BIOTIC Species Information for Ulva intestinalis
Click here to view the MarLIN Key Information Review for Ulva intestinalis
Researched byGeorgina Budd & Paolo Pizzola Data supplied byMarLIN
Refereed byThis information is not refereed.
Distribution and Habitat
Distribution in Britain & IrelandCommon all round the coasts of Britain and Ireland.
Global distributionMore or less world-wide in its distribution.
Biogeographic rangeNot researched Depth rangeIntertidal to a few metres sublittorally
MigratoryNon-migratory / Resident   
Distribution Additional InformationNone entered

Substratum preferencesSmall boulders
Cobbles
Bedrock
Large to very large boulders
Muddy sand
Physiographic preferencesStrait / sound
Ria / Voe
Open coast
Enclosed coast / Embayment
Biological zoneSupralittoral
Upper Littoral Fringe
Lower Littoral Fringe
Upper Eulittoral
Mid Eulittoral
Wave exposureModerately Exposed
Sheltered
Very Sheltered
Extremely Sheltered
Ultra Sheltered
Tidal stream strength/Water flowInsufficient information
SalinityFull (30-40 psu)
Variable (18-40 psu)
Low (<18 psu)
Reduced (18-30 psu)
Habitat Preferences Additional InformationUlva intestinalis is remarkably euryhaline, in that it can grow in freshwater. However, there is evidence for the existence of genetic strains adapted to high and low salinities (Reed & Russell, 1979).
Distribution References Dickinson, 1963, Hayward et al., 1996, Fish & Fish, 1996, Amsler & Searles, 1980, Reed & Russel, 1979, JNCC, 1999, Guiry & Nic Dhonncha, 2002,
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