Restoring seabed aggregates site ‘not worth it’

The high cost of restoring an aggregates site off the Thames estuary cannot be justified by the uncertain benefits, research finds

Post-extraction restoration of an aggregates site off of the Thames estuary would be costly and would produce uncertain benefits, according to new research.

The study, carried out by scientists at the Plymouth Marine Laboratory, the Centre for Environment, Fisheries and Aquaculture and others, said that its conclusions are specific to the site considered.

But they raise wider questions about the effectiveness of and necessity for undersea restoration after extraction or other disturbance of the seabed.

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