National gene conservation unit number: GR43
Population number: -

GCU
Date of collection of the field data entered: 2008
Date of the most recent visit: 2019

POPULATION
Year of Establishment of the GCU for the species: 2005
Date (or partial of date) of the most recent visit: 2014

Location

Unit country: Finland
Unit province or state: -
Unit department or county: -
Unit municipality: Lieksa
Unit local name: Koli
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 95 - 220
Unit surface area [ha]: 140.75
Coordinates ( Public coordinates): Latitude (Decimal):63.1084 | Longitude (Decimal): 29.7980

Soil: Haplic Podzols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 2.378

Species

All tree species growing in the unit: Pinus sylvestris; Betula pubescens; Betula pendula; Alnus incana; Picea abies
Target species for conservation in the GCU: Betula pendula, Betula pubescens

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

Target species: Betula pendula
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 (%): 96%
Estimated number of reproducing trees (interval): 500 - 4999
Status of long-term viable regeneration: Requires management intervention

Management
Population management: Conservation through active intervention carried out
Predominant silvicultural system: Clear-cutting with natural regeneration (seed trees or strips)