The emphasis now placed on the concept of sediment cells as boundaries
for coastal defence groups, and the development of SMPs, should help
CPAs realise the importance of natural processes at the coast when
designing defence and protection schemes. However, this will only be the
case where defence groups exist, and where CPAs take up the challenge of
developing SMPs. Coastal landscapes have been produced by the natural
forces of wind, waves and tides, and many are nationally or
internationally important for their habitats and natural features. Past
practices at the coast, such as the construction of harbours, jetties
and traditional defence systems may have contributed to the
deterioration of the coast. English Nature (1992) have argued that if
practices and methods of coastal defence are allowed to continue, then
coastlines would be faced with worsening consequences, including: The
loss of mudflats and the birds which live on them Damage to geological
Sites of Special Scientific Interest (SSSIs) and scenic heritage by
erosion, due to the stabilisation of the coast elsewhere Cutting of
sediment supplies to beaches resulting in the loss of coastal wildlife
Cessation through isolation from coastal processes, of the natural
operation of spits, with serious deterioration of rare plants, animals
and geomorphological and scenic qualities (English Nature, 1992) A
number of designations, provided by national and international
legislation do exist to aid conservation.