N2-1 - Plages de galets de l'Atlantique, de la Baltique et de l'Arctique (EUNIS 2022)

N2-1 - Plages de galets de l'Atlantique, de la Baltique et de l'Arctique

Atlantic, Baltic and Arctic coastal shingle beach

N2-2 - Plages de galets de la Méditerranée et de la mer Noire

Classification des habitats EUNIS 2022

Descriptif de l'habitat

These deposits of shingle are most typical of highly dynamic beaches along the Atlantic, Arctic and Baltic coasts, with concentrations along the English Channel. Often mobile and largely bare, they provide an inhospitable environment colonised only in more stable situations, with some deposition of finer material and drift detritus, by a distinctive suite of salt-tolerant and nitrophilous perennial plants. They also provide a habitat suitable for some nesting waders and seabirds and a variety of distinctive invertebrates. Locally, in southern England and the Baltic, larger apposition beaches are more extensively colonised by vegetation.

Espèces diagnostiques

Honckenya peploides, Beta vulgaris subsp. maritima, Lathyrus japonicus, Atriplex praecox, Atriplex prostrata, Tripleurospermum maritimum aggr., Atriplex littoralis, Atriplex glabriuscula, Polygonum raii, Rumex crispus

Espèces constantes

Atriplex prostrata, Tripleurospermum maritimum aggr., Honckenya peploides, Rumex crispus, Beta vulgaris subsp. maritima, Argentina anserina, Festuca rubra aggr., Sonchus arvensis, Elytrigia repens aggr., Elytrigia juncea, Atriplex littoralis, Lathyrus japonicus, Cakile maritima, Leymus arenarius, Crambe maritima, Cirsium arvense, Agrostis stolonifera

Espèces dominantes

Honckenya peploides, Tripleurospermum maritimum aggr., Atriplex prostrata, Argentina anserina, Lathyrus japonicus, Beta vulgaris subsp. maritima

Bibliographie

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)