Table 1.
Slope coefficients, p values and standard errors (SE) for linear regressions showing the relationships between elevation and abiotic factors, nematode abundance, biomass, ecological indices and metabolic footprint.
| Category | Variables | Slope | p value | SE |
|---|---|---|---|---|
| Abiotic factors | Soil moisture | 0.02847 | < 0.0001 | 0.0023 |
| Soil organic matter | 0.008233 | < 0.0001 | 0.0005 | |
| Clay proportion | 0.01970 | < 0.0001 | 0.0011 | |
| Soil pH | − 0.00174 | < 0.0001 | 0.0001 | |
| Abundance | Total nematodes | − 0.5068 | 0.0042 | 0.1676 |
| Bacterivores | − 0.1713 | 0.0530 | 0.0821 | |
| Fungivores | − 0.1707 | 0.0231 | 0.0724 | |
| Herbivores | − 0.1067 | 0.0099 | 0.0395 | |
| Omnivores | − 0.02952 | 0.0052 | 0.0100 | |
| Predators | − 0.02851 | 0.1003 | 0.0169 | |
| Biomass | Total nematodes | − 0.00042 | 0.0042 | 0.0001 |
| Bacterivores | − 8.93100 | 0.0530 | 4.8390 | |
| Fungivores | − 5.78500 | 0.0231 | 2.4500 | |
| Omnivores | − 0.06194 | 0.0099 | 0.0209 | |
| Predators | − 0.00011 | 0.0052 | 8.3780 | |
| Ecological indices | Shannon index (H) | − 0.00046 | 0.0004 | 0.0001 |
| Generic richness (Chao1) | − 0.00262 | 0.0216 | 0.0010 | |
| Evenness (J) | − 0.00012 | 0.0024 | 3.8860 | |
| Sum of Maturity index (SMI) | − 0.00016 | 0.1046 | 9.7500 | |
| Maturity index (MI) | − 0.00028 | 0.0033 | 9.1400 | |
| Plant parasitic index (PPI) | − 0.00038 | 0.0025 | 0.0001 | |
| Basal index (BI) | 0.0053 | 0.2941 | 0.0049 | |
| Enrichment index (EI) | − 0.00597 | 0.3811 | 0.0067 | |
| Structured index (SI) | − 0.02147 | 0.0014 | 0.0062 | |
| Metabolic footprint | Composite | − 0.1347 | 0.0013 | 0.0390 |
| Enrichment | − 0.02629 | 0.0196 | 0.0108 | |
| Structure | − 0.04426 | 0.0260 | 0.0192 |