43937
The Coastal Zone
- Threats To Salt Marsh
Chichester Harbour
- Erosion Wave action (including wash from
boats) can damage and erode the marsh
- saltmarsh need to ‘move’ in response to changing
conditions. Many saltmarshes are being 'squeezed' between
the rising sea and fixed flood defence wall
- Dredging to maintain the channels may
also affect the movement of sediment and
hence the state of the saltmarsh
- Sea level is rising due to climate
change and also because the land
along the south east of England is tilting
towards the sea.
- Defences to protect the land from the rising sea
may be built on saltmarsh or they may change the
movement of the sediment necessary to maintain
saltm
- Erosion Wave action (including wash from
boats) can damage and erode the marsh
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