Table 2. Results of the generalized linear models (GLMs) about the effect of soil penetration resistance on thedependent variables.
| Dependent variable | Estimate | Standard error | p |
|---|---|---|---|
| No. of seedlings | −0.0056 | 0.0016 | <0.001 |
| Species richness | −0.0036 | 0.0009 | <0.001 |
| Forbs, no. of seedlings | −0.0057 | 0.0015 | <0.001 |
| Forbs, species richness | −0.0033 | 0.0010 | <0.001 |
| Graminoids, no. of seedlings | −0.0055 | 0.0024 | 0.023 |
| Graminoids, species richness | −0.0044 | 0.0015 | 0.003 |
| Perennials, no. of seedlings | −0.0061 | 0.0022 | 0.007 |
| Perennials, species richness | −0.0051 | 0.0014 | <0.001 |
| Short-lived spp., no. of seedlings | −0.0053 | 0.0014 | <0.001 |
| Short-lived spp., species richness | −0.0030 | 0.0010 | 0.002 |
| Grassland spp., no. of seedlings | −0.0057 | 0.0017 | <0.001 |
| Grassland spp., species richness | −0.0035 | 0.0010 | <0.001 |
| Weeds, no. of seedlings | −0.0053 | 0.0018 | 0.004 |
| Weeds, species richness | --0.0054 | 0.0017 | 0.002 |
| CWM, seed mass | −0.0003 | 0.0008 | 0.754 |
| CWM, WB | −0.0002 | 0.0002 | 0.452 |
| CWM, SB | −0.0004 | 0.0003 | 0.196 |
| CWM, seed shape index | −0.0001 | 0.0001 | 0.037 |
Note:
Results of the generalized linear models (GLMs) about the effect of soil penetration resistance on the seedling number and species richness of the morphological, ecological and life-form groups, as well as on the CWMs of the studied traits. Significant effects are marked with boldface.