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Concept: [Hediste diversicolor] and oligochaetes in littoral mud in the eunishabitats vocabulary

Concept URI http://eunis.eea.europa.eu/eunishabitats/A2.3223
Preferred label [Hediste diversicolor] and oligochaetes in littoral mud
Definition A species-poor community found in mud or slightly sandy mud in low salinity conditions, typically at the head of estuaries. The infauna is dominated by the ragworm [Hediste diversicolor] which is typically superabundant. Oligochaetes, including tubificids and [Heterochaeta costata], can be abundant, as well as spionids. The peppery furrow shell [Scrobicularia plana] may be present in low abundances. The mud is often very soft and fluid, with a 'wet' surface appearance, or it may be compacted and form steep banks in the upper parts of macro-tidal estuaries and along saltmarsh creeks. Situation: There are three oligochaete dominated upper estuarine mud biotopes. Tben is the most extreme upper estuarine biotope, occurring at the head of estuaries where there is a very strong freshwater influence. Further towards the mid estuary, this biotope may occur at the top of the shore, with Hed.Ol further down. NhomStr occurs furthest towards the mid estuary, or on the lower shore with Hed.Ol and Tben higher up. Temporal variation: [Enteromorpha] spp. or [Ulva lactuca] may form mats on the surface of the sediment during the summer months, particularly in areas of freshwater influence and/or where there is nutrient enrichment.
Notation A2.3223
Status Valid
Status Modified 2014-01-31
Accepted Date 2014-01-31
Not Accepted Date
Has broader
Has exact match