Table 1. One-way ANOVA results for the eight individuals investigated.
| Trees | Variables | Control ring (mean ± SD) | Injury ring (mean ± SD) | P-value | Change (%) |
| Alnus I | AVLA (µm2) | 939.70±436.13 | 381.75±143.31 | <0.001 | −59 |
| AVLD (µm) | 69.11±17.22 | 43.76±8.74 | <0.001 | −37 | |
| VN | 1074 | 486 | −55 | ||
| Alnus II | AVLA (µm2) | 1323.44±669.43 | 684.80±332.87 | <0.001 | −48 |
| AVLD (µm) | 80.11±21.76 | 59.06±14.98 | <0.001 | −26 | |
| VN | 1774 | 767 | −57 | ||
| Alnus III | AVLA (µm2) | 1130.37±533.41 | 472.45±191.52 | <0.001 | −58 |
| AVLD (µm) | 74.78±18.93 | 48.70±10.39 | <0.001 | −35 | |
| VN | 1825 | 583 | −68 | ||
| Alnus IV | AVLA (µm2) | 1314.29±656.48 | 688.50±317.58 | <0.001 | −48 |
| AVLD (µm) | 83.56±22.92 | 59.85±14.61 | <0.001 | −28 | |
| VN | 2390 | 1233 | −48 | ||
| Betula I | AVLA (µm2) | 2096.60±998.67 | 827.61±424.07 | <0.001 | −61 |
| AVLD (µm) | 103.93±26.73 | 63.65±16.56 | <0.001 | −39 | |
| VN | 1037 | 590 | −43 | ||
| Betula II | AVLA (µm2) | 2050.40±1147.31 | 737.25±298.69 | <0.001 | −64 |
| AVLD (µm) | 101.05±30.25 | 61.52±13.45 | <0.001 | −39 | |
| VN | 1140 | 404 | −65 | ||
| Betula III | AVLA (µm2) | 1696.99±905.18 | 753.63±410.48 | <0.001 | −56 |
| AVLD (µm) | 91.26±25.20 | 62.33±17.76 | <0.001 | −32 | |
| VN | 1098 | 421 | −62 | ||
| Betula IV | AVLA (µm2) | 1199.22±653.68 | 694.99±346.04 | <0.001 | −42 |
| AVLD (µm) | 76.21±21.60 | 61.11±16.08 | <0.001 | −20 | |
| VN | 836 | 580 | −31 |
The average vessel lumen area (AVLA), the average vessel lumen diameter (AVLD), and the number of vessels (VN) were calculated in the injury ring built during the growing season following wounding and in the control ring laid down the previous year. Changes (%) in vessel lumen size between the two rings were tested for significance with one-way ANOVA, performed for each tree using the non-averaged lumen area/diameter of all the vessels analyzed.