Rhodothamniella floridula on sand-scoured lower eulittoral rock
|Within Vocab||Marine Habitat Classification for Britain and Ireland Version 97.06|
|Definition||Lower eulittoral and sublittoral fringe sand-scoured bedrock and boulders are often characterised by canopy algae (usually Fucus serratus), beneath which a mat of the sand-binding red alga Rhodothamniella floridula occurs. These mats can also form distinct areas without F. serratus. The small hummocks of R. floridula also contain other small red and brown algae and species of worm and amphipod may burrow into the Rhodothamniella mat. Other sand-tolerant algae, such as Polyides rotundus, Furcellaria lumbricalis, Gracilaria verrucosa and Cladostephus spongiosus, may be present. Ephemeral algae such as Enteromorpha spp., Ulva spp. and Porphyra spp. may occur. Where sand scour is more severe, fucoids and Rhodothamniella may be rare or absent and these ephemeral algae dominate the substratum (EntPor).|
|Has Current Version||1|
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