Table 3
Summary of statistical tests (p < 0.05) comparing results for day-time and night-time surveys. Wilcoxon or Student tests were used to test for differences in means. Pearson or Spearman tests for testing correlations and standardised mean axis (SMA) tests for testing linear relationships (null hypothesis: intercept 0 and slope 1).
| Variable | Upper layer | Lower layer | |
|---|---|---|---|
| Mean values | No difference | No difference | |
| sA (m2 ha‑1) | Correlation | Yes | Yes |
| SMA | Yes | No | |
| Mean values | Difference | No difference | |
| TS (dB) | Correlation | No | Yes |
| SMA | No | No | |
| Mean values | Difference | No difference | |
| Biomass (kg ha‑1) | Correlation | Yes | Yes |
| SMA | Yes | No |
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