National gene conservation unit number: 165
Date of collection of the field data entered: 2008
Date of the most recent visit: 2009

Location

Unit country: Croatia
Unit province or state: Brodsko posavska
Unit department or county: Nova Gradiška
Unit municipality: Nova Gradiška
Unit local name: Ključevi
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 90 - 93
Unit surface area [ha]: 40.29
Coordinates (Public coordinates): Latitude (Decimal):45.1833 | Longitude (Decimal): 17.3583

Soil: Dystric Gleysols

Climate

Mean monthly temperature and mean monthly precipitation²

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

Species

All tree species reported in the unit: Quercus robur
Target species for conservation in the GCU: Quercus robur

Unit type: Gene reserve forest, Seed stand

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 (%): 100%
Estimated number of reproducing trees (interval): 500 - 4999
Status of long-term viable regeneration: -

Management
Population management: -
Predominant silvicultural system: -