IA2017 Concentration of Chlorophyll-a - Data Results

1 February 2017

Concentrations of chlorophyll-a in the Greater North Sea and Celtic Seas

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Publication Date 18-Sep-2017
Title IA2017 Concentration of Chlorophyll-a - Data Results
Keywords Water Algal Blooms,Chlorophyll
Abstract Data results supporting IA2017 Indicator Assessment Concentrations of Chlorophyll-a in the Greater North Sea and Celtic Seas Chlorophyll-a is one of a suite of five eutrophication indicators. When assessed and considered together in the OSPAR Common Procedure in a multi-step method, the suite can be used to diagnose eutrophication. Decreasing (improving) trends in chlorophyll-a concentration are found in the Sound and Skagerrak (1990–2014), and in the offshore parts of the Greater North Sea (2006-2014). There is a small upward trend (low confidence) in the offshore Celtic Seas. Elevated concentrations are found in some coastal areas. [Version 001]
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