Appendix F. Summary results of the four-way ANOVA for the effects of the different treatments on the proportion of the aboveground biomass contributed by each species.
TABLE F1. Summary results of the four-way ANOVA for the effects of the different treatments on the proportion of the aboveground biomass contributed by each species. P values below 0.05 are in bold. ηp2 = partial Eta-squared.
Source of variation† |
df |
Plantago lanceolata‡ |
Lolium perenne‡ |
Trifolium repens‡ |
Anthoxanthum odoratum |
Holcus lanatus |
||||||||||
F |
P |
ηp2 |
F |
P |
ηp2 |
F |
P |
ηp2 |
F |
P |
ηp2 |
F |
P |
ηp2 |
||
Nutrient heterogeneity (NH) |
1 |
35.77 |
<0.001 |
0.249 |
80.43 |
<0.001 |
0.427 |
30.27 |
<0.001 |
0.219 |
5.13 |
0.026 |
0.045 |
2.78 |
0.099 |
0.025 |
Nutrient availability (NA) |
2 |
5.84 |
0.004 |
0.098 |
0.43 |
0.654 |
0.008 |
5.54 |
0.005 |
0.093 |
1.01 |
0.366 |
0.018 |
1.38 |
0.255 |
0.025 |
Water heterogeneity (WH) |
1 |
6.51 |
0.012 |
0.057 |
0.21 |
0.646 |
0.002 |
10.36 |
0.002 |
0.088 |
0.69 |
0.408 |
0.006 |
0.43 |
0.513 |
0.004 |
Water availability (WA) |
2 |
5.09 |
0.008 |
0.086 |
7.88 |
0.001 |
0.127 |
1.77 |
0.176 |
0.032 |
0.56 |
0.575 |
0.010 |
4.52 |
0.013 |
0.077 |
NH × NA |
2 |
1.97 |
0.145 |
0.035 |
4.75 |
0.011 |
0.081 |
0.03 |
0.972 |
0.001 |
0.35 |
0.706 |
0.006 |
1.64 |
0.199 |
0.029 |
NH × WH |
1 |
0.01 |
0.970 |
<0.001 |
0.13 |
0.728 |
0.001 |
0.41 |
0.522 |
0.004 |
4.26 |
0.041 |
0.038 |
3.13 |
0.080 |
0.028 |
NA × WH |
2 |
0.10 |
0.902 |
0.002 |
0.25 |
0.782 |
0.005 |
0.05 |
0.949 |
0.001 |
0.60 |
0.555 |
0.011 |
0.96 |
0.385 |
0.018 |
NH × WA |
2 |
1.08 |
0.344 |
0.020 |
0.06 |
0.947 |
0.001 |
0.02 |
0.977 |
<0.001 |
1.57 |
0.214 |
0.028 |
1.77 |
0.175 |
0.032 |
NA × WA |
4 |
0.40 |
0.806 |
0.015 |
0.53 |
0.713 |
0.019 |
0.12 |
0.977 |
0.004 |
0.06 |
0.995 |
0.002 |
0.31 |
0.871 |
0.011 |
WH × WA |
2 |
2.44 |
0.092 |
0.043 |
1.98 |
0.145 |
0.035 |
1.77 |
0.175 |
0.032 |
0.51 |
0.604 |
0.009 |
1.17 |
0.314 |
0.021 |
NH × NA × WH |
2 |
1.93 |
0.149 |
0.035 |
0.29 |
0.751 |
0.005 |
1.58 |
0.211 |
0.028 |
0.63 |
0.536 |
0.011 |
0.95 |
0.392 |
0.017 |
NH × NA × WA |
4 |
1.10 |
0.358 |
0.039 |
0.28 |
0.892 |
0.010 |
1.26 |
0.294 |
0.044 |
0.49 |
0.740 |
0.018 |
0.71 |
0.584 |
0.026 |
NH × WH × WA |
2 |
1.56 |
0.215 |
0.028 |
1.27 |
0.286 |
0.022 |
2.26 |
0.109 |
0.040 |
1.69 |
0.190 |
0.030 |
1.78 |
0.174 |
0.032 |
NA × WH × WA |
4 |
1.21 |
0.312 |
0.043 |
0.15 |
0.962 |
0.006 |
0.83 |
0.509 |
0.030 |
0.63 |
0.644 |
0.026 |
0.22 |
0.925 |
0.008 |
NH × NA × WH × WA |
4 |
1.80 |
0.133 |
0.063 |
0.24 |
0.918 |
0.009 |
0.75 |
0.563 |
0.027 |
0.17 |
0.951 |
0.006 |
0.20 |
0.938 |
0.007 |
†All main effects and interactions were tested against the Error term (108 df).
‡ANOVA results are shown for arcsine-transformed data.