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- W2550375868 abstract "We applied principal component analysis on a data set of 55 compounds obtained with thermochemolysis with tetramethylammonium hydroxide as chemical agent from samples (24 different depths) along a one-meter length peat core. Principal component analysis allows to reduce the dimensionality of a data set that retains most of the variation present in the original variables (here F1 + F2 = 54.57%). Compounds are from four biochemical classes (lignin, carbohydrates and fatty and ω-hydroxy acids). Results show that samples are grouped in three clusters in the F1–F2 plot. Biomarkers of microbial and especially bacterial activity (terminally branched fatty acids) and of Sphagnum mosses (p-hydroxyphenyl compounds, fucose) are concentrated in the surface layers: the acrotelm (from 0 to −20 cm) and the mesotelm (from −20 to −50 cm). Biomarkers of higher plant contribution (C20+ fatty acids, C22 and C24 ω-hydroxy fatty acids, xylose and lignin compounds) are concentrated in the deeper layers of the peat core: the catotelm (from −50 to −100 cm)." @default.
- W2550375868 created "2016-11-30" @default.
- W2550375868 creator A5036127945 @default.
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- W2550375868 date "2017-03-01" @default.
- W2550375868 modified "2023-09-26" @default.
- W2550375868 title "Analysis of molecular proxies of a peat core by thermally assisted hydrolysis and methylation-gas chromatography combined with multivariate analysis" @default.
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- W2550375868 doi "https://doi.org/10.1016/j.jaap.2016.11.014" @default.
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