National gene conservation unit number: 60110001
Population number: -

GCU
Date of collection of the field data entered: 2002
Date of the most recent visit: 2021

POPULATION
Year of Establishment of the GCU for the species: 2002
Date (or partial of date) of the most recent visit: 2020

Location

Unit country: Latvia
Unit province or state: -
Unit department or county: Skriveru novads
Unit municipality: Skriveru pagasts
Unit local name: Jaunjelgava osis
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 85 - 95
Unit surface area [ha]: 160.96
Coordinates ( Public coordinates): Latitude (Decimal):56.6664 | Longitude (Decimal): 25.0562

Soil: Eutric Gleysols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 1.307

Species

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

Unit type: Gene reserve forest, Managed forest area

Target species: Fraxinus excelsior
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 (%): 84%
Estimated number of reproducing trees (interval): 501 - 5000
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