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Biotopes & milieux

Biotope - Typologie Européenne EUNIS

A5.52 - Niveau 4 : Biocénoses à laminaires et algues sur sédiment subtidal
Description
Shallow sublittoral sediments which support seaweed communities, typically including the kelp Laminaria saccharina, the bootlace weed Chorda filum and various red and brown seaweeds, particularly filamentous types. The generally sheltered nature of these habitats enables the seaweeds to grow on shells and small stones which lie on the sediment surface; some communities develop as loose-lying mats on the sediment surface.
Taxons (Liens actifs si espèces présentes)
Bonnemaisonia asparagoides (Woodward) C.Agardh, 1822, Brongniartella byssoides (Goodenough & Woodward) F.Schmitz, 1893, Corallinaceae Lamouroux, 1812, Delesseria sanguinea (Hudson) J.V.Lamour., 1813, Gracilaria gracilis (Stackh.) M.Steentoft, L.M.Irvine & W.F.Farnham, 1995, Halarachnion ligulatum (Woodward) Kütz., 1843, Lomentaria clavellosa (Lightf. ex Turner) Gaillon, 1828, Nematoda sp., Nemertea sp., Phycodrys rubens (L.) Batters, 1902, Phyllophora crispa (Hudson) P.S.Dixon, 1964, Plocamium cartilagineum (L.) P.S.Dixon, 1967, Polyides rotunda (Hudson) Gaillon, 1828, Polysiphonia elongata (Hudson) Sprengel, 1827, Pterothamnion plumula (J.Ellis) Nägeli, 1855, Rhodophyllis divaricata (Stackh.) Papenf., 1950, Terebellidae sp., Trailliella intricata Batters, 1896, Ulva L., 1753,
A5.52F - Niveau 5 : Association à Lamprothamnium papulosum
Description
This association is characterised by the foxtail stonewort (charophyte) Lamprothamnium papulosum. Lamprothamnium papulosum is a rare, brackish water stonewort growing to a height of up to 40 cm with regular whorls of slender cylindrical branches each with several spine-like bracts which give the plant a furry appearance. The foxtail stonewort has a sporadic distribution around the coast of Europe from Norway to the Iberian Peninsula. In the Mediterranean it extends eastwards to Tunisia and Sicily with isolated records from Cyprus and the Black Sea.
Taxons (Liens actifs si espèces présentes)
Lamprothamnium papulosum (K.Wallroth) J.Groves, 1916 ( Esp. caract. )
Analyse Ecologie du milieu (En fonction des espèces présentes)