Marine Biodiversity Data Portal - NI
Granagh Bay (sediment), Strangford Lough.
Survey number: 555 Event number: 19860606/21 Date: 1986-06-06 GPS: 54.36000,-5.53400. Depth: 3.5 to 0.2 m. [ View map ]
Site Description: The shore is a highly diverse complex of sediments between rock outcrops and boulders. The transect site was taken along a relatively clear tract of sediment which transgressed several sediment types down the shore. The shore is very sheltered and appears important for both birds and as a seal haul out. The shore is backed by farmland, with a shingle upper shore. generally the transect was taken down an area between outcrops and has many Ascophyllum covered boulders. The lower shore was mud and very muddy sand; the middle shore muddy sand; and upper shore fine sand with gravel beneath, but quite near the surface. The surface of the sediment was covered with green algae and brown filaments which bound into the sand. The latter became dominant on the lower shore. The upper shore had a dominance of Ulva (originally recorded as Enteromorpha). Many Arenicola occurred throughout the transect which formed mounds, with water collecting in the troughs between. Lanice were common towards the lower shore.
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Species list (64 species recorded)
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