Table 2.
Diagnostic tests for the comparison of environmental variables (30 km buffers), with NMDS axis scores used to summarize the present-day British distribution (spatial density of occurrence) for extirpated species (d.f. = 61). (Using a Bonferonni correction for multiple tests, results are significant when p < 0.01 (indicated in bold).)
| explanatory variables | NMDS axis 1 |
NMDS axis 2 |
||
|---|---|---|---|---|
| r2 | p | r2 | p | |
| mean temperature | 0.0075 | 0.4671 | 0.0585 | 0.0314 |
| mean precipitation | 0.0821 | 0.0130 | 0.0018 | 0.2952 |
| SO2 | 0.244 | 0.000023 | 0.0147 | 0.7486 |
| NHx | 0.006 | 0.4304 | 0.01752 | 0.1519 |
| ancient woodland | 0.0904 | 0.0125 | 0.1487 | 0.00164 |