Habitat 2150* Atlantic decalcified fixed dunes (Calluno-ulicetea)

 

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GENERAL INFORMATION

010 Juan Garcia de LomasIt is a habitat that is restricted to the Atlantic coasts of the southeast of the peninsula, exclusive to Huelva and the Gulf of Cadiz. They are established on flat dunes that are consolidated and far from the first line of the coast and stabilised by Mediterranean scrubland. Due to this, they show a progressive development of the soil towards more mature states.

When this development occurs in rainy systems and over fixed dunes of a flat topography, it tends towards a more acidic soil than normal due to elimination through the washing of the carbonates present in the substrate. In these circumstances, the plant composition changes, giving way to acidophilic heaths, that are better adapted to these extremely poor soils.

In the Cadiz-Huelva coast, this vegetation of decalcified dunes has an Atlantic vegetation of heath with an abundance of common heather (Calluna vulgaris), Ulex australis, Erica scoparia, Erica umbellata and Halimium halimifolium.

WHERE CAN IT BE FOUND?

In Europe, it is found in the Atlantic region. In Spain, this habitat is exclusive to the Andalusian Atlantic coast. It is mainly focussed in the Atlantic region.

WHAT ARE THE THREATS?

  • Presence of exotic species.
    Inadequate forestry management (direct elimination of characteristic herbaceous and shrub species).
    Expansion and densification of forest plantations (pine and eucalyptus).
    Frequent forest fires.

IMPROVEMENTS TO BE MADE

1. Fire control.
2. Recovery of the original herbaceous coverage and stabilisation of the dune system.
3. Elimination of buildings and other artificial elements.
4. Regulation of tourism pressure.
5. Implementation of good forestry practices.

Representative species of the Atlantic decalcified fixed dunes.