Table 2.
Estimated oxygen diffusion rates and relative values at different root sections grouped according to the geographical area.
| Diffusion rate (nmol O2/L·μm) | Relative diffusiona | ||
|---|---|---|---|
| Empuriabrava FWS-CW | |||
| Root Tip (< 15 mm, n = 6) | 12.5 ± 14.3 | 1 | a |
| Middle Sect. (15 to 45 mm, n = 6) | 51.5 ± 57.3 | 27.16 ± 49.17 | b |
| Basal section (> 45 mm, n = 5) | 8.4 ± 6.6 | 14.47 ± 22.93 | ab |
| Baix Ter | |||
| Root Tip (< 15 mm, n = 6) | 10.4 ± 6.4 | 0.95 ± 0.12 | AB |
| Middle Sect. (15 to 45 mm, n = 8) | 16.5 ± 7.2 | 2.63 ± 2.05 | B |
| Basal section (> 45 mm, n = 5) | 7.4 ± 11.0 | 0.29 ± 0.17 | A |
Average values and SE are given. Statistically significant differences for homogeneous variance groups for each geographical area are indicated with letters in the rightmost column (Kruskal–Wallis test and Dunn’s test with Bonferroni correction, p < 0.05).
aRelativized to the potential diffusion rate measured at the root tip.