Investigating the impact of peatland degradation

Author(s): Nasreen Jeelani, Katharina Fischer, Carrie L. Thomas, Klaus Holger Knorr, Mariusz Lamentowicz, Mariusz Gałka, Stephan Glatzel
Abstract: Lipids, such as aliphatics, phenolics, and carboxylic acids, are key biomarkers for analyzing peat composition, decomposition, and microbial activity. This study provides a comparative analysis of lipid biomarkers from natural, extracted, degraded, and restored bog sites in Germany, Poland, and Austria. We investigate samples from various depths, assessing how effectively these biomarkers reflect environmental conditions and restoration success. The aliphatic hydrocarbon fractions showed the site specific pattern in n-alkanes (C₁₅ to C₃₃), with variations in carbon preference index (CPI), average chain length (ACL), and proxy of aquatic macrophytes input (P_aq) indicating shifts in vegetation and moisture. The presence of triterpenoids, sterols, hopanoids, and archaeol provides insights into the vegetation composition and microbial processes. Our finding highlights the complex interaction of chemical and biological factors in peatlands. Restoration sites exhibit elevated biomarker concentrations similar to natural conditions, whereas degraded sites show lower concentrations, suggests additional restoration efforts are needed to achieve natural condition.
Organisation(s): Faculty of Earth Sciences, Geography and Astronomy, Department of Geography and Regional Research
External organisation(s): Radboud University, Universität Münster, Adam Mickiewicz University, University of Lodz
Journal: Iscience
Volume: 28
ISSN: 2589-0042
DOI: https://doi.org/10.1016/j.isci.2025.112604
Publication date: 06-2025
Peer reviewed: Yes
Austrian Fields of Science 2012: 105405 Geoecology
Keywords
ASJC Scopus subject areas: General
Portal url: https://ucrisportal.univie.ac.at/en/publications/c253cc27-8cfb-4341-b305-ec220db94474

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