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| Ecological characteristics | C1 | C2 | C3 | C4 |
| DBH (cm) | >30 | >30 | from 10 to 45 | from 10 to 20 |
| Healthstatus | good | good | bad | good |
| Morphological plasticity | Erect trunk | Erect trunk | reiterated axis | Erect trunk |
| Presence of Hedera helix | yes | yes | rare | No |
| Presence of Clematis vitalba | yes | no | no | No |
| Presence of Viscum album | no | no | yes | No |
| Forest architecture above the tree | large gap | small gap | overtopping | small gap |
