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Cryptogamic organisms are a substantial source and sink for volatile organic compounds in the Amazon region

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Edtbauer,  Achim
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons207351

Pfannerstill,  Eva Y.
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

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Pires Florentino,  Ana Paula
Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons230615

Barbosa,  Cybelli G. G.
Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

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Zannoni,  Nora
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons230426

Wolff,  Stefan
Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

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Tsokankunku,  Anywhere
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

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Sörgel,  Matthias
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons133115

Weber,  Bettina
Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

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Williams,  Jonathan
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

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Citation

Edtbauer, A., Pfannerstill, E. Y., Pires Florentino, A. P., Barbosa, C. G. G., Rodriguez-Caballero, E., Zannoni, N., et al. (2021). Cryptogamic organisms are a substantial source and sink for volatile organic compounds in the Amazon region. Communications Earth & Environment, 2: 258. doi:10.1038/s43247-021-00328-y.


Cite as: http://hdl.handle.net/21.11116/0000-0009-AC6A-F
Abstract
Cryptogamic organisms such as bryophytes and lichens cover most surfaces within tropical forests, yet their impact on the emission of biogenic volatile organic compounds is unknown. These compounds can strongly influence atmospheric oxidant levels as well as secondary organic aerosol concentrations, and forest canopy leaves have been considered the dominant source of these emissions. Here we present cuvette flux measurements, made in the Amazon rainforest between 2016–2018, and show that common bryophytes emit large quantities of highly reactive sesquiterpenoids and that widespread lichens strongly uptake atmospheric oxidation products. A spatial upscaling approach revealed that cryptogamic organisms emit sesquiterpenoids in quantities comparable to current canopy attributed estimates, and take up atmospheric oxidation products at rates comparable to hydroxyl radical chemistry. We conclude that cryptogamic organisms play an important and hitherto overlooked role in atmospheric chemistry above and within tropical rainforests.