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  4. N1-6 - Pelouses des dunes côtières fixées (dunes grises) de la Méditerranée et de la Macaronésie
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N1-6 - Pelouses des dunes côtières fixées (dunes grises) de la Méditerranée et de la Macaronésie

Mediterranean and Macaronesian coastal dune grassland (grey dune)
N1-5 - Pelouses des dunes côtières fixées (dunes grises) de l'Atlantique et de la Baltique
N1-9 - Landes à Calluna et Ulex des dunes côtières de l'Atlantique

Classification des habitats EUNIS 2022

Descriptif de l'habitat

Stable (grey) dunes of fixed sands along the Mediterranean and Macaronesian coasts, and of the thermo-Atlantic coasts of Portugal, southwestern Spain and North Africa inland from wind erosion and salt deposition. They have a more or less complete cover of graminoids and herbs, often with a contingent of colourful spring annuals capitalising on early rains. The flora varies according to regional climate and dune topography. They may represent a temporary phase, giving way to evergreen sclerophyll scrub and woodland, or may form more permanent grassland at sites not suitable for shrubland. Through much of the Mediterranean, the habitat has been destroyed, contaminated by the invasion of non-native species or is much influenced by tourism, urbanisation, infrastructure development, arable cultivation, nitrogen deposition and afforestation.

Espèces diagnostiques

Vulpia fasciculata, Medicago marina, Pseudorlaya pumila, Medicago littoralis, Cyperus capitatus, Malcolmia ramosissima, Pancratium maritimum, Erodium laciniatum, Silene niceensis, Lagurus ovatus, Elytrigia juncea, Crucianella maritima, Euphorbia terracina, Silene colorata, Cutandia maritima, Eryngium maritimum, Centaurea spinosa, Ononis variegata, Echinophora spinosa, Lotus cytisoides

Espèces constantes

Elytrigia juncea, Medicago marina, Eryngium maritimum, Pancratium maritimum, Lagurus ovatus, Vulpia fasciculata, Medicago littoralis, Cyperus capitatus, Lotus cytisoides, Silene colorata, Ammophila arenaria, Sporobolus pungens, Crucianella maritima, Cakile maritima, Euphorbia terracina, Pseudorlaya pumila, Helichrysum stoechas, Echinophora spinosa, Euphorbia paralias, Cutandia maritima

Espèces dominantes

Crucianella maritima, Centaurea spinosa

Bibliography

 European Topic Centre on Biological Diversity, 2021. EUNIS terrestrial habitat classification 2021 including crosswalks. ETC/BD-EEA. Table Excel transmise par S. Hennekens (Alterra) le 14/02/2022. (Source)