BIOTIC Species Information for Rhodothamniella floridula
Researched byKaren Riley Data supplied byMarLIN
Refereed byThis information is not refereed.
Distribution and Habitat
Distribution in Britain & IrelandRhodothamniella floridula occurs on the coast of Scotland, the north east, south and south west coasts of England and in Wales and Northern Ireland.
Global distributionOccurs in northwest Europe
Biogeographic rangeNot researched Depth rangeLittoral to 5m
MigratoryNon-migratory / Resident   
Distribution Additional InformationRhodothamniella floridula has been found on substrata other than sandy rock. For example, in St. Andrews Bay, Rhodothamniella floridula (as Rhodochorton spp.) occurred in tufts on %Halidrys siliquosa% (a brown seaweed) and in pools where %Fabricia sabella% (a polychaete worm) was common (Laverack & Blackler, 1974). In Co. Kerry, Ireland Rhodothamniella floridula (as Audouinella floridula) was also found growing on peat masses, where it binds the peat and sand together (Murphy, 1981).

Substratum preferencesBedrock
Large to very large boulders
Small boulders
Physiographic preferencesOpen coast
Enclosed coast / Embayment
Strait / sound
Biological zoneUpper Littoral Fringe
Lower Littoral Fringe
Upper Eulittoral
Wave exposureModerately Exposed
Very Sheltered
Tidal stream strength/Water flowModerately Strong (1-3 kn)
Weak (<1 kn)
SalinityFull (30-40 psu)
Habitat Preferences Additional Information
Distribution References Murphy, 1981, Hayward et al., 1996, Connor et al., 1997(b), Dickinson, 1963, Dixon & Irvine, 1977, Laverack & Blackler, 1974, Hardy & Guiry, 2003,
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