How will the hydropower boom affect global river ecosystems?

An interesting study of some IGB-colleagues…

The Freshwater Blog

Itaipu Hydropower Project on the Paraná River located on the border between Brazil and Paraguay. Image: Wikipedia

There are currently around 3,700 major new hydropower dam projects planned or under construction across the world, many of them in developing countries which lack widespread, reliable and affordable electricity supplies.  However, many of these same countries support biodiverse and relatively ‘natural’ large river systems, which raises questions of how to balance the potential ‘green’ energy gains from hydropower projects with the potential harm – barriers to fish migration, siltation, habitat change amongst others – they can cause to river ecosystems.

A new study ‘A global boom in hydropower dam construction‘, has been carried out by Professor Christiane Zarfl from the University of Copenhagen and colleagues at the Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB) in Berlin, including BioFresh head Klement Tockner. The research team compiled data on future major hydropower projects to predict how much energy would…

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