Management of Mediterranean coastal dunes

Abstract

This paper gives some theoretical concepts of dune management as well as practical examples of how actual measures should be carried out. Dune management is defined as all measures aimed at the preservation and restoration of the natural values of a coastal sand dune area. It is essential that beach and foreshore are seen as parts of a whole dune system. Management must take into account all processes within this system. It should aim at nature conservation and wise use of coastal resources and all forms of land use should be ecologically sustainable. Dune management should work as much as possible ‘with’ the natural processes and not ‘against’ them. Four types of Mediterranean dune systems (including Portugal and SW Spain) are distinguished:: mainland dunes, lagoon-bay barrier dunes, delta dunes and remnant dunes. Like in most parts of the world, Mediterranean dunes fulfill several functions at the same time. The following functions will be dealt with: nature management, coastal defence and erosion, dune stabilisation and afforestation, agriculture, tourism and urbanisation, recreation, golf, information and education. The concepts of management which are considered include: sustainable use, large and coherent units, compensation, management planning, environmental impact assessment and function analysis. Dune stabilisation is not always considered necessary. In case of stabilisation by planting, only indigenous species should be used, preferably pioneers and not trees. Planting of exotic species should be avoided.