Nephtys cirrosa-dominated Atlantic littoral fine sand
This biotope occurs mainly on the mid and lower shore on moderately wave-exposed and sheltered coasts, with medium to fine clean sand which remains damp throughout the tidal cycle and contains little organic matter. The sediment is not usually well sorted and may contain a fraction of coarse sand. It is often rippled and typically lacks an anoxic sub-surface layer. The polychaete infauna is dominated by Nephtys cirrosa, Magelona mirabilis, Spio martinensis, Spiophanes bombyx and Paraonis fulgens. The presence of polychaetes may be seen as coloured burrows running down from the surface of the sediment. Nemertean worms may be present. The amphipods Pontocrates spp. and Bathyporeia spp., as well as Cumopsis goodsiri and the shrimp Crangon crangon are typically present. The bivalve Angulus tenuis is scarce or absent.
Situation: This unit may be present higher up on the shore than unit MA5-2412, or lower down than MA5-2332or MA5-2321.
Temporal variation: The infaunal community of this biotope may change seasonally, as increased storminess during winter months may reduce sediment stability and the ability of some species to survive. Some species, such as the shrimp C. crangon avoid these conditions by seasonal migration to deeper water (Moore, 1991).
Source: EUNIS habitat classification
|EUNIS habitat type||code MA52413|
|Relation to||Resolution 4 habitat type (used for designation of Emerald sites)|
Relation to other habitat types mentioned in legal instruments
Relation to vegetation types (syntaxa)Not available
Species mentioned in habitat description
|Species scientific name||English common name||Species group|
|Classification||Code||Habitat type name||Relationship type|
|EUNIS Habitat Classification 2007 (revised descriptions 2012)||A2.2313||Nephtys cirrosa-dominated littoral fine sand||same|
|Classification||Code||Habitat type name||Relationship type||Comment|
|EUNIS Habitat Classification 200410||A2.2313||Nephtys cirrosa-dominated littoral fine sand||same|