Pa amddiffyniadau a roddwyd ar waith ar gyfer Gwastadeddau Gwent o ganlyniad i golli cynefin bywyd gwyllt a achoswyd gan ddatblygiad Morglawdd Bae Caerdydd, ac a oes unrhyw rai o'r amddiffyniadau hyn yn parhau i fod ar waith?
The key protection arising from the Cardiff Bay Barrage was the creation of the Newport Wetlands compensatory habitat on the Gwent Levels at Uskmouth. The site was chosen because it offered the opportunity to create and manage large areas of wetland habitat capable of supporting many of the bird species affected by the loss of the Cardiff Bay mudflats. The reserve was officially created on 20 December 2000, shortly after the barrage became operational.
The compensation site subsequently received formal statutory protection as a National Nature Reserve, designated as a Site of Special Scientific Interest and is linked to international conservation designations for the Severn Estuary. These protections remain in force, providing ongoing legal protection and have been supplemented by broader planning and ecological policies aimed at conserving the Gwent Levels as one of Wales' most important wetland landscapes.