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How does fire affect leaf chemistry?

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Fire significantly impacts leaf chemistry by altering the composition of leaf litter and influencing plant traits. Studies show that fire-induced changes in leaf chemistry can affect decomposition rates and nutrient cycling. For instance, heating leaf litter can modify its composition, with alkyl C, O-alkyl C, and methoxyl + N-alkyl C decreasing while aromatic C increases. Additionally, prescribed burning can trigger variations in plant defenses, leading to changes in secondary metabolites like terpenes and phenolics in needles. Fire exposure also affects the release of heavy metals from ash, with CaCO₃ content increasing with temperature and influencing the solubility of metals like Al, Mn, Fe, and Zn. Overall, fire plays a crucial role in reshaping leaf chemistry and ecosystem dynamics.

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Open access Heavy metals released from leaf litter exposed to different fire temperatures. A laboratory experiment Paulo Pereira, Xavier Úbeda, Deborah A. Martin - Show less +2 more 01 Jan 2011 9 Citations	Fire affects leaf chemistry by influencing heavy metal release. Low-medium temperatures increase Al and Mn solubility, while higher temperatures decrease Fe and Zn solubility due to pH and CaCO3 effects.
Journal Article•DOI Influence of Pyrolysis Gas Composition and Reaction Kinetics on Leaf-Scale Fires Peyman Rahimi Borujerdi, Babak Shotorban, Shankar Mahalingam, David R. Weise - Show less +3 more 18 Oct 2022-Combustion Science and Technology 1 Citations	Not addressed in the paper.
Journal Article•DOI Differences in nutrients, organic components and decomposition pattern of Phillyrea angustifolia leaf litter across a low maquis A. De Marco, Riccardo Spaccini, A. Virzo De Santo - Show less +2 more 29 Apr 2021-Plant and Soil 4 Citations	Fire affects leaf chemistry by altering composition and decomposition patterns of Phillyrea angustifolia litter. Differences in nutrients, lignin, nitrogen, and manganese were observed post-fire, influencing decomposition dynamics.
Open access•Journal Article•DOI Fire effects on litter chemistry and early development of Eucalyptus globulus Ana Águas, Ana Águas, Guido Incerti, Antonio Saracino, Virginia Lanzotti, Joaquim S. Silva, Joaquim S. Silva, Francisco Castro Rego, Stefano Mazzoleni, Giuliano Bonanomi - Show less +9 more 01 Jan 2018-Plant and Soil 13 Citations	Fire alters leaf chemistry by decreasing alkyl C, O-alkyl C, and methoxyl + N-alkyl C while increasing aromatic C. This change impacts germination and growth of Eucalyptus globulus.

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