Use of chlorophyll and carotenoid pigments as biomarkers : algal pigments as biomarkers of phytoplankton composition


As was shown by a series of studies carried out for the most part in marine environments in the eighties, it is possible to describe phytoplankton composition using carotenoid pigment signatures specific of the different algal classes, and analyzed by HPLC. The most popular calculation method is based on multiple regression algorithms, and yields a series of ratios between chlorophyll a and the various carotenoids of interest. The final result of such calculations is an estimate of the biomass of all algal classes, expressed in chlorophyll a 'equivalents'. Coupled with other methods, analyzing pigments makes it possible to setup nearly automatic analytic procedures capable of handling large sample sets, and therefore to carry out large-scale census studies or else finely detailed studies of spatio-temporal variations in composition of algal assemblages. Quantifying pigments also renders the detection of phototrophic bacteria feasible, in deep anoxic waters. The validity of this technique can be proven, most notably by the similitudes between chl a/xanthophyll ratios obtained from marine, estuary, and more seldom lacustrine environments. This method based on major biomarkers however has its limitations, as it cannot discriminate between algal classes with comparable pigment signatures, like diatoms and Chrysophyta for exemple. An other approach can help resolve that problem, namely the CHEMTAX software package. Designed by australian oceanographers, it offers the possibility to estimate biomass on the basis of several pigments at once for each algal class. Its performances have been tested on data sets from various plankton collections from lakes of the LTER (North Wisconsin, USA, Descy et al 2000), the River Meuse in Belgium (1997 and 1998), the reservoirs of Bütgenbach, Robertville and Esch-sur-Sûre.


pigments, hplc, phytoplankton, trophic relationships


Belgium {Geographical scope}
Wisconsin {Geographical scope}


Name Role Start End
Descy, Jean-Pierre promotor 1999-01-01


Name Role Start End
Unité de recherche en biologie des organismes unknown


Reference Role
Jean-Pierre DESCY, Bruno LEPORCQ, Marie-Astrid HARDY, Samuel PIRLOT, Stephane STENUITE, Ismaël KIMIREI, Baraka SEKADENDE, Sihaba MWAITEGA, Danny SINYENZA, Le phytoplancton du lac Tanganyika: une vision par l'analyse des pigments algaux, in Bulletin de l'Académie Royale des Sciences d'Outre Mer, volume 51, issue 2, pp. 129-142 author
Jean-Pierre DESCY, Marie-Astrid HARDY, Stephane STENUITE, Samuel PIRLOT, Bruno LEPORCQ, Ismael KIMIREI, Baraka SEKADENDE, Siaba MWAITEGA, Danny SINYENZA, Phytoplankton pigments and community composition in Lake Tanganyika, in Freshwater Biology, volume 50, issue 4, pp. 668-684 author
I. THYS, B. LEPORCQ, Jean-Pierre DESCY, Seasonal shifts in phytoplankton ingestion by Daphnia galeata, assessed by analysis of marker pigments. J. Plankton Res., 25, 12, 1471-1484. author
Jean-Pierre DESCY, H. HIGGINS, D. MACKEY, J. HURLEY, T.M. FROST, Pigments and phytoplankton composition in LTER lakes (Wisconsin, USA). Verh. Int. Verein. Limnol., 27, 930-931 author
T. FROST, Jean-Pierre DESCY, B. DESTASIO, G. GERRISH, J. HOOD, J.-P. HURLEY, A. ST. AMAND, Evaluations of phytoplankton communities using varied techniques; a multi-media comparison of lakes in northern Wisconsin (USA), in Vehr. Internat. Verein. Limnol, volume 27, pp. 1023-1030 author
Jean-Pierre DESCY, A. MÉTENS, Biomass-pigment relationship in potamoplankton. Journal of Plankton Research, 18(9), 1557-1566. author

created:2011-12-14 14:18:59 UTC, source:cref

© 2012 by the Belgian Biodiversity Platform