Eurasian aspen
Populus tremula
The Eurasian aspen is a deciduous pioneer tree species primarily known for its characteristic leaves. These leaves feature a laterally flattened petiole, causing them to vibrate or 'quake' even in the gentlest breeze. The tree grows very rapidly, requires full sunlight, and typically reaches an age of around 100 years. Ecologically, it plays a vital role as a host plant for over 100 insect species and as a colonizer of clear-cut areas.
Details
Oxygen production
High photosynthetic rate during the growth phase leads to significant oxygen release.
Habitat function
Food source for insects, nesting site for cavity nesters in deadwood, and shelter for young growth.
Nutrient uptake
Efficient uptake of soil nitrogen; contributes to nutrient dynamics in the forest ecosystem.
Food source for
Caterpillars of the Poplar Admiral, leaf beetles, beavers (bark), and red deer (buds and shoots).
Human use
Wood for matches, pulp for the paper industry, core wood for furniture, and sauna construction.
Ecology
Ecological role
Important pioneer species for reforestation; soil improver due to easily decomposable leaf litter.
Natural predators
Browsing by deer, beavers, and wood-decaying fungi such as the aspen bracket fungus.
Competitor species
Late-successional tree species like European beech (Fagus sylvatica) and Norway spruce (Picea abies) that shade it out.
Ecosystem service
Carbon sequestration, erosion control, and providing habitat for biodiversity.
Threats
Loss of open woodland structures, intensive forestry, and land drainage.
Scientific profile
Profile
Protection & threats
Main threats
Currently not threatened; local declines due to forestry preference for other species or drainage of wetland sites.