Marine Biodiversity Data Portal - NI

Glassdrumman Port, SE Coast.

[Site list for year 1985]

Survey number: 555 Event number: 19850517/21 Date: 1985-05-17 GPS: 54.13700,-5.89100. Depth: 3.5 to 0.2 m. [ View map ]

Site Description: The location is a boulder dominated coastal area which has intermittent shallow ridges in the upper shore. The backing is shingle and grass slopes with occasional valley. Sabellaria mats occur in the mid shore and towards the lower shore. The boulders occur on top of pebbles, stones and coarse sand in which a rich fauna lives. The profile of the site has a shingle upper shore with rock ridges below this which have a few boulders between them. These ridges are shallow inverted V shapes formed of slate type rock. Many crevices and long thin rock pools occur. The middle and lower shore has large medium and small boulders, the medium being most numerous. Towards the middle of the boulder area an extensive cover of sand sculptured by Sabellaria occurs on top and between boulders. This provides an extensive habitat for other animals. The lower shore has larger boulders on top of sand and stones, but is free of the sand of Sabellaria. Rock pools occur in the middle and lower shore between the boulders and in depressions in the sand. These tend to have sand, stones, pebbles and small boulders in the bottom. The shore is used for crab fishing/collecting. No Laminaria zone occurred due to sandy bottom below Fucus serratus. Fauna had good diversity in this zone especially below and on the underside of boulders.

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