BIOTIC

BIOTIC Species Information for Amphiura filiformis
All Taxonomy Biology Distribution Reproduction

Researched by	Lizzie Tyler	Data supplied by	University of Sheffield
Refereed by	This information is not refereed.
Distribution and Habitat
Distribution in Britain & Ireland	Most British and Irish coasts although records have not been found for the south east of England.
Global distribution	Western Norway to the Mediterranean.
Biogeographic range	Not researched	Depth range	5 - 1200 m
Migratory	Non-migratory / Resident
Distribution Additional Information	Possible density dependent migration where migration occurs on or in the sediment. Burrowing through the sediment takes longer but the risk of predation is decreased.

Substratum preferences	Muddy sand Sandy mud	Physiographic preferences	Offshore seabed Sealoch Enclosed coast / Embayment
Biological zone	Sublittoral Fringe Upper Infralittoral Lower Infralittoral Upper Circalittoral Lower Circalittoral	Wave exposure	Sheltered Very Sheltered Extremely Sheltered
Tidal stream strength/Water flow	Moderately Strong (1-3 kn) Weak (<1 kn) Very Weak (negligible)	Salinity	Full (30-40 psu)
Habitat Preferences Additional Information
Distribution References	Hayward & Ryland, 1995b, Hayward et al., 1996, Hayward & Ryland, 1990, Julie Bremner, unpub data, Gerdes, 1977, Mortensen, 1927,