National gene conservation unit number: BG 001
Date of collection of the field data entered: 2000
Date of the most recent visit: 2021

Location

Unit country: Bulgaria
Unit province or state: Bulgaria
Unit department or county: Veliko Tarnovo
Unit municipality: Elena
Unit local name: Kostel
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 810 - 830
Unit surface area [ha]: 9.4
Coordinates (Public coordinates): Latitude (Decimal):42.8619 | Longitude (Decimal): 26.0033

Soil: Eutric Planosols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Cool temperate.
Environmental zone:Cool temperate and dry.
Aridity index: 0.904

Species

All tree species reported in the unit: Acer platanoides; Acer pseudoplatanus; Fagus sylvatica; Fraxinus excelsior
Target species for conservation in the GCU: Acer pseudoplatanus

Unit type: Seed stand

Target species: Acer pseudoplatanus
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 : Autochthonous
Population share (%): 25%
Estimated number of reproducing trees (interval): 51 - 500
Status of long-term viable regeneration: Sporadic

Management
Population management: Conservation through active intervention carried out
Predominant silvicultural system: Close-to-nature forestry