National gene conservation unit number: 155
Date of collection of the field data entered: 1999
Date of the most recent visit: 2000

Location

Unit country: Turkey
Unit province or state: ZONGULDAK
Unit department or county: ULUS
Unit municipality: -
Unit local name: DRAHNA
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 1000 - 1250
Unit surface area [ha]: 268.5
Coordinates (Public coordinates): Latitude (Decimal):41.7111 | Longitude (Decimal): 32.9269

Soil: Orthic Acrisols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Cool temperate.
Environmental zone:Cool temperate and moist.
Aridity index: 1.740

Species

All tree species reported in the unit: Quercus petraea; Abies bornmuelleriana; Fagus orientalis; Carpinus orientalis
Target species for conservation in the GCU: Fagus orientalis

Unit type: Gene reserve forest

Target species: Fagus orientalis
Status of the target species in the GCU: Included
Category of the target species in the GCU: In situ
Origin of the target species in the GCU : Autochtonous
Population share (%): 90%
Estimated number of reproducing trees (interval): > 5000
Status of long-term viable regeneration: -

Management
Population management: Minimum intervention allowed
Predominant silvicultural system: Close-to-natural forestry (continuous cover forest, selective logging)