Drained by humans, rewetted by beavers—opposing forces shape boreal wetlands

Boreal forests and peatlands are shaped by hydrological changes caused by both human activity and natural processes. In a recent study carried out in the Evo area in southern Finland, researchers examined how forestry drainage and beaver-induced flooding have transformed the landscape over the past 60 years. They combined historical maps, aerial imagery from different decades, current geospatial data and long-term field observations.