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Concept

Flustra foliacea and other hydroid/bryozoan turf species on slightly scoured circalittoral rock or mixed substrata

URI http://vocab.nerc.ac.uk/collection/M24/current/CRMCRBYHFLU/
Within Vocab Marine Habitat Classification for Britain and Ireland Version 97.06
Alternative Labels CR.MCR.ByH.Flu
Definition A widespread biotope which has been split into several related entities. The biotope is characterised by silt- and scour-tolerant species which occur in varying proportions around the country, but Flustra foliacea tends to dominate. This biotope is characteristic of silty rocky habitats, tending to be moderately exposed to wave action and with a moderate tidal flow which create the slight scour conditions (compared to silted rocky habitats in sheltered conditions). The species associated with and therefore characterising the different Flustra biotopes vary from region to region, ranging from the relatively low species-rich Flu.Flu found on North Sea coasts to the similar but far richer biotopes with sponges and hydroids on the west of Britain and Irish Sea coasts (Flu.HByS). There are also several other related biotopes: these include the Urticina (Urt.Urt) and Ciocalypta (Urt.Cio) biotopes which occur at rock-sediment interfaces; ascidian-dominated biotopes with Flustra (StoPaur) and several other biotopes characterised by other slight scour-tolerant or turbid-water species such as Sabellaria spinulosa which include Flustra (Sspi and MolPol.Sab) and Alcyonidium diaphanum (SNemAdia). Only use this biotope if records do not fit into other categories.
Date 2019-11-26T11:41:44
Identifier SDN:M24::CRMCRBYHFLU
Note accepted
Has Current Version 1
version 1

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