EUNIS habitat classification 2012 amended 2019 > A - Marine habitats > A1 - Littoral rock and other hard substrata > A1.4 - Features of littoral rock > A1.44 - Communities of littoral caves and overhangs > A1.443 - Audouinella purpurea and Pilinia maritima crusts on upper and mid-shore cave walls and ceilings

Audouinella purpurea and Pilinia maritima crusts on upper and mid-shore cave walls and ceilings

English name: Audouinella purpurea and Pilinia maritima crusts on upper and mid-shore cave walls and ceilings

Description (English)

Golden brown velvety growths of the brown algae Pilinia maritima occurring in mats with the red alga Audouinella purpurea forming on cave walls and upper littoral levels of cliffs. Fauna is sparse and limited to occasional individuals of the winkle Littorina saxatilis and spirorbid polychaetes. This assemblage is thought to be is widespread throughout Britain, although there are currently few records available. More information are needed to validate this description, which is based on information from the Thanet intertidal survey (Tittley & Spurrier 2001).
Situation: This biotope is found at the entrances and the inner reaches of caves between a band of unit A1.444 and the A1.442 zone above.
Temporal variation: Some variation in the species composition of the individual caves must be expected depending on local conditions.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A1.443
Bern Convention Included in a Resolution 4 habitat type at a higher level (A1.44)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Invertebrates Littorina saxatilis
Species scientific name English common name Species group
Littorina saxatilis Invertebrates

Other classifications

Classification Code Habitat type name Relationship type
Marine Habitat Classification Britain/Ireland 0405 LR.FLR.CvOv.AudPil <I>Audouinella purpurea</I> and <I>Pilinia maritima</I> crusts on upper and mid-shore cave walls and ceilings source
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A1.443 Audouinella purpurea and Pilinia maritima crusts on upper and mid-shore cave walls and ceilings same
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