National gene conservation unit number: NL.SI.4.3.21-01
Date of collection of the field data entered: 2019
Date of the most recent visit: 2019

Location

Unit country: Netherlands
Unit province or state: Drenthe
Unit department or county: -
Unit municipality: Aa en Hunze
Unit local name: Rolde, Geelbroek
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 15 - 15
Unit surface area [ha]: 8
Coordinates (Public coordinates): Latitude (Decimal):52.9482 | Longitude (Decimal): 6.5745

Soil: Gleyic Podzols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Cool temperate.
Environmental zone:Cool temperate and moist.
Aridity index: 1.386

Species

All tree species reported in the unit: Alnus glutinosa; Crataegus monogyna; Prunus padus; Quercus petraea; Quercus robur; Sorbus aucuparia
Target species for conservation in the GCU: Prunus padus

Unit type: Biodiversity conservation, Seed stand

Target species: Prunus padus
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 : Autochthonous
Population share (%): 70%
Estimated number of reproducing trees (interval): 15 - 50
Status of long-term viable regeneration: Continuous

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