National gene conservation unit number: DNK00031
Date of collection of the field data entered: 2000
Date of the most recent visit: 2000

Location

Unit country: Denmark
Unit province or state: -
Unit department or county: -
Unit municipality: -
Unit local name: Hammersholm
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 81 - 81
Unit surface area [ha]: 22
Coordinates (Public coordinates): Latitude (Decimal):55.2787 | Longitude (Decimal): 14.7729

Soil: Haplic Luvisols

Climate

Mean monthly temperature and mean monthly precipitation2

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 2.155

Species

All tree species reported in the unit: Sorbus aucuparia; Prunus avium; Corylus avellana; Malus sylvestris; Quercus robur; Carpinus betulus; Betula pendula; Acer platanoides; Lonicera periclymenum; Fraxinus excelsior; Crataegus laevigata; Hedera helix; Lonicera xylosteum
Target species for conservation in the GCU: Acer platanoides, Betula pendula, Carpinus betulus, Fraxinus excelsior, Malus sylvestris, Prunus avium, Quercus robur, Sorbus aucuparia

Unit type: Gene reserve forest


Target species: Acer platanoides
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): 50 - 499
Status of long-term viable regeneration: -

Management
Population management: -
Predominant silvicultural system: No silviculture


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: Carpinus betulus
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): 50 - 499
Status of long-term viable regeneration: -

Management
Population management: -
Predominant silvicultural system: No silviculture


Target species: Fraxinus excelsior
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): 50 - 499
Status of long-term viable regeneration: -

Management
Population management: -
Predominant silvicultural system: No silviculture


Target species: Malus sylvestris
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): 50 - 499
Status of long-term viable regeneration: -

Management
Population management: -
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 (%): 15%
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 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 (%): 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): 50 - 499
Status of long-term viable regeneration: -

Management
Population management: -
Predominant silvicultural system: No silviculture