Fucus ceranoides on reduced salinity eulittoral rock
|Within Vocab||Marine Habitat Classification for Britain and Ireland Version 97.06|
|Definition||Bedrock and stable boulders in the eulittoral zone that are subject to reduced salinity may be characterised by the horned wrack Fucus ceranoides. As this fucoid is more tolerant of reduced salinity than the other fucoids, F. ceranoides tends to replace Fucus spiralis, Fucus vesiculosus and Ascophyllum nodosum towards the upper reaches of estuaries and sealochs. This biotope may, however, still contain other fucoids, although Fucus ceranoides always dominates. Species richness is typically low in this biotope. Since areas of bedrock and stable boulder are generally scarce within estuarine systems, this community is more commonly encountered on stable mixed substrata (see FcerX).|
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