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,
A5.528 - Niveau 5 : Algues vertes filamenteuses sur roche ou sédiment hétérogène infralittoral en milieu à faible salinité
Description
Shallow muddy sediments, often with boulders, cobbles and pebbles around the edges of lagoons, or other areas that are exposed to wide salinity variations are unsuitable for colonisation by many species. Such areas may be colonised by a dense blanket of ephemeral green algae such as Enteromorpha spp., Chaetomorpha linum, Cladophora liniformis or Rhizoclonium riparium. This biotope may also contain some red seaweeds, such as Furcellaria lumbricalis, but always at low abundance (compare with A3.343). Amongst the filamentous green algae, grazing molluscs and solitary ascidians may be present. Infauna may typically include Corophium volutator, Heterochaeta costata, Tubificoides benedeni and other taxa suited for low/variable salinity environments.
Taxons (Liens actifs si espèces présentes)
Beggiatoa sp. ( Esp. caract. )
Chaetomorpha linum (O.F.Müller) Kütz., 1849 ( Esp. caract. )
Cladophora Kütz., 1843 ( Esp. caract. )
Derbesia marina (Lyngb.) Solier, 1846 ( Esp. caract. )
Enteromorpha intestinalis (L.) Nees, 1820 ( Esp. caract. )
Enteromorpha Link, 1820 ( Esp. caract. )
Mysidae sp. ( Esp. caract. )
Rhizoclonium riparium (Roth) Harv., 1849 ( Esp. caract. )
Analyse Ecologie du milieu (En fonction des espèces présentes)