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1970-Ridley-north-west-Scotland-sublittoral-photographic-survey.csv

Species point records from 1970 Ridley north-west Scotland sublittoral photographic survey

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RecordKey	SurveyKey	SurveyName	SampleKey	StartDate	EndDate	DateType	LocationName	DataType	Latitude	Longitude	Projection	AphiaId	Species	Uncertain	Abundance_SACFORN	Abundance_Count	IsDead	SampleComment
JNCCMNCR10835266	JNCCMNCR10000063	1970 Ridley north-west Scotland sublittoral photographic survey	JNCCMNCR10003046	1970-01-01	1970-12-31	DD	Corran ferry (Upper Loch Linnhe)	Point	56.7255121906911	-5.23777743107771	WGS84	139523	Dendronotus frondosus	FALSE			FALSE	Kelp forest present in this loch, Laminaria hyperborea (A), with thick epiphytes growing thereon. Areas of pebbles and broken shell are also present.
JNCCMNCR10835279	JNCCMNCR10000063	1970 Ridley north-west Scotland sublittoral photographic survey	JNCCMNCR10003048	1970-01-01	1970-12-31	DD	Lady Rock (Lower Loch Linnhe)	Point	56.4489018583509	-5.61839159490999	WGS84	139523	Dendronotus frondosus	FALSE			FALSE	Bedrock exposed to water movements.
JNCCMNCR10835068	JNCCMNCR10000063	1970 Ridley north-west Scotland sublittoral photographic survey	JNCCMNCR10003037	1970-01-01	1970-12-31	DD	St. Kilda (Outer Hebrides & outliers)	Point	57.8329937484855	-8.60081841756398	WGS84	135144	Caryophyllia (Caryophyllia) smithii	FALSE			FALSE	STEEP AND VERTICAL ROCK. The majority of steep rock surfaces in the circalittoral zone appear to be covered by encrusting species of sponges, bryozoans and algae. The most common mixtures to appear in the photographs are as follows: i) A bryozoan turf with a variety of other species including red algae at shallower depths, and Sagartia elegans. ii) Corynactis viridis often with encrusting sponges, lithothamnion or Alcyonium. iii) Tubularia indivisa with bryozoans and encrusting sponges. iv) Overhangs with thick growths of Tubularia, encrusting sponges and anemones. HORIZONTAL AND MODERATELY SLOPING ROCK. Extensive areas of smooth sloping bedrock are present as well as horizontal rock ridges of varying sizes. Again, encrusting and low growing species predominate: i) Large areas dominated by Tubularia indivisa and a yellow encrusting sponge - possible Tubularia/Halichondria panicea community?? ii) Extensive sloping 'walls' dominated by Metridium senile and a yellow encrusting sponge that may be Myxilla incrustans. iii) Thick clean bryozoan turf with other species such as Alcyonium; algae (shallow depths); Sagartia elegans and Corynactis viridis. iv) Extensive mosaics of Alcyonium digitatum (predominant), encrusting sponges, hydroids and scattered algae. v) 'Barer' areas of lithothamnion, encrusting bryozoans, Clavellina lepadiformis and scattered larger species such as Alcyonium. vi) Horizontal ledges of Alcyonium digitatum, Haliclona sp. and hydroids. vii) Kelp park with an undergrowth of red algae, lithothamnion and Alcyonium. BOULDERS. Boulders were either rather 'bare' with a cover of encrusting bryozoans, lithothamnion and Pomatoceros triqueter (especially on the sides); or were covered by Alcyonium digitatum and encrusting sponges. The latter are probably less mobile than the former. ANIMAL MOSAICS. Many of the photographs showed small areas of rock covered by a variety of species, but were on too large a scale to show the extent of each species or the slope of the rock: i) Lithothamnion and a low silty turf of either amphipod tubes or bryozoans with a variety of other species especially Caryophyllia smithi, Sagartia elegans, Clavellina and Actinothoe. ii) Tubularia indivisa and Sagartia elegans varieties. iii) Corynactis viridis. iv) Alcyonium digitatum, Metridium senile and Tubularia indivisa. v) Orange encrusting sponge and Sagartia elegans. vi) Corynactis viridis and clean bryozoan turf. vii) Encrusting sponges, encrusting bryozoans, erect bryozoans and anemones.
JNCCMNCR10835115	JNCCMNCR10000063	1970 Ridley north-west Scotland sublittoral photographic survey	JNCCMNCR10003038	1970-01-01	1970-12-31	DD	Butt of Lewis (Lewis)	Point	58.5107184566304	-6.27696647387614	WGS84	135144	Caryophyllia (Caryophyllia) smithii	FALSE			FALSE	BEDROCK OVERHANGS. Vertical and overhanging rock appears to be dominated mainly by small barnacles and in some places by juvenile Metridium senile. Rock crevices provide ideal habitats for Galathea strigosa and the ling Molva molva. Corynactis viridis also dominates some of the overhangs. VERTICAL BEDROCK. Vertical sides of deep extensive gullies, are covered in an encrusting sponge, a short turf of bryozoa, lithothamnion, or barnacles with scattered Alcyonium digitatum. The cover appears to depend to extent on the position of the rock face within the gully and therefore perhaps the depth of shade. EXTENSIVE SLOPING BEDROCK. Where sufficient light is present on upward facing surfaces red algae are present mixed in with Alcyonium digitatum and encrusting sponges. COARSE SHELL SAND. This is present at the edge of the bedrock.