The Conversation
International · 1 hrs ago
✦ 78◉ Centre
River wildlife moves freely once dams are removed – but so too can invasive species
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Quality 78/100
Partisan intensity 35/100
ObjectivePartisan
◉ Centre ✓ Fair headline
The article examines how removing dams and weirs from rivers benefits aquatic wildlife mobility and ecosystem restoration, while also noting the unintended consequence that invasive species can spread more easily once barriers are removed.
River wildlife moves freely once dams are removed – but so too can invasive species
Weirs and dams act as barriers within river ecosystems – removing them affects how aquatic wildlife and invasive species move. Bardhok Ndoji/Shutterstock
Almost a quarter of all freshwater species are threatened with extinction. The removal of human-made barriers from rivers, such as dams and weirs, is a popular way to restore water flow and sediment transport to its natural state and allow fish and other aquatic wildlife to move more freely.
There are more than 1.2 million barriers in European
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