National gene conservation unit number: SK 292-2014
Date of collection of the field data entered: 2014
Date of the most recent visit: 2014

Location

Unit country: Sweden
Unit province or state: Vastra Gotalands lan
Unit department or county: Vastra Gotalands lan
Unit municipality: Tidaholm
Unit local name: Jarnasen
Ownership of the unit: Private
Unit elevation [m a.s.l.]: 147 - 168
Unit surface area [ha]: 1.5
Coordinates (Public coordinates): Latitude (Decimal):58.1929 | Longitude (Decimal): 14.0651

Soil: Haplic Podzols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 1.191

Species

All tree species reported in the unit: Prunus avium; Corylus avellana; Quercus robur
Target species for conservation in the GCU: Corylus avellana, Prunus avium, Quercus robur

Unit type: Biodiversity conservation (habitats AND/or species)

Target species: Corylus avellana
Status of the target species in the GCU: -
Category of the target species in the GCU: In situ
Origin of the target species in the GCU : Autochtonous
Population share (%): 25%
Estimated number of reproducing trees (interval): 50 - 499
Status of long-term viable regeneration: -

Management
Population management: Conservation through active intervention carried out
Predominant silvicultural system: No silviculture

Target species: Prunus avium
Status of the target species in the GCU: -
Category of the target species in the GCU: In situ
Origin of the target species in the GCU : Autochtonous
Population share (%): 100%
Estimated number of reproducing trees (interval): 15 - 49
Status of long-term viable regeneration: -

Management
Population management: Conservation through active intervention carried out
Predominant silvicultural system: No silviculture

Target species: Quercus robur
Status of the target species in the GCU: -
Category of the target species in the GCU: In situ
Origin of the target species in the GCU : Autochtonous
Population share (%): 100%
Estimated number of reproducing trees (interval): 50 - 499
Status of long-term viable regeneration: -

Management
Population management: Conservation through active intervention carried out
Predominant silvicultural system: No silviculture