BIOTIC

BIOTIC Species Information for Fucus ceranoides
All Taxonomy Biology Distribution Reproduction

Researched by	Nicola White	Data supplied by	MarLIN
Refereed by	Dr Graham Scott
Distribution and Habitat
Distribution in Britain & Ireland	All coasts of Britain and Ireland
Global distribution	Spitsbergen, Iceland, Norway, Heligoland, Netherlands, Ireland, Britain, N. France, Portugal and Azores.
Biogeographic range	Not researched	Depth range	Not relevant
Migratory	Non-migratory / Resident
Distribution Additional Information	The species is commonly found in the upper reaches of estuaries. It appears to be physiologically adapted to living in reduced salinity and exhibits its maximum growth rate at 11 psu. It is thought to be absent from fully saline sites due to an inability to compete with the faster growing fucoids, such as %Fucus vesiculosus% and a physiological intolerance of fully saline conditions. In areas of estuaries where salinity varies between 11 and 25 psu, Fucus ceranoides and %Fucus vesiculosus% can be found living together.

Substratum preferences	Bedrock Large to very large boulders Small boulders Cobbles Pebbles Gravel / shingle	Physiographic preferences	Estuary Strait / sound Sealoch Ria / Voe Open coast
Biological zone	Upper Eulittoral Mid Eulittoral	Wave exposure	Sheltered Very Sheltered
Tidal stream strength/Water flow	Strong (3-6 kn) Moderately Strong (1-3 kn) Weak (<1 kn) Very Weak (negligible)	Salinity	Reduced (18-30 psu) Low (<18 psu)
Habitat Preferences Additional Information
Distribution References	Suryono & Hardy, 1997, Lein, 1984, JNCC, 1999, Norton, 1985, Hardy & Guiry, 2003,