National gene conservation unit number: SK 40-2017
Date of collection of the field data entered: 2017
Date of the most recent visit: 2017

Location

Unit country: Sweden
Unit province or state: Sweden
Unit department or county: Vasterbottens lan
Unit municipality: Vannas
Unit local name: Langnas
Ownership of the unit: Private
Unit elevation [m a.s.l.]: 102 - 121
Unit surface area [ha]: 7.5
Coordinates (Public coordinates): Latitude (Decimal):63.9669 | Longitude (Decimal): 19.6902

Soil: Haplic Podzols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Boreal / Alpine.
Environmental zone:Cold and mesic.
Aridity index: 1.501

Species

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

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

Target species: Alnus incana
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 (%): 40%
Estimated number of reproducing trees (interval): 50 - 499
Status of long-term viable regeneration: -

Management
Population management: Conservation through active intervention carried out
Predominant silvicultural system: Close-to-natural forestry (continuous cover forest, selective logging)

Target species: Betula pubescens
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 (%): 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

Target species: Picea abies
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 (%): 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

Target species: Pinus sylvestris
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 (%): 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

Target species: Salix caprea
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 (%): 40%
Estimated number of reproducing trees (interval): 50 - 499
Status of long-term viable regeneration: -

Management
Population management: Conservation through active intervention carried out
Predominant silvicultural system: Close-to-natural forestry (continuous cover forest, selective logging)