Guidelines for monitoring of chlorophyll a.
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Increase in phytoplankton biomass is a direct consequence of advancing eutrophication. For monitoring purposes, phytoplankton biomass is estimated by chlorophyll a (Chl a) concentration. The amount of Chl a is not a direct proxy for phytoplankton biomass because of a highly variable ratio of cellular carbon to Chl a in phytoplankton (Geider 1987). Phytoplankton biomass, except for picoplankton, is more accurately assessed by quantitative taxonomical analysis. It is, however, laborious and thus provides with a smaller amount of data than the Chl a method, which lowers the status confidence of any taxonomybased indicator. Regardless of its shortcomings, the Chl a method ‒ being easy to sample and fast to analyze ‒ is the method of choice for environmental studies. The scope of this guideline is the determination of Chl a concentration; measured from water samples using wet analytics as well as estimated from in vivo Chl a fluorescence recordings......
Sustainable Development Goals (SDG)14
Maturity LevelTRL 8 Actual system completed and "mission qualified" through test and demonstration in an operational environment (ground or space)
Best Practice TypeManual (incl. handbook, guide, cookbook etc)
Spatial CoverageBaltic Sea
CitationHELCOM (2016) Guidelines for monitoring of chlorophyll a. Hesinki, Finland, HELCOM, 5pp. DOI: http://dx.doi.org/10.25607/OBP-1064