Drained by humans, rewetted by beavers – opposing forces shape boreal wetlands puhakain@helsinki.fi Wed, 05/08/2026 - 15:54 Beavers can contribute to wetland restoration. Beavers have the advantage of being able to re-establish wetter conditions without the need for costly restoration measures. Boreal forests and peatlands are shaped by hydrological changes caused by both human activity and natural processes.