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Fish passes can reconnect species with habitats blocked by dams – here's how they work

By Stephanie Januchowski-Hartley, Sêr Cymru Research Fellow in Environmental Sciences, Swansea University
Virgilio Hermoso, Investigador distinguido, Universidad de Sevilla

Over one million dams and culverts (tunnels that encircle rivers passing under roads) block the movements of fish and other wildlife in Europe. Scientists estimate that less than 1% of catchments in the UK are free of obstruction. A report released in 2020…

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