BIOTIC Species Information for Phymatolithon calcareum
Researched byAngus Jackson Data supplied byMarLIN
Refereed byDr Christine Maggs
Distribution and Habitat
Distribution in Britain & IrelandRecorded around the Shetland Orkney Islands and along the east coast of Scotland, south coast of England with isolated records at Bideford Bay, Pembrokeshire and Caernarfon Bay. Abundant around the west coasts of Ireland and Scotland
Global distributionFrom Norway down to northern Spain. Includes the western Baltic and the Mediterranean
Biogeographic rangeNot researched Depth range1-30m
MigratoryNot relevant   
Distribution Additional InformationMost frequent at depths between 1-10 m. May be found deeper in clear waters, e.g. found at depths of up to 30 m in outer Galway Bay.
%Phymatolithon calcareum% has been reported recently from 13-20m off Swange to Old Harry and off Bembridge, the Isle of Wight (Collins pers. comm.; Collins et al., 1990).

Substratum preferencesPebbles
Gravel / shingle
Muddy gravel
Coarse clean sand
Fine clean sand
Sandy mud
Muddy sand
Physiographic preferencesOpen coast
Strait / sound
Ria / Voe
Biological zoneSublittoral Fringe
Upper Infralittoral
Lower Infralittoral
Wave exposureModerately Exposed
Tidal stream strength/Water flowStrong (3-6 kn)
Moderately Strong (1-3 kn)
SalinityFull (30-40 psu)
Habitat Preferences Additional Information
Distribution References Campbell, 1994, Irvine & Chamberlain, 1994, Donnan & Davies, 1996, Birkett et al., 1998(a), Grall & Glémarec, 1997, Hall-Spencer & Moore, 2000a, Veale et al., 1999, Collins et al., 1990, Hardy & Guiry, 2003, Hardy & Guiry, 2003,
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