 / 0.04 / 1 / 0.31 / 0.6392
Species*Ca / 0.27 / 0.13 / 2 / 2.06 / 0.2387
Soil type*Ca / 0.75 / 0.75 / 1 / 34.72 / 0.0035
Species*Soil type*Ca / 0.35 / 0.18 / 2 / 2.16 / 0.1232
Collection Location*Ca&Random / 0.24 / 0.12 / 2 / 0.60 / 0.6772
Species*Collection Location*Ca&Random / 0.26 / 0.06 / 4 / 1.05 / 0.4757
Soil type*Collection Location*Ca&Random / 0.03 / 0.02 / 2 / 0.16 / 0.8619
N*Ca / 0.07 / 0.07 / 1 / 0.22 / 0.6869
Species*N*Ca / 0.13 / 0.07 / 2 / 1.09 / 0.4228
Soil type*N*Ca / 0.05 / 0.05 / 1 / 0.50 / 0.5431
Species*Soil type*N*Ca / 0.72 / 0.36 / 2 / 4.41 / 0.0160
Collection Location*N*Ca&Random / 0.57 / 0.29 / 2 / 3.49 / 0.2926
Species*Collection Location*N*Ca&Random / 0.24 / 0.06 / 4 / 0.74 / 0.5699
Soil type*Collection Location*N*Ca&Random / 0.21 / 0.10 / 2 / 1.27 / 0.2890