
National gene conservation unit number: DNK00087 Date of collection of the field data entered: 2000 Date of the most recent visit: 2015 Location Unit country: Denmark Unit province or state: - Unit department or county: - Unit municipality: - Unit local name: Gjern Bakker Ownership of the unit: Public Unit elevation [m a.s.l.]: 60 - 60 Unit surface area [ha]: 27.6 Coordinates (Public coordinates): Latitude (Decimal):56.2176 \| Longitude (Decimal): 9.6932 Soil: Haplic Podzols Climate Mean monthly temperature and mean monthly precipitation² Climatic zone: Boreal / Alpine. Environmental zone:Cold and mesic. Aridity index: 1.345 Species All tree species reported in the unit: *Sorbus aucuparia; Betula pendula; Hedera helix; Betula pubescens; Quercus petraea* Target species for conservation in the GCU: **Betula pendula, Betula pubescens, Quercus petraea, Sorbus aucuparia Unit type: Gene reserve forest Target species: Betula pendula 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 (%): 80% Estimated number of reproducing trees (interval): 500 - 4999 Status of long-term viable regeneration: - Management Population management: - Predominant silvicultural system: No silviculture Target species: Betula pubescens 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 (%): 80% Estimated number of reproducing trees (interval): 500 - 4999 Status of long-term viable regeneration: - Management Population management: - Predominant silvicultural system: No silviculture Target species: Quercus petraea 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 (%): 80% Estimated number of reproducing trees (interval): 500 - 4999 Status of long-term viable regeneration: - Management Population management: - Predominant silvicultural system: No silviculture Target species: Sorbus aucuparia 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 (%): 15% Estimated number of reproducing trees (interval): 500 - 4999 Status of long-term viable regeneration: - Management Population management: - Predominant silvicultural system: No silviculture**

National gene conservation unit number: DNK00087
Date of collection of the field data entered: 2000
Date of the most recent visit: 2015

Location

Unit country: Denmark
Unit province or state: -
Unit department or county: -
Unit municipality: -
Unit local name: Gjern Bakker
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 60 - 60
Unit surface area [ha]: 27.6
Coordinates (Public coordinates): Latitude (Decimal):56.2176 | Longitude (Decimal): 9.6932

Soil: Haplic Podzols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 1.345

Species

All tree species reported in the unit: Sorbus aucuparia; Betula pendula; Hedera helix; Betula pubescens; Quercus petraea
Target species for conservation in the GCU: Betula pendula, Betula pubescens, Quercus petraea, Sorbus aucuparia

Unit type: Gene reserve forest

Target species: Betula pendula
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 (%): 80%
Estimated number of reproducing trees (interval): 500 - 4999
Status of long-term viable regeneration: -

Management
Population management: -
Predominant silvicultural system: No silviculture

Target species: Betula pubescens
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 (%): 80%
Estimated number of reproducing trees (interval): 500 - 4999
Status of long-term viable regeneration: -

Management
Population management: -
Predominant silvicultural system: No silviculture

Target species: Quercus petraea
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 (%): 80%
Estimated number of reproducing trees (interval): 500 - 4999
Status of long-term viable regeneration: -

Management
Population management: -
Predominant silvicultural system: No silviculture

Target species: Sorbus aucuparia
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 (%): 15%
Estimated number of reproducing trees (interval): 500 - 4999
Status of long-term viable regeneration: -

Management
Population management: -
Predominant silvicultural system: No silviculture