ĭreßler M, Hübener T, Görs S, Werner P, Selig U (2007) Multi-proxy reconstruction of trophic state, hypolimnetic anoxia and phototrophic sulphur bacteria abundance in a dimictic lake in Northern Germany over the past 80 years. Arch Hydrobiol 72:277–304ĭeshpande BN, Tremblay R, Pienitz R, Vincent WF (2014) Sedimentary pigments as indicators of cyanobacterial dynamics in a hypereutrophic lake. ĭaley RJ, Brown SR (1973) Experimental characterization of lacustrine chlorophyll diagenesis. Ĭarpenter SR, Elser MM, Elser JJ (1986) Chlorophyll production, degradation, and sedimentation: implications for paleolimnology. īutz C, Grosjean M, Fischer D, Wunderle S, Tylmann W, Rein B (2015) Hyperspectral imaging spectroscopy: a promising method for the biogeochemical analysis of lake sediments. CRC Press, Boca Raton, pp 465–489īuchaca T, Catalan J (2008) On the contribution of phytoplankton and benthic biofilms to the sediment record of marker pigments in high mountain lakes. īrown SB, Houghton JD, Hendry GAF (1991) Chlorophyll breakdown. īianchi TS, Canuel EA (2011) Chemical biomarkers in aquatic ecosystems. īelle S, Musazzi S, Lami A (2018) Glacier dynamics influenced carbon flows through lake food webs: evidence from a chironomid δ 13C-based reconstruction in the Nepalese Himalayas. The new method is useful for obtaining, in a cost- and time-efficient way, information about major sedimentary pigment groups that are relevant to inferring paleoproduction, potentially green algae biomass, pigment preservation and early diagenetic effects.īarbieri A, Mosello R (1992) Chemistry and trophic evolution of Lake Lugano in relation to nutrient budget. Our mathematical approach quantifies the concentration of chlorophyll b ( \( ) is only weakly correlated with aquatic paleoproduction (r adj = 0.35, p-value = 0.045) and remained remarkably constant in the recent century despite strong anthropogenic eutrophication. We validated our method against high-performance liquid chromatography (HPLC) measurements on standard solutions and on varved, anoxic sediment from eutrophic Lake Lugano (Ponte Tresa sub-basin, southern Switzerland), where the history of productivity is relatively well known for the twentieth century. We have developed a new rapid and low-cost approach to infer the concentrations of chlorophyll a, chlorophyll b and related chlorophyll derivatives (pheopigments a) from the mathematical decomposition of UV–VIS measured bulk spectrophotometer absorption spectra of standard solutions and sediment extracts. Using chromatographic techniques to analyze long records at high resolution is impractical because they are expensive and labor intensive. Assessments of aquatic paleoproduction and pigment preservation require accurate identification and quantification of sedimentary chlorophylls.
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