Table 3.
Statistical relationships between environmental variables and PDrand, randomized phylogenetic diversity, with higher (high PDrand) or lower (low PDrand) than expected PD for statistically significant cells only.
| Randomized PD high | Randomized PD low | df | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GLM | GLM | ||||||||||||
| ΔAIC | DE% | p | slope | I 300K | I 150K | ΔAIC | DE% | p | slope | I 300K | I 150K | ||
| Ann mean radiation + Temp seasonality | 0 | 29.70 | *** | − | −0.08 | −0.11 | 74 | 12.46 | ns | − | −0.04 | −0.04 | 3 |
| Ann mean radiation × Temp seasonality | 2 | 29.71 | ns | − | −0.10 | −0.11 | 42 | 17.41 | *** | − | −0.04 | −0.03 | 4 |
| Temp seasonality + Precip of coldest quarter | 3 | 28.99 | ns | − | −0.06 | −0.10 | 106 | 7.86 | *** | + | −0.03 | −0.03 | 3 |
| Temp seasonality | 4 | 28.12 | *** | − | −0.05 | −0.08 | 144 | 2.09 | *** | − | −0.01 | −0.01 | 2 |
| Temp seasonality × Precip of coldest quarter | 4 | 29.11 | ns | + | −0.10 | −0.10 | 82 | 11.62 | *** | + | −0.04 | −0.02 | 4 |
| Temp seasonality + Topographic flatness | 5 | 28.38 | ns | − | −0.07 | −0.10 | 67 | 13.45 | *** | − | −0.01 | −0.01 | 3 |
| Temp seasonality × Topographic flatness | 5 | 28.81 | ns | + | −0.07 | −0.11 | 64 | 14.18 | * | − | −0.02 | −0.01 | 4 |
| Ann precip + Temp seasonality | 6 | 28.17 | *** | − | −0.09 | −0.09 | 99 | 8.87 | ** | + | 0.00 | −0.01 | 3 |
| Ann precip × Temp seasonality | 7 | 28.46 | ns | − | −0.10 | −0.12 | 0 | 23.51 | *** | + | 0.00 | 0.00 | 4 |
| Ann precip × Precip of coldest quarter | 14 | 26.52 | * | − | −0.11 | −0.11 | 66 | 13.98 | *** | − | −0.04 | −0.05 | 4 |
| Ann precip × Ann mean radiation | 17 | 25.89 | *** | + | −0.11 | −0.12 | 43 | 17.27 | *** | + | −0.05 | −0.05 | 4 |
| Ann precip + Precip of coldest quarter | 22 | 24.17 | *** | − | −0.09 | −0.12 | 92 | 9.91 | *** | + | −0.04 | −0.05 | 3 |
| Ann precip + Ann mean radiation | 30 | 22.00 | *** | + | −0.09 | −0.12 | 63 | 14.02 | *** | − | −0.05 | −0.05 | 3 |
| Ann mean temp | 48 | 16.86 | *** | + | −0.05 | −0.06 | 88 | 10.20 | *** | − | −0.06 | −0.05 | 2 |
| Precip seasonality | 53 | 15.44 | *** | + | −0.04 | −0.06 | 144 | 1.97 | *** | − | −0.04 | −0.04 | 2 |
| Radiation seasonality | 57 | 14.57 | *** | − | −0.05 | −0.06 | 143 | 2.20 | *** | + | −0.04 | −0.04 | 2 |
| Ann precip × Topographic flatness | 59 | 15.01 | ns | + | −0.09 | −0.11 | 52 | 15.95 | ns | + | −0.01 | 0.00 | 4 |
| Ann precip | 59 | 13.88 | *** | + | −0.07 | −0.10 | 104 | 7.87 | *** | + | 0.00 | 0.00 | 2 |
| Ann precip + Topographic flatness | 60 | 14.32 | ns | + | −0.09 | −0.12 | 51 | 15.83 | *** | − | 0.00 | −0.01 | 3 |
| Ann mean radiation × Precip of coldest quarter | 89 | 7.32 | ns | − | −0.10 | −0.10 | 58 | 15.12 | *** | + | −0.05 | −0.04 | 4 |
| Ann mean radiation + Precip of coldest quarter | 89 | 6.77 | *** | − | −0.09 | −0.10 | 73 | 12.65 | ns | − | −0.04 | −0.04 | 3 |
| Precip of coldest quarter | 96 | 4.37 | ** | − | −0.06 | −0.06 | 110 | 7.05 | *** | + | −0.03 | −0.03 | 2 |
| Precip of coldest quarter + Topographic flatness | 98 | 4.48 | ns | − | −0.07 | −0.09 | 53 | 15.60 | *** | − | −0.03 | −0.03 | 3 |
| Precip of coldest quarter × Topographic flatness | 99 | 4.75 | ns | − | −0.09 | −0.11 | 55 | 15.60 | ns | + | −0.03 | −0.03 | 4 |
| Sand | 110 | 0.98 | ns | + | −0.02 | −0.03 | 156 | 0.37 | ns | − | −0.03 | −0.02 | 2 |
| Ann mean radiation | 110 | 0.88 | ns | + | −0.08 | −0.08 | 73 | 12.28 | *** | − | −0.04 | −0.04 | 2 |
| Clay | 110 | 0.80 | ns | − | −0.04 | −0.05 | 158 | 0.07 | ns | + | −0.03 | −0.02 | 2 |
| Ann mean radiation + Topographic flatness | 112 | 0.92 | ns | − | −0.09 | −0.10 | 34 | 18.31 | *** | − | −0.04 | −0.04 | 3 |
| Ann mean radiation × Topographic flatness | 113 | 1.14 | ns | − | −0.08 | −0.10 | 34 | 18.55 | ns | − | −0.05 | −0.05 | 4 |
| Rock grain size | 113 | 0.09 | ns | + | −0.02 | −0.08 | 156 | 0.31 | ns | − | 0.00 | 0.01 | 2 |
| Topographic flatness | 113 | 0.00 | ns | + | −0.07 | −0.09 | 77 | 11.82 | *** | − | 0.00 | 0.00 | 2 |
See Table 2 for abbreviations and full explanation.