National gene conservation unit number: 60060007
Date of collection of the field data entered: 1986
Date of the most recent visit: 2014

Location

Unit country: Latvia
Unit province or state: -
Unit department or county: Vilakas novads
Unit municipality: Vecumu pagasts
Unit local name: Vilaka melnalksnis
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 78 - 90
Unit surface area [ha]: 97.67
Coordinates (Public coordinates): Latitude (Decimal):57.1831 | Longitude (Decimal): 27.8206

Soil: Gleyic Luvisols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 1.086

Species

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

Unit type: Gene reserve forest, Biodiversity conservation (habitats AND/or species)

Target species: Alnus glutinosa
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 (%): 100%
Estimated number of reproducing trees (interval): > 5000
Status of long-term viable regeneration: Sporadic

Management
Population management: Minimum intervention allowed
Predominant silvicultural system: No silviculture