Open Access

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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