National gene conservation unit number: 60040005
Date of collection of the field data entered: 1998
Date of the most recent visit: 2014

Location

Unit country: Latvia
Unit province or state: -
Unit department or county: Aluksnes novads
Unit municipality: Liepnas pagasts
Unit local name: Liepna berzs
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 135 - 145
Unit surface area [ha]: 265.4
Coordinates (Public coordinates): Latitude (Decimal):57.3962 | Longitude (Decimal): 27.5656

Soil: Haplic Podzols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 1.237

Species

All tree species reported in the unit: Alnus glutinosa; Alnus incana; Betula pendula; Fraxinus excelsior; Picea abies; Populus tremula; Ulmus glabra
Target species for conservation in the GCU: Betula pendula

Unit type: Gene reserve forest, Protective forest area, Managed forest area

Target species: Betula pendula
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 (%): 98%
Estimated number of reproducing trees (interval): >5001
Status of long-term viable regeneration: Required management intervention

Management
Population management: Conservation through active intervention carried out
Predominant silvicultural system: Clear-cutting with natural regeneration