Translate the following English sentence to French:
"At the Commission's suggestion, the mudflats at Stegrennan were formally included in the Boyne Estuary special protection area, from which they had previously been excluded."
À la demande de la Commission, la laisse de vase de Stegrennan a été incluse formellement dans la zone de protection spéciale de l'estuaire de la Boyne, dont elle ne faisait pas partie auparavant.