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Marine Habitat Classification


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2 results for 'SS.SMp.KSwSS.SlatCho'

   SS.SMp.KSwSS.SlatCho  Saccharina latissima and Chorda filum on sheltered upper infralittoral muddy sediment

Shallow kelp community found on sandy mud and gravelly sandy mud, in sheltered or extremely sheltered conditions, with very weak tidal currents. The community is characterised by a reasonable covering of Saccharina latissima and Chorda filum. Beneath the kelp canopy, Ulva lactuca is often frequent and some filamentous and foliose red algae may be present, along with filamentous brown ectocarpoid algae although in much lower abundance than in the SS.SMp.KSwSS.SlatR biotopes. At the sediment surface ubiquitous fauna such as Asterias rubens, crabs such as Pagurus bernhardus, Carcinus maenas, and the gastropod Steromphala cineraria may be visible and in some areas Sabella pavonina may be present. Given the nature of the sediment it is likely that a wide range of infaunal bivalves and polychaetes are present including Arenicola marina, Mediomastus fragilis and Phyllodoce mucosa. In more tide swept areas with coarser and generally less muddy sediments SS.SMp.KSwSS.SlatCho may be replaced by one of the SS.SMp.KSwSS.SlatR biotopes.

   SS.SMp.KSwSS.SlatGraFS  Saccharina latissima, Gracilaria gracilis and brown seaweeds on full salinity infralittoral sediment

Shallow kelp community found on muddy sand, in moderately exposed or sheltered, fully marine conditions, with weak tidal currents. The community is characterised by a reasonable covering of Saccharina latissima. Frequent Chorda filum may also form part of the canopy although not at the abundance in SS.SMp.KSwSS.SlatCho. Beneath the canopy the community is characterised by the red algae Gracilaria gracilis, and various brown algal species particularly Dictyota dichotoma. Other members of the understory may include a variety of other filamentous and foliose red algae in particular Ceramium nodulosum and the green alga Ulva. The muddy sand substrate supports a variety of faunal species including polychaetes such as Lanice conchilega and gastropods such as Tritia reticulata.
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