Description of biotope or habitat type
Cordylophora caspia and Electra crustulenta on reduced salinity infralittoral rock
Physical habitat description
|Salinity||Reduced (18-30ppt), Low (<18ppt)|
|Wave exposure||Very sheltered, Extremely sheltered|
|Tidal streams||Strong (3-6 kn), Moderately strong (1-3 kn)|
|Depth Band||0-5 m|
Download comparative physical and biological data. The comparative tables enable a rapid comparison of the species composition and principal physical characteristics between a given set of biotopes.
- 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'
- Predicted extent of the level 3 (for sublittoral rock & deep sea) or 4 (for sublittoral sediment) habitat
Shallow sublittoral rock in the upper estuary of one of the south-west inlets (Tamar) with very high turbidity and therefore no seaweeds. The brackish-water hydroid Cordylophora caspia and small colonies of the encrusting bryozoan Electra crustulenta and a few Balanus crenatus characterise this biotope. More information required to validate this description.
Insufficient information to describe neighbouring biotopes.
|Taxon||Relative importance of taxon for defining this community (%)||Typical abundance - SACFOR scale||% of core records where taxon was recorded|
|Cordylophora caspia||98||Occasional||81-100 %|
|Balanus crenatus||1||Rare||41-60 %|
|Electra crustulenta||1||Frequent||41-60 %|
Similar biotopes or habitat types
Not applicable or unknown.
Classification history of this biotope or habitat type
|96.7||SCR.HarCon in part|