Table 2. The significance of environmental variables measured in structuring the community of 11 species of amphibians found at 50 lowland sites in the Overberg, South Africa.
Outputs are from a partial Redundancy Analysis (partial RDA) controlling for spatial position of the sites and their day of sampling. Asterisks (* and **) denote levels of statistical significance.
| Environmental variable | df | Variance | F | P |
|---|---|---|---|---|
| Fish/No fish | 1 | 0.0860 | 2.4115 | 0.009** |
| Temporary/Permanent | 1 | 0.0570 | 1.5985 | 0.096 |
| Area | 1 | 0.0500 | 1.4029 | 0.179 |
| Perimeter | 1 | 0.0576 | 1.6141 | 0.107 |
| pH | 1 | 0.0156 | 0.4364 | 0.927 |
| Conductivity | 1 | 0.0504 | 1.4144 | 0.171 |
| Wetland type | 4 | 0.2208 | 1.5476 | 0.033* |
| Residual | 35 | 1.2483 |