IBEROATLANTICA

Description

Grasslands dominated by Ammophila arenaria in somewhat fixed, inner areas of maritime sand dune systems.

Protection

Protected under the code 2120 ("Shifting dunes along the shoreline with Ammophila arenaria ['white dunes']") by the EU Habitat Directive.

Floristic Composition

Frequent species

Ammophila arenaria 100%, Eryngium maritimum 83%, Calystegia soldanella 71%, Euphorbia paralias 64%, Elytrigia juncea 53%, Thrincia saxatilis aggr. 44%, Festuca juncifolia 41%, Pancratium maritimum 20%, Lagurus ovatus 17%, Carex arenaria 16%, Crucianella maritima 14%, Linaria supina 13%, Achillea maritima 12%, Cutandia maritima 10%, Medicago marina 9%, Honckenya peploides 9%, Sonchus oleraceus 8%, Marcus-kochia littorea 8%, Helichrysum stoechas 7%, Koeleria pyramidata 7%, Linaria polygalifolia 7%, Sonchus bulbosus 7%, Hypochaeris radicata 7%, Medicago littoralis 7%, Reichardia gaditana 6%, Cynodon dactylon 6%, Oenothera biennis 6%, Polygonum maritimum 6%, Cakile maritima 5%, Rumex bucephalophorus 5%, Matthiola sinuata 5% view more...

Indicator species

Ammophila arenaria 0.99, Eryngium maritimum 0.55, Calystegia soldanella 0.52, Euphorbia paralias 0.5, Festuca juncifolia 0.39, Thrincia saxatilis aggr. 0.37, Pancratium maritimum 0.15, Lagurus ovatus 0.13, Linaria supina 0.12, Achillea maritima 0.11, Carex arenaria 0.1, Crucianella maritima 0.09, Cutandia maritima 0.09, Medicago marina 0.08, Marcus-kochia littorea 0.07, Linaria polygalifolia 0.07, Sonchus bulbosus 0.06, Reichardia gaditana 0.06, Oenothera biennis 0.05, Medicago littoralis 0.05, Sonchus oleraceus 0.05, Matthiola sinuata 0.05, Erigeron canadensis 0.04, Artemisia campestris 0.04, Helichrysum serotinum 0.04, Rumex bucephalophorus 0.04, Hypochaeris radicata 0.04, Andryala integrifolia 0.04, Silene littorea 0.03, Erigeron acris 0.03, Corynephorus canescens 0.03, Euphorbia polygonifolia 0.03, Scrophularia canina 0.02, Pteridium aquilinum 0.02, Catapodium marinum 0.02, Jacobaea vulgaris 0.02, Iberis procumbens 0.02, Euphorbia portlandica 0.02, Blackstonia perfoliata 0.01, Polycarpon tetraphyllum 0.01, Erodium cicutarium aggr. 0.01, Jasione maritima 0.01, Ononis natrix 0.01, Silene scabriflora 0.01, Glaucium flavum 0.01, Vulpia alopecuros 0.01, Polypogon maritimus 0.01, Cyperus capitatus 0.01, Anagallis arvensis 0.01, Bellis perennis 0.01 view more...

Phytosociology

Otantho maritimi-Ammophiletum australis

Relations with other habitat types

These grasslands are taller and denser than those in N131, which they end up replacing after a sufficiently long period without storm disturbances, thus typically occupying a more inland position. The rhizomes and roots of Ammophila contribute to the fixation of sand and, eventually, to the build-up of soils and the installation of N15x.

N133

Regional distribution

Known occurrences and potential area of occupancy of the habitat type in the study region.

N133 Coastal dunes: white dunes (sensu stricto)