Hiatella arctica, bryozoans and ascidians on vertical infralittoral soft rock
|Within Vocab||Marine Habitat Classification for Britain and Ireland Version 97.06|
|Definition||Vertical faces of soft rock (limestone, chalk, sandstone) bored by Hiatella arctica. Bored holes are occupied by brittlestars such as Ophiopholis aculeata and Ophiactis balli and small crustaceans such as Pisidia longicornis and Porcellana platycheles. Open rock surfaces are often colonised by tufted bryozoans Bugula spp. and Scrupocellaria spp., sponges, hydroids and ascidians including Polycarpa scuba, P. pomaria and Dendrodoa grossularia. This biotope is similar to IR.AlcByH, but this biotope additionally has rock-boring bivalves.|
|Has Current Version||1|
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