Appendix C. Analysis of covariance of log10-transformed angiosperm species richness with region as main effect and log10 (area), maximum elevation, and climate variables as covariates, using 63 floras of < 104 km2 with the means of elevations and temperatures being comparable between EAS and ENA (Model: R2 = 0.631).
Source |
Sum of squares |
df |
F ratio |
P |
Region |
0.088 |
1 |
13.506 |
0.0005 |
Log 10 area |
0.227 |
1 |
34.955 |
<0.0001 |
Elevation |
0.012 |
1 |
1.810 |
0.1839 |
MAT |
0.052 |
1 |
7.956 |
0.0066 |
AET |
0.021 |
1 |
3.298 |
0.0747 |
SRAIN |
0.047 |
1 |
7.266 |
0.0093 |
Error |
0.364 |
56 |
Note: MAT = mean annual temperature, SRAIN = summer precipitation, and AET = actual evapotranspiration.