Marine Biodiversity Data Portal - NI

Black Head, Rathlin Island.

[Site list for year 1986]

Survey number: 555 Event number: 19860918/21 Date: 1986-09-18 GPS: 55.28993,-6.26061. Depth: 3.5 to 0.2 m. [ View map ]

Site Description: An exposed basalt headland on the southern side of Rathlin island. The headland is an irregular rock outcrop from the base of a cliff, with vertical sides on which the intertidal occurs, and top being in the splash zone. The vertical rock sides are exposed with a Hydropunctaria maura (originally recorded as Verrucaria maura), littorinids splash zone, and extensive barnacle zone and encrusters (non and calcareous) with Alaria/Himanthalia dominant in the lower shore. More sheltered habitats occur which have the same zonation, but a greater diversity of species. This area has been searched although it is off transect. A rich encruster flora is present here which are readily available for collection. The top of the step has large deep pools dominated by encrusting corallines and green algae which are replenished by splash or wave wash during rough weather.

No images for site.