Appendix B (Table B1). Summary results of the four-way MANOVA and ANOVA analyses for assemblage measurements. P values below 0.05 are in bold. BAR = below: aboveground biomass ratio and RII = ratio of root biomass in the 0–15 soil depth layer to that in the 16–30 depth layer. ηp2 = partial Eta-squared.
MANOVA results |
ANOVA results |
||||||||||||
Source of variation |
Biomass (total, below- and aboveground) |
BAR† |
RII |
||||||||||
Pillai trace |
F |
df |
P |
ηp2 |
F |
df |
P |
ηp2 |
F |
df |
P |
ηp2 |
|
Nutrient heterogeneity (NH) |
0.730 |
95.47 |
3, 106 |
<0.001 |
0.730 |
13.94 |
1, 107 |
<0.001 |
0.115 |
293.25 |
1, 108 |
<0.001 |
0.731 |
Nutrient availability (NA) |
0.842 |
25.92 |
6, 214 |
<0.001 |
0.421 |
6.07 |
2, 107 |
0.003 |
0.102 |
10.20 |
2, 108 |
<0.001 |
0.159 |
Water heterogeneity (WH) |
0.065 |
2.47 |
3, 106 |
0.066 |
0.065 |
5.01 |
1, 107 |
0.027 |
0.045 |
0.10 |
1, 108 |
0.751 |
0.001 |
Water availability (WA) |
0.954 |
32.56 |
6, 214 |
<0.001 |
0.477 |
5.34 |
2, 107 |
0.006 |
0.091 |
14.66 |
2, 108 |
<0.001 |
0.214 |
NH × NA |
0.034 |
0.61 |
6, 214 |
0.722 |
0.017 |
0.22 |
2, 107 |
0.806 |
0.004 |
2.56 |
2, 108 |
0.082 |
0.045 |
NH × WH |
0.004 |
0.14 |
3, 106 |
0.936 |
0.004 |
0.27 |
1, 107 |
0.604 |
0.003 |
0.27 |
1, 108 |
0.604 |
0.002 |
NA × WH |
0.094 |
1.76 |
6, 214 |
0.109 |
0.047 |
4.09 |
2, 107 |
0.019 |
0.071 |
2.19 |
2, 108 |
0.116 |
0.039 |
NH × WA |
0.177 |
3.47 |
6, 214 |
0.003 |
0.089 |
2.88 |
2, 107 |
0.061 |
0.051 |
0.44 |
2, 108 |
0.648 |
0.008 |
NA × WA |
0.478 |
5.12 |
12, 324 |
<0.001 |
0.159 |
0.83 |
4, 107 |
0.509 |
0.030 |
1.14 |
4, 108 |
0.343 |
0.040 |
WH × WA |
0.518 |
12.48 |
6, 214 |
<0.001 |
0.259 |
8.28 |
2, 107 |
<0.001 |
0.134 |
4.04 |
2, 108 |
0.020 |
0.070 |
NH × NA × WH |
0.021 |
0.38 |
6, 214 |
0.892 |
0.010 |
0.25 |
2, 107 |
0.776 |
0.005 |
0.64 |
2, 108 |
0.530 |
0.012 |
NH × NA × WA |
0.151 |
1.43 |
12, 324 |
0.150 |
0.050 |
2.54 |
4, 107 |
0.044 |
0.087 |
0.37 |
4, 108 |
0.832 |
0.013 |
NH × WH × WA |
0.105 |
1.98 |
6, 214 |
0.070 |
0.053 |
0.04 |
2, 107 |
0.996 |
<0.001 |
0.83 |
2, 108 |
0.438 |
0.015 |
NA × WH × WA |
0.114 |
1.07 |
12, 324 |
0.390 |
0.038 |
0.96 |
4, 107 |
0.434 |
0.035 |
0.52 |
4, 108 |
0.995 |
0.002 |
NH × NA × WH × WA |
0.108 |
1.00 |
12, 324 |
0.445 |
0.036 |
0.67 |
4, 107 |
0.617 |
0.024 |
2.11 |
4, 108 |
0.084 |
0.073 |
† Log10-transformed total assemblage biomass was used as a covariate in this analysis.