EUNIS habitat classification 2017 > M - Marine benthic habitats > MA1 - Littoral rock > MA12 - Atlantic littoral rock > MA121 - Lichens or small green algae on Atlantic supralittoral and littoral fringe rock > MA1212 - Prasiola stipitata on nitrate-enriched supralittoral or littoral fringe rock

Prasiola stipitata on nitrate-enriched supralittoral or littoral fringe rock

Description (English)

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

Quick facts

EUNIS habitat type code MA1212
Relation to Resolution 4 habitat type (used for designation of Emerald sites)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Algae Prasiola stipitata
Species scientific name English common name Species group
Prasiola stipitata Algae

Other classifications

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
For relation to plant communities (syntaxa), see Vegetation types

History

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
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