
National gene conservation unit number: CHE00092 Date of collection of the field data entered: 2024 Date of the most recent visit: 2024 Location Unit country: Switzerland Unit province or state: AG Unit department or county: Aarau, Brugg, Gösgen, Laufenburg Unit municipality: Biberstein, Densbüren, Erlinsbach (AG), Kienberg, Küttigen, Ober Unit local name: Region Kettenjura Aargau Ownership of the unit: Other Unit elevation [m a.s.l.]: 460 - 863 Unit surface area [ha]: 340.262 Coordinates (Public coordinates): Latitude (Decimal):47.4261 \| Longitude (Decimal): 8.0184 Soil: Humic Cambisols Climate Mean monthly temperature and mean monthly precipitation² Climatic zone: Boreal / Alpine. Environmental zone:Cold and mesic. Aridity index: 1.972 Species All tree species reported in the unit: *Acer pseudoplatanus; Fraxinus excelsior* Target species for conservation in the GCU: **Acer pseudoplatanus, Fraxinus excelsior Unit type: Gene reserve forest, Biodiversity conservation Target species: Acer pseudoplatanus Status of the target species in the GCU: Included Category of the target species in the GCU: In situ Origin of the target species in the GCU : Autochthonous Population share (%): 75% Estimated number of reproducing trees (interval): >5001 Status of long-term viable regeneration: - Management Population management: Minimum intervention allowed Predominant silvicultural system: Close-to-nature forestry Target species: Fraxinus excelsior Status of the target species in the GCU: Included Category of the target species in the GCU: In situ Origin of the target species in the GCU : Autochthonous Population share (%): 75% Estimated number of reproducing trees (interval): >5001 Status of long-term viable regeneration: - Management Population management: Minimum intervention allowed Predominant silvicultural system: Close-to-nature forestry**

National gene conservation unit number: CHE00092
Date of collection of the field data entered: 2024
Date of the most recent visit: 2024

Location

Unit country: Switzerland
Unit province or state: AG
Unit department or county: Aarau, Brugg, Gösgen, Laufenburg
Unit municipality: Biberstein, Densbüren, Erlinsbach (AG), Kienberg, Küttigen, Ober
Unit local name: Region Kettenjura Aargau
Ownership of the unit: Other
Unit elevation [m a.s.l.]: 460 - 863
Unit surface area [ha]: 340.262
Coordinates (Public coordinates): Latitude (Decimal):47.4261 | Longitude (Decimal): 8.0184

Soil: Humic Cambisols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 1.972

Species

All tree species reported in the unit: Acer pseudoplatanus; Fraxinus excelsior
Target species for conservation in the GCU: Acer pseudoplatanus, Fraxinus excelsior

Unit type: Gene reserve forest, Biodiversity conservation

Target species: Acer pseudoplatanus
Status of the target species in the GCU: Included
Category of the target species in the GCU: In situ
Origin of the target species in the GCU : Autochthonous
Population share (%): 75%
Estimated number of reproducing trees (interval): >5001
Status of long-term viable regeneration: -

Management
Population management: Minimum intervention allowed
Predominant silvicultural system: Close-to-nature forestry

Target species: Fraxinus excelsior
Status of the target species in the GCU: Included
Category of the target species in the GCU: In situ
Origin of the target species in the GCU : Autochthonous
Population share (%): 75%
Estimated number of reproducing trees (interval): >5001
Status of long-term viable regeneration: -

Management
Population management: Minimum intervention allowed
Predominant silvicultural system: Close-to-nature forestry