Young fresh leaves of green alder (Alnus alnobetula, GrĂ¼n-Erle)
Alnus alnobetula is a fast-growing, nitrogen-fixing shrub found in subalpine and boreal regions. It plays a key ecological role by stabilizing slopes, enriching poor soils through symbiosis with nitrogen-fixing bacteria (Frankia), and providing early cover in disturbed areas. Its dense thickets offer habitat and shelter for wildlife, while its leaves and catkins contribute to forest floor nutrient cycling.

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