National gene conservation unit number: NL.SI.4.4.09-01
Date of collection of the field data entered: 2018
Date of the most recent visit: 2018

Location

Unit country: Netherlands
Unit province or state: Drenthe
Unit department or county: -
Unit municipality: Norg
Unit local name: Norgerholt
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 9 - 10
Unit surface area [ha]: 22
Coordinates (Public coordinates): Latitude (Decimal):53.0568 | Longitude (Decimal): 6.4524

Soil: Gleyic Podzols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Cool temperate.
Environmental zone:Cool temperate and moist.
Aridity index: 1.410

Species

All tree species reported in the unit: Ilex aquifolium
Target species for conservation in the GCU: Ilex aquifolium

Unit type: Biodiversity conservation, Seed stand

Target species: Ilex aquifolium
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 (%): 50%
Estimated number of reproducing trees (interval): 501 - 5000
Status of long-term viable regeneration: Continuous

Management
Population management: No intervention allowed
Predominant silvicultural system: No silviculture