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

by Sörgel, Matthias , Pires Florentino, Ana Paula , Barbosa, Cybelli G. G. , de Oliveira, Sylvia Mota , Alves, Rodrigo P. , Aptroot, André , Pfannerstill, Eva Y. , Zannoni, Nora , Williams, Jonathan , de Oliveira Sá, Marta , de Araújo, Alessandro C. , Weber, Bettina , Wolff, Stefan , Tsokankunku, Anywhere , Edtbauer, Achim , Rodriguez-Caballero, Emilio

in Aerosols / Atmospheric chemistry / Bryophytes / Canopies / Emission measurements / Emissions / Hydroxyl radicals / Lichens / Organic compounds / Organisms / Oxidants / Oxidation / Oxidizing agents / Rainforests / Sesquiterpenoids / Tropical forests / VOCs / Volatile organic compounds

2021

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

2021

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

2021

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Journal Article

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

Sörgel, Matthias,

Pires Florentino, Ana Paula,

Barbosa, Cybelli G. G.,

de Oliveira, Sylvia Mota,

Alves, Rodrigo P.,

Aptroot, André,

Pfannerstill, Eva Y.,

Zannoni, Nora,

Williams, Jonathan,

de Oliveira Sá, Marta,

de Araújo, Alessandro C.,

Weber, Bettina,

Wolff, Stefan,

Tsokankunku, Anywhere,

Edtbauer, Achim,

Rodriguez-Caballero, Emilio

2021

Overview

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.

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Publisher

Nature Publishing Group,Nature Portfolio

Subject

Aerosols

/ Atmospheric chemistry

/ Bryophytes

/ Canopies

/ Emission measurements

/ Emissions

/ Hydroxyl radicals