Description of biotope or habitat type
Blidingia spp. on vertical littoral fringe soft rock
Habitat (physical) description
|Salinity||Full (30-35 ppt)|
|Wave exposure||Moderately exposed|
|Other Features||Soft rock (chalk); vertical faces|
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- Records used to define the biotope (core records)
- Other records assigned to this biotope, marked as 'certain'
- Other records assigned to this biotope, marked as 'uncertain'
Point data based on records in the UK Marine Recorder Snapshot.
Vertical soft rock in the littoral fringe may be characterised by a band of the green seaweeds Blidingia minima and Blidingia marginata. Unbranched filamentous green seaweeds, including Ulothrix flacca and Urospora wormskioldii, are found amongst the Blidingia spp. The siphonous Xanthophyceae Vaucheria spp. can also occur in high abundance in this biotope, where they can form dense mats. During low tide terrestrial fauna such as red mites, insects and centipedes migrate into this zone. More information is needed to improve this description.
Bli is found below the Verrucaria maura zone (Ver.Ver) and above a band of the similar looking green algae Enteromorpha spp. (Ent and EntPor), where these occur in habitats not influenced by freshwater.