You are here:
Eionet
Data Dictionary
Vocabulary

Concept: Ephemeral green or red seaweeds (freshwater or sand-influenced) on non-mobile substrata in the eunishabitats vocabulary

Concept URI http://eunis.eea.europa.eu/eunishabitats/A1.45
Preferred label Ephemeral green or red seaweeds (freshwater or sand-influenced) on non-mobile substrata
Definition Ephemeral seaweeds on disturbed littoral rock in the lower to upper shore. Dominant green seaweeds include [Enteromorpha intestinalis], [Ulva lactuca] and the red seaweeds [Rhodothamniella floridula] and [Porphyra purpurea]. Winkles such as [Littorina littorea] and [Littorina saxatilis], the limpet [Patella vulgata] and the barnacles [Semibalanus balanoides] can occur, though usually in low abundance. The crab [Carcinus maenas] can be found where boulders are present, while the barnacle [Elminius modestus] is usually present on sites subject to variable salinity. On moderately exposed shores, the biotope is [Enteromorpha] spp. on freshwater-influenced or unstable upper shore rock (A1.451) or [P. purpurea] and/or [Enteromorpha] spp. on sand-scoured mid to lower eulittoral rock (A1.452). These are biotopes with a low species diversity and the relatively high number of species in the characterising species list are due to a variation in the species composition from site to site, not to high species richness on individual sites. Situation: This habitat type occurs the splash zone, sometimes on cliff faces, and throughout the main intertidal zone. Note: Connor et al (2004) classify this habitat type together with A2.43 and A2.82 as LR.ELR.Eph.
Notation A1.45
Status Valid
Status Modified 2014-01-31
Accepted Date 2014-01-31
Not Accepted Date
Has broader
Has narrower
Has exact match