@article{gledocs_11858_11305, author = {Edtbauer, Achim and Pfannerstill, Eva Y. and Pires Florentino, Ana Paula and Barbosa, Cybelli G. G. and Rodriguez-Caballero, Emilio and Zannoni, Nora and Alves, Rodrigo P. and Wolff, Stefan and Tsokankunku, Anywhere and Aptroot, André and de Oliveira Sá, Marta and de Araújo, Alessandro C. and Sörgel, Matthias and de Oliveira, Sylvia Mota and Weber, Bettina and Williams, Jonathan}, title = {Cryptogamic organisms are a substantial source and sink for volatile organic compounds in the Amazon region}, year = {2021-12-21}, volume = {2}, number = {1}, publisher = {Nature Publishing Group UK}, publisher = {}, 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.}, note = { \url {http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/11305}}, }