National gene conservation unit number: Le Ramier de Bigorre
Population number: -

GCU
Date of collection of the field data entered: 2000
Date of the most recent visit: 2020

POPULATION
Year of Establishment of the GCU for the species: 2000
Date (or partial of date) of the most recent visit: 2020

Location

Unit country: France
Unit province or state: OCCITANIE
Unit department or county: HAUTE-GARONNE
Unit municipality: MERVILLE
Unit local name: Ramier de Bigorre
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 117 - 117
Unit surface area [ha]: 70
Coordinates ( Public coordinates): Latitude (Decimal):43.7231 | Longitude (Decimal): 1.3389

Soil: Calcaric Fluvisols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Warm temperate.
Environmental zone:Warm temperate and mesic.
Aridity index: 0.684

Species

All tree species growing in the unit: Salix alba; Populus nigra; Ulmus laevis
Target species for conservation in the GCU: Ulmus laevis

Unit type: Biodiversity conservation (habitats AND/or species)

Target species: Ulmus laevis
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 (%): 70%
Estimated number of reproducing trees (interval): 500 - 4999
Status of long-term viable regeneration: Sporadic

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