Ulothrix flacca and Urospora spp. on freshwater-influenced vertical littoral fringe soft rock

English name: Ulothrix flacca and Urospora spp. on freshwater-influenced vertical littoral fringe soft rock

Description (English)

An assemblage of the small un-branched filamentous green seaweeds Ulothrix flacca, Urospora penicilliformis and Urospora wormskioldii at High Water Spring Tide level on steep and vertical rock often influenced by freshwater. The community is also present in areas with freshwater seepage. It is visually recognised as a closely adherent, often shiny, green mat of filamentous growth. Associated species include the green seaweeds Blidingia minima and Enteromorpha prolifera, the barnacle Semibalanus balanoides and the limpet Patella vulgata, but these species are not common. Although this biotope does occur on rock other than chalk, this description has been derived from chalk coast sites. More information is needed to improve this description.
Situation: On chalk coasts this community can include Enteromorpha spp. and the transition from B3.115 to A1.451 is often indistinct and a mixed zone of B3.115 and A1.451 can occur.
Temporal variation: This biotope is more easily identifiable from autumn to spring as both Urospora spp. and Bangia atropurpurea may dry out and disappear during the summer. In late winter the red seaweed B. atropurpurea may be predominant and the community then appears as shiny blackish mats of filamentous growth.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code B3.115

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Bangia atropurpurea
Algae Blidingia minima
Algae Enteromorpha prolifera
Algae Ulothrix flacca
Algae Urospora penicilliformis
Algae Urospora wormskioldii
Invertebrates Patella vulgata
Invertebrates Semibalanus balanoides
Species scientific name English common name Species group
Bangia atropurpurea Algae
Blidingia minima Algae
Enteromorpha prolifera Algae
Ulothrix flacca Algae
Urospora penicilliformis Algae
Urospora wormskioldii Algae
Patella vulgata Invertebrates
Semibalanus balanoides Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 LR.FLR.Lic.UloUro <I>Ulothrix flacca</I> and <I>Urospora</I> spp. on freshwater-influenced vertical littoral fringe soft rock source
CORINE Land Cover 3.3.2. Bare rock n/a
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 B3.115 Ulothrix flacca and Urospora spp. on freshwater-influenced vertical littoral fringe soft rock same
EUNIS Habitat Classification 200308 B3.116 Ulothrix flacca and Urospora spp. on freshwater-influenced vertical littoral fringe soft rock same
EUNIS Habitat Classification 200202 B3.116 Ulothrix flacca and Urospora spp. on freshwater-influenced vertical littoral fringe soft rock same
EUNIS Habitat Classification 199910 B3.116 Ulothrix flacca and Urospora spp. on freshwater-influenced vertical littoral fringe soft rock same
MNCR BioMar 97.06 (Britain & Ireland) LR.L.UloUro Ulothrix flacca and Urospora spp. on freshwater-influenced vertical littoral fringe soft rock same
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