National gene conservation unit number: 81
Population number: -

GCU
Date of collection of the field data entered: 1996
Date of the most recent visit: 2006

POPULATION
Year of Establishment of the GCU for the species: 1996
Date (or partial of date) of the most recent visit: 1996

Location

Unit country: Austria
Unit province or state: Vorarlberg
Unit department or county: Bregenz
Unit municipality: -
Unit local name: Naturwaldreservat "Rohrach" (LGBl.Nr. 43/1992), an der Staatsgrenze zur BRD
Ownership of the unit: Private
Unit elevation [m a.s.l.]: 480 - 720
Unit surface area [ha]: 48
Coordinates ( Restricted coordinates): Latitude (Decimal): 47…**** | Longitude (Decimal): 9.…****

Soil: Dystric Cambisols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 2.505

Species

All tree species growing in the unit: Acer pseudoplatanus; Taxus baccata; Picea abies; Fraxinus excelsior; Fagus sylvatica; Abies alba
Target species for conservation in the GCU: Abies alba, Acer pseudoplatanus, Fagus sylvatica, Fraxinus excelsior, Picea abies, Taxus baccata

Unit type: Gene reserve forest, Biodiversity conservation (habitats AND/or species), Protective forest area (soil, water, timber line, etc.)

Target species: Fraxinus excelsior
Status of the target species in the GCU: Pending
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): 500 - 4999
Status of long-term viable regeneration: -

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