
National gene conservation unit number: CHE00046 Date of collection of the field data entered: 2020 Date of the most recent visit: 2020 Location Unit country: Switzerland Unit province or state: AG Unit department or county: Baden Unit municipality: Villigen Unit local name: Wasserschloss, Untere Aare Ownership of the unit: Other Unit elevation [m a.s.l.]: 333 - 340 Unit surface area [ha]: 107 Coordinates (Public coordinates): Latitude (Decimal):47.4741 \| Longitude (Decimal): 8.1896 Soil: Haplic Luvisols Climate Mean monthly temperature and mean monthly precipitation² Climatic zone: Cool temperate. Environmental zone:Cool temperate and moist. Aridity index: 1.432 Species All tree species reported in the unit: *Populus nigra* Target species for conservation in the GCU: *Populus nigra* Unit type: Gene reserve forest, Biodiversity conservation (habitats AND/or species) Target species: Populus nigra 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 : Autochtonous Population share (%): 50% Estimated number of reproducing trees (interval): 500 - 4999 Status of long-term viable regeneration: - Management Population management: Minimum intervention allowed Predominant silvicultural system: Close-to-natural forestry (continuous cover forest, selective logging)

National gene conservation unit number: CHE00046
Date of collection of the field data entered: 2020
Date of the most recent visit: 2020

Location

Unit country: Switzerland
Unit province or state: AG
Unit department or county: Baden
Unit municipality: Villigen
Unit local name: Wasserschloss, Untere Aare
Ownership of the unit: Other
Unit elevation [m a.s.l.]: 333 - 340
Unit surface area [ha]: 107
Coordinates (Public coordinates): Latitude (Decimal):47.4741 | Longitude (Decimal): 8.1896

Soil: Haplic Luvisols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Cool temperate.
Environmental zone:Cool temperate and moist.
Aridity index: 1.432

Species

All tree species reported in the unit: Populus nigra
Target species for conservation in the GCU: Populus nigra

Unit type: Gene reserve forest, Biodiversity conservation (habitats AND/or species)

Target species: Populus nigra
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 : Autochtonous
Population share (%): 50%
Estimated number of reproducing trees (interval): 500 - 4999
Status of long-term viable regeneration: -

Management
Population management: Minimum intervention allowed
Predominant silvicultural system: Close-to-natural forestry (continuous cover forest, selective logging)