Does floodplain restoration help to reduce extremes of water availability and improve biodiversity?
Healthy, intact floodplains play an important role in mitigating extremes of water availability (droughts and floods) expected under climate change. Compared to other ecosystems, intact floodplains also support a disproportionately high biodiversity.
Floodplains often become detached from adjacent water courses by flood embankments resulting in a loss of these characteristics and reconnection through removing embankments can help to regain lost functions in river corridors. However, case studies of the effects on floodplain water levels and plant ecology remain rare.