National gene conservation unit number: 53JGD006
Population number: -

GCU
Date of collection of the field data entered: 1993
Date of the most recent visit: 2020

POPULATION
Year of Establishment of the GCU for the species: 1993
Date (or partial of date) of the most recent visit: 2020

Location

Unit country: Lithuania
Unit province or state: Siauliai
Unit department or county: Siauliai
Unit municipality: Raudenai
Unit local name: Tryskiai forest black alder II state genetic reserve
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 120 - 120
Unit surface area [ha]: 7.6
Coordinates ( Public coordinates): Latitude (Decimal):56.0567 | Longitude (Decimal): 22.7239

Soil: Calcic Luvisols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 1.132

Species

All tree species growing in the unit: Pinus sylvestris; Alnus glutinosa; Picea abies; 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 (%): 63%
Estimated number of reproducing trees (interval): 500 - 4999
Status of long-term viable regeneration: -

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