Prasiola stipitata on nitrate-enriched supralittoral or littoral fringe rock
Exposed to moderately exposed bedrock and large boulders in the supralittoral and littoral fringe that receives nitrate enrichment from nearby roosting sea birds and is characterised by a band or patches of the ephemeral tufty green seaweed Prasiola stipitata or Prasiola spp. This typically grows over the black lichen Verrucaria maura in the littoral fringe or yellow and grey lichens in the supralittoral zone. In damp pits and crevices, species such as the winkle Littorina saxatilis, amphipods and halacarid mites are occasionally found. MA1-212 often covers a smaller area than 5m x 5m and care should be taken to notice/record this biotope. The biotope can be associated with artificial substrata such as septic tanks, and in supralittoral areas influenced by sewage seeps or agricultural run-off.
Situation: This biotope is found at the top of rocky shores in the splash zone below colonies of nesting or roosting birds growing. MA1-212 may also be found at the entrances to and on the ceilings of littoral caves or in patches on large boulders, where birds may be roosting. It can be found in the MA1-211 or MA1-2132 zones.
Temporal variation: P. stipitata reaches its maximum abundance during the winter months. It generally dies out during the summer in southern Britain, when the biotope reverts to either MA1-211 or MA1-2132. In the cooler northern areas it may be present all year round.
Source: EUNIS habitat classification
|EUNIS habitat type||code MA1212|
|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)||B3.112||Prasiola stipitata on nitrate-enriched supralittoral or littoral fringe rock||same|
|Classification||Code||Habitat type name||Relationship type||Comment|
|EUNIS Habitat Classification 200410||B3.112||Prasiola stipitata on nitrate-enriched supralittoral or littoral fringe rock||same|
|EUNIS Habitat Classification 200308||B3.112||Prasiola stipitata on nitrate-enriched supralittoral or littoral fringe rock||same|
|EUNIS Habitat Classification 200202||B3.112||Prasiola stipitata on nitrate-enriched supralittoral or littoral fringe rock||same|
|EUNIS Habitat Classification 199910||B3.112||Prasiola stipitata on nitrate-enriched supralittoral or littoral fringe rock||same|
|MNCR BioMar 97.06 (Britain & Ireland)||LR.L.Pra||Prasiola stipitata on nitrate-enriched supralittoral or littoral fringe rock||same|