Liste des biotopes et milieux floristiques.

Biotope - Typologie Européenne EUNIS

A5.52 - Niveau 4 : Biocénoses à laminaires et algues sur sédiment subtidal
Description
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,
A5.521 - Niveau 5 : Saccharina latissima (anciennement Laminaria saccharina) et algues rouges sur sédiments infralittoraux
Description
On infralittoral mixed muddy substrata communities characterised by the kelp Laminaria saccharina and mixed filamentous and foliose red algae can be found. This biotope contains a number of sub-biotopes distinguished by the degree of either wave or tidal exposure. In moderately strong tidal streams in exposed areas Laminaria is sparse and dense stands of red seaweeds are found attached to the boulders and cobbles that make up a large proportion of the sediment (A5.5211). As the degree of wave and/or tidal exposure decreases there is a change in community structure, with the density of Laminaria and the diversity of red algal species increasing (A5.5212). As the environment becomes more stable a number of brown algal species are able to inhabit this environment and a rich infauna develops (A5.5213). In the most sheltered examples of this biotope a diverse muddy sediment infauna can be found and the 'Trailliella' phase of Bonnemaisonia hamifera may develop (A5.5214).
Taxons (Liens actifs si espèces présentes)
Bonnemaisonia asparagoides (Woodward) C.Agardh, 1822 ( Esp. caract. )
Brongniartella byssoides (Goodenough & Woodward) F.Schmitz, 1893 ( Esp. caract. )
Corallinaceae Lamouroux, 1812 ( Esp. caract. )
Delesseria sanguinea (Hudson) J.V.Lamour., 1813 ( Esp. caract. )
Halarachnion ligulatum (Woodward) Kütz., 1843 ( Esp. caract. )
Lomentaria clavellosa (Lightf. ex Turner) Gaillon, 1828 ( Esp. caract. )
Phycodrys rubens (L.) Batters, 1902 ( Esp. caract. )
Plocamium cartilagineum (L.) P.S.Dixon, 1967 ( Esp. caract. )
Polysiphonia elongata (Hudson) Sprengel, 1827 ( Esp. caract. )
Pterothamnion plumula (J.Ellis) Nägeli, 1855 ( Esp. caract. )
Rhodophyllis divaricata (Stackh.) Papenf., 1950 ( Esp. caract. )
Terebellidae sp. ( Esp. caract. )
Ulva L., 1753 ( Esp. caract. )
Analyse Ecologie du milieu (En fonction des espèces présentes)