© CNRS Images - 2012

Etang de Berre, a body of water as it is (The)

Numéro de notice

3967

Durée

00:49:00

Année de production

2012

Support Original

HD
16/9
Couleur
Sonore

Director(s)

DALAISE Marcel

Résumé

The Berre pond is one of the largest brackish water ponds in Europe. Located at the outskirts of Marseille, it is today one of the most studied lagoons around the Mediterranean. Researchers in different disciplines (historian, ecologists, industry, politicians) elaborate on theindustrial history of this place and demonstrate how it has become a threatened and threatening place. They try to find solutions to rehabilitate this lake and its ecosystem into a living place for those staying on its banks.
In the 19th and 20th centuries, the development of the chemical, petrochemical and aeronautical industries seriously polluted its waters with heavy metals and hydrocarbons, precluding any fishing and bathing. In 1966, a solution to the pollution was thought to to be found with the EDF hydroelectric power plant in Saint-Chamas coming into operation and the spills of billions of tons of water year into the lake. In fact, this release of fresh water and silt resulted in reduced water salinity and jeopardised ecosystems, causing the proliferation of green algae, an oxygen deficit in deep waters and preventing the development of some animal species. Currently different solutions for the rehabilitation of the Etang de Berre are considered, such as the diversion of the EDF canal towards the Rhône or the reopening of the Rove tunnel which would allow the arrival of salt water from the sea.

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