From: Low-level retention forestry, certification, and biodiversity: case Finland
Standard | Criterion | Minimum number | Minimum size | Substitution with dead trees | Reference |
---|---|---|---|---|---|
SMS/PEFC | #21: “Retention trees shall be left in regeneration areas” | 5 | Not defined, but wording indicates coarseness | No, but it is recommended that dead trees should be retained | 1 |
FFCS/PEFC | #12: “Retention trees shall be left in regeneration areas” | 5 (5-10) | ≥ 10 cm | Yes, DBH ≥ 10 cm | 2 |
PEFC | #13: “Retention trees and decaying wood shall be left in forestry operations” | 5 (5-10) | > 10 cm | Yes, DBH > 20 cm | 3 |
PEFC | #14: “Retention trees and decaying tree stems shall be left on site in forestry operations” | 10 | > 10 cm | Yes, DBH > 20 cm | 4 |
FSC | #6.3.2: “Retention trees shall be preserved in each harvesting operation” | 10 | ≥ 20 cm | No, dead trees must be retained or established according to another criterion (6.3.1) | 5 |
FSC | #6.3.2: “On a regeneration felling compartment, the forest owner shall permanently retain: minimum average of 10 large-diameter … living trees of native species per hectare.” | 10 | > 20 cm in Southern Finland, > 15 cm in Northern Finland | No, dead trees must be retained according to another criterion (6.3.1) | 6 |