Back to dataset

1982-Lumb-Menai-Strait-sublittoral-survey.csv

Species point records from 1982 Lumb Menai Strait sublittoral survey

You're previewing the first 4 rows of this file.

RecordKey	SurveyKey	SurveyName	SampleKey	StartDate	EndDate	DateType	LocationName	DataType	Latitude	Longitude	Projection	AphiaId	Species	Uncertain	Abundance_SACFORN	Abundance_Count	IsDead	SampleComment
JNCCMNCR10250586	JNCCMNCR10000293	1982 Lumb Menai Strait sublittoral survey	JNCCMNCR10010703	1982-04-10	1982-09-19	DD	Ynys Faelog (Menai Straits)	Point	53.2264117258195	-4.15706619197615	WGS84	107398	Necora puber	FALSE	C		FALSE	L. digitata, L. hyperborea and large L. saccharina plants, with H. siliquosa, were present down to 1.5m. Red algae, including G. flosculosa, G. corallinoides, C. ramosa and P. cartilagineum were found down to 2.5m. The large boulders were dominated by F. folicea, A. digitatum, erect hydroids and bryozoa, including N. ramosa, H. halecinum and Bugula spp., by H. panicea and T. indivisa or by H. oculata. Often the individual boulders were completely covered by a stand of just one or two species. The smaller boulders provided a variety of microhabitats and C. pagurus, L. puber, G. squamifera and P. gunnellus were frequent or common. On this substrate, where there was a thin silt cover, H. bowerbanki formed an extensive network of anastomosing branches. The sediment fauna included C. lloydii, locally abundant, Sagartia sp., S. pavonina, C. pedunculatus and U. felina. The site showed some similarities to Pwllfanog and was rich faunistically.
JNCCMNCR10250895	JNCCMNCR10000293	1982 Lumb Menai Strait sublittoral survey	JNCCMNCR10010715	1982-04-11	1982-04-11	D	George Hostel to Menai Bridge Pier (Menai Straits)	Point	53.2236898198499	-4.15842732359863	WGS84	107398	Necora puber	FALSE	O		FALSE	On the south shore there was a narrow band of L. digitata and L. saccharina down to 1m. Red algae were present down to 1.5m, but this region was sponge-dominated with both encrusting H. panicea and H. oculata common or abundant. A. digitatum and T. indivisa were frequent where tidal streams were strongest. No F. foliacea was recorded in shallow water but boulders covered in the species were found near the bed of the channel. There was an increase in polyclinid ascidians on the boulders in deeper water. U. felina, C. lloydii and S. pavonina were common in the finer sediment. No sponge growth was recorded on the Anglesey side of the transect. Erect hydroids and bryozoans were dominant and A. digitatum and F. foliacea were common. In shallow water C. maenas was abundant. Gyres are produced on the north side of the channel during the flood tide and on both sides during the ebb.
JNCCMNCR10251211	JNCCMNCR10000293	1982 Lumb Menai Strait sublittoral survey	JNCCMNCR10010732	1982-04-16	1982-04-16	D	Menai Suspension Bridge (Menai Straits)	Point	53.2191169835271	-4.16269062980655	WGS84	107398	Necora puber	FALSE	O		FALSE	There was a narrow Laminaria zone, but it did not extend below 0m. Large areas of rock covered in B. crenatus scars were present in shallow water, and on the scoured bed of the channel. The dominant cover on the profile was H. panicea, with a thin encrusting cover in shallow and deep water, and a massive form present on the steep rock slope. A. fucorum was common initially but became less so with increasing depth. U. felina was common in the pockets of shell gravel. F. foliacea was not observed at this site.
JNCCMNCR10250454	JNCCMNCR10000293	1982 Lumb Menai Strait sublittoral survey	JNCCMNCR10010697	1982-07-17	1982-07-17	D	Careg Onnen (Menai Straits)	Point	53.3196844868358	-4.11972706547931	WGS84	107398	Necora puber	FALSE	O		FALSE	The infralittoral had a dense red algal cover, with P. nigrescens common in the shallower water and P. pseudoceranoides and P. rubens dominant deeper. There was a high species diversity in this depth zone although there was a thick silt cover on the rock. In the shallow circalittoral, S. catenata was abundant, with A. digitatum, M. senile, S. carnosus and H. halecinum common. Between 3.5m and 5.5m, on a steeper boulder slope, H. halecinum was abundant with an O. fragilis bed just above the rock-sediment interface. The sediment plain at 9m was dominated by C. lloydii with A. rubens common. Over all the horizontal and sloping surfaces at the site there was a thick, flocculent layer of silt.