Marine Biodiversity Data Portal - NI
Rinagree Point, North Coast.
Survey number: 555 Event number: 19840708/21 Date: 1984-07-08 GPS: 55.19583,-6.69200. Depth: 3.5 to 0.2 m. [ View map ]
Site Description: The location consists of igneous platforms with extensive flat tops and rock nodules, with steep ridges. Occasionally a smooth surface extends to low water, and one of these was chosen for the transect site. The platforms were convoluted with many small inlets which tended to have different exposures depending on their orientation to wave action. The nodules on the tops of the platform formed crevices and small overhangs. Between the nodules were flat wet areas (dominated by Ulva (originally recorded as Enteromorpha)) and large deep rock pools with pebbles and sand at the bottoms. The zonation over the location as a whole tended to change with exposure, with a fucoid, Littorina zonation dominating the moderately exposed areas, and a RhodoMytilus zone the more exposed parts. The site chosen for the transect was a small promontory which sloped gradually to low water - this was relatively exposed. The splash zone was extensive reaching far up the cliff. It had a good lichen diversity and many Littorina in crevices. Freshwater tended to seep from the cliff giving a definite influence in the pools of the extreme upper shore. Some vertical rock faces were also present. These were generally exposed.
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Species list (155 species recorded)
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