Foliose seaweeds and coralline crusts in surge gully entrances
|Within Vocab||Marine Habitat Classification for Britain and Ireland Version 97.06|
|Definition||This biotope is often found on steep wave-surged entrances to gullies and caves and on mobile boulders in the entrance to caves and gullies. The rock is abraded by the movement of the boulders and cobbles in heavy surge and is dominated by dense foliose seaweeds that grow rapidly in the calmer summer months. Beneath the foliose seaweeds the rock surface is covered with coralline crusts, which are longer-lived, and tolerant of abrasion. The flora of this biotope is relatively varied, depending upon the amount of light and degree of abrasion or rock mobility with red seaweeds such as Plocamium cartilagineum, Kallymenia reniformis and Phyllophora crispa common. The brown seaweed Dictyota dichotoma also occurs in these conditions, since it is tolerant of some sand scour. During the summer months small fast-growing kelp plants may also arise in this biotope, though the mobility of the substratum prevents the kelp from forming a kelp forest. Dense swathes of very young kelp plants are, however, not uncommon and should be included in this biotope. This biotope may appear similar to EIR.LsacSac, though EIR.LsacSac, often occurs further away from the cave / gully entrance on larger boulders. As such, the greater (relative) stability of the boulders allows the opportunistic kelps to survive long enough to form a forest.|
|Has Current Version||1|
Other formats for this page:RDF/XML Turtle JSON-LD
Other views of this page:
Alternate Profiles ?Different Media Types (HTML, text, RDF, JSON etc.) and different information model views, profiles, are available for this resource.
NVS html view ? Default NVS html view.