Oligochaetes in variable salinity Atlantic littoral mobile sand
A species-poor community of oligochaetes occurring in estuarine conditions where sands and gravel are associated with the lower shore river channel in estuaries. The sediment is relatively coarse and mobile due to strong river flow and subject to variable salinity. There is usually very little mud in the sediment. Oligochaetes, including enchytraeid oligochaetes, constitute the infaunal assemblage. Nemerteans may be present, and nematodes may be frequent.
Situation: This unit occurs in channels of very fast flowing river mouths at the bottom of otherwise sheltered estuarine shores. In this situation, biotopes under the MA6-22 and MA6-22 biotope complexes may be present above the river channel. Unit MA5-211 may be found on the upper shore where driftlines of decomposing seaweed and other debris accumulate.
Source: EUNIS habitat classification
|EUNIS habitat type||code MA52322|
|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
|Classification||Code||Habitat type name||Relationship type|
|EUNIS Habitat Classification 2007 (revised descriptions 2012)||A2.2222||Oligochaetes in variable salinity littoral mobile sand||same|
|Classification||Code||Habitat type name||Relationship type||Comment|
|EUNIS Habitat Classification 200410||A2.2222||Oligochaetes in variable salinity littoral mobile sand||same|
|EUNIS Habitat Classification 200202||A2.121||Oligochaetes in reduced or low salinity gravel or coarse sand shores||same|
|EUNIS Habitat Classification 199910||A2.121||Oligochaetes in reduced or low salinity gravel or coarse sand shores||same|
|MNCR BioMar 97.06 (Britain & Ireland)||LGS.Est.Ol||Oligochaetes in reduced or low salinity gravel or coarse sand shores||same|