Marine Biodiversity Data Portal - NI
Isle O'Valla, Strangford Lough.
Survey number: 555 Event number: 19860525/21 Date: 1986-05-25 GPS: 54.36000,-5.54900. Depth: 3.5 to 0.2 m. [ View map ]
Site Description: The transect was taken across the intertidal from the grass topped inland immediately north of Sandy Island. The transect runs from the sharp rock ridges around the island over a gully filled with muddy gravel, small stones and boulders, and then across a sandstone ridge outcrop to a boulder filled gully on the lower shore. The intertidal isa Ascophyllum dominated, with some Fucus vesiculosus. There is a good animal diversity under boulders on the lower shore and a good exposure of Laminaria on the sampling date. The supralittoral is composed of sharp rock ridges with a good lichen diversity and some grass on the island mingles with saltmarsh algae, including Vaucheria, Rhizoclonium and blue-green algae. Very poor weather - heavy driving rain and gale force winds - may have affected sampling efficiency.
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Species list (183 species recorded)
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