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Common Alder (Alnus glutinosa) is a wetland species ranging from Siberia to N. Africa
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Its wood has been utilised for millennia in water management, clog-making and coppicing. The wood has the advantage of being water resistant but light.
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It is beneficial to nearby species as its roots can break up wet, compacted soil and convert nitrogen
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It can reach 25m with up to 1m thick stems