National gene conservation unit number: 01JGD001
Date of collection of the field data entered: 1995
Date of the most recent visit: 2022

Location

Unit country: Lithuania
Unit province or state: Panevezys
Unit department or county: Birzai
Unit municipality: Paroveja
Unit local name: Birzai giria black alder state genetic reserve
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 75 - 75
Unit surface area [ha]: 2.6
Coordinates (Public coordinates): Latitude (Decimal):56.2611 | Longitude (Decimal): 24.9794

Soil: Gleyic Luvisols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 1.163

Species

All tree species reported in the unit: Alnus glutinosa; Betula pendula
Target species for conservation in the GCU: Alnus glutinosa

Unit type: Gene reserve forest

Target species: Alnus glutinosa
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 (%): 81%
Estimated number of reproducing trees (interval): 50 - 499
Status of long-term viable regeneration: -

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