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Title: National marine baseline survey 1995 : littoral cell 9 : St David's Head to Bardsey Sound
Author: Environment Agency - National Centre for Environmental Monitoring and Surveillance
Document Type: Monograph
This report describes the National marine baseline of the English Channel coast stretches from St David's Head in the south to Bardsey Sound off the Lleyn Peninsula in the north. There are no major industrial regions within this cell, which results in a homogeneous water quality for most determinands. No sites recorded dissolved metals concentrations in excess of any individual Environmental Quality Standard (EQS). Organic contaminants were below the minimum reporting value for all sites. Two sites showed elevated concentrations of total oxidised nitrogen (TON) in Summer, at Pwllheli (154) equal to 393.6 microng/l and Shell Island (153) equal to 294 microng/l. The laboratory sample from the Pwllheli (154) site did not show exceptionally high Chlorophyll-a concentration, although there was an increase in the underway fluorescence data. Spatial Chlorophyll-a results showed that this region had Chlorophyll-a concentrations between 2 and 6 microng/l in July.
Publisher: Environment Agency
Publication Date: 1995
Publication Place: Bath
Subject Keywords: Coastal watersCoastal and oceanic landformsWater qualityAerial surveyingSurveysMetalsSuspended solidsNutrientsChlorophyllsEstuaries
Geographic Keywords: WalesGwynedd
Extent: n.p. [23]
Total file downloads: 322

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