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Silvi (Subject) / regeneration (Lesson)
- Which are the different sources of natural regeneration? • Seed trees, shelter trees • Bulb • Vegetative regeneration (shoots from stems and roots) • Seedbanks (beeches, oak, Douglas fire )
- Which are the different sources of artificial regeneration? • Seedlings • Cuttings • Sowings • Plants
- Effect of different management stages on regeneration. Final felling? - Destroys steady state - Removes mother trees - Hurt / injure small trees with big machines - Enables competition with ground vegetation
- Effect of different management stages on regeneration. Seedling? - Bring in non-native species - Irritate balance of natural regeneration
- Effect of different management stages on regeneration. Cleaning? - kill small / young trees with treatment - Set the final distribution of species - Disturb natural selection - Supports non-native species
- Effect of different management stages on regeneration. - Kill small / young trees with treatment - Set the final distribution of species - Disturb natural selection - Supports non-native species
- What can possibly beeing controlled in both regenerations? • outplanting window • provenance and genetically improved • density • outplanting tool • species
- planting material from nurseries. Characteristics? • species • seed source • nursery routines, crop schedule • storage • distribution • pre-planting maintenance • handling of seedlings
- site conditions. characteristics? • critical site factors identified • harvest intensity/form • site preparation required • site prep- quality • potential planting spots • planting operation
- Regeneration in peatlands? Problems with CC? • CC in peatlands = Watertable, frost damage, ground vegetation competition • solution = let shelter trees remain PLUS mounted planting
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