Table 3.
Fixed effects leaf trait variables retained within the multiple variable REML models for each of the root properties; also presented is the percentage variation in each root property explained by the site, the retained fixed effects, and the significance (P), Wald statistic and the direction and magnitude of the standardized effect for each of the retained fixed effects
| Response variable | Retained fixed effect | % variation explained by site | % variation explained by model (after site effect removed) | P | Effect | Wald |
|---|---|---|---|---|---|---|
| RLSM | LDMC | 56·5 | 34·0 | 0·025 | 2·63 | 5·88 |
| Leaf N Content | 0·043 | −0·02 | 4·71 | |||
| RMSM | Leaf C Content | 66·7 | 59·0 | <0·001 | 0·54 | 29·44 |
| Vegetative Height | 0·011 | −0·76 | 14·20 | |||
| Root Diameter | Vegetative Height | 89·1 | 40·7 | <0·001 | 0·01 | 14·91 |
| SRL | Leaf C Content | 87·0 | 35·2 | 0·0023 | −0·02 | 12·14 |
| RDMC | Leaf C Content | 30·5 | 39·9 | 0·003 | 0·00 | 14·03 |
| Leaf N Content | 0·045 | 0·00 | 4·54 | |||
| Root C Content | Leaf C Content | 10·6 | 50·6 | < 0·001 | 1·08 | 17·25 |
| Vegetative Height | 0·005 | −1·66 | 9·85 | |||
| Root N Content | Leaf C Content | 4·5 | 37·3 | 0·004 | −0·08 | 10·16 |
| Root C/N ratio | Leaf C Content | 2·7 | 49·3 | <0·001 | 0·48 | 17·60 |
RLSM and RMSM (root length and root mass per gram of dried soil), RDMC (root dry matter content), LDMC (leaf dry matter content), C content and N content were the content of carbon and nitrogen in leaves or roots.