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Doubts over conservation value of man-made salt marshes

21 September 2012 Last updated at 14:13 BST

A new report has raised doubts over a programme to create man-made salt marshes designed to save sections of our vanishing coastline.

The report says the man-made marshes, created under managed retreat as the coastline erodes, are not as rich in wildlife as natural marsh and fail to meet European standards on conservation.