Marine Biodiversity Data Portal - NI
Reagh Island, Strangford Lough.
Survey number: 555 Event number: 19860607/22 Date: 1986-06-07 GPS: 54.51500,-5.63200. Depth: 3.5 to 0.2 m. [ View map ]
Site Description: The transect site lies on the south eastern side of Reagh Island. It runs across an upper shore of scattered Ascophyllum and Ulva (originally recorded as Enteromorpha) dominated boulders on pebbles and sandy, muddy gravel. This area is relatively narrow. The wide sedimentary lower shore is composed of muddy sand close inshore, which becomes more and more muddy towards low water, where there are areas of glutinous mud between firmer areas of sandy mud. Scattered Lanice tubes exist on the lower shore. There are about 20 Arenicola casts per sq. metre throughout the intertidal, and large numbers of cockles at all levels. Visually obvious infauna on the sampling date included Mya, Macoma and Nephtys. Patchy algae grew on small stones in the sediment, including brown filaments, Ulva (originally recorded as Enteromorpha), Asperococcus, Chorda, Chordaria, while fucoids, barnacles and limpets lived on isolated boulders embedded in the sandy mud. Zostera grew on the sediment, and was at its greatest abundance between levels 3 and 4. The supralittoral is composed of small stones and boulders lying in gravelly coarse sand. There was standing water on the surface at all 4 bottom levels.
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Species list (53 species recorded)
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