Amazonian biogenic volatile organic compounds under global change
Yáñez Serrano, Ana María (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Bourtsoukidis, Efstratios (Max Planck Institute for Chemistry. Department of Atmospheric Chemistry and Multiphase Chemistry)
Gomes Alves, Eliane (Max Planck Institute for Biogeochemistry. Department of Biogeochemical Processes)
Bauwens, Maite (Royal Belgian Institute for Space Aeronomy)
Stavrakou, Trissevgeni (Royal Belgian Institute for Space Aeronomy)
Llusià Benet, Joan (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Filella, Iolanda (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Guenther, Alex (University of California. Department of Earth System Science)
Williams, Jonathan (Max Planck Institute for Chemistry. Department of Atmospheric Chemistry)
Artaxo, Paulo (Universidade de Sao Paulo. Instituto de Física)
Sindelarova, Katerina (Charles University (Praga, Txèquia). Department of Atmospheric Physics)
Doubalova, Jana (Charles University (Praga, Txèquia). Department of Atmospheric Physics)
Kesselmeier, Jürgen (Max Planck Institute for Chemistry. Department of Atmospheric Chemistry)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)

Data:	2020
Resum:	Biogenic volatile organic compounds (BVOCs) play important roles at cellular, foliar, ecosystem and atmospheric levels. The Amazonian rainforest represents one of the major global sources of BVOCs, so its study is essential for understanding BVOC dynamics. It also provides insights into the role of such large and biodiverse forest ecosystem in regional and global atmospheric chemistry and climate. We review the current information on Amazonian BVOCs and identify future research priorities exploring biogenic emissions and drivers, ecological interactions, atmospheric impacts, depositional processes and modifications to BVOC dynamics due to changes in climate and land cover. A feedback loop between Amazonian BVOCs and the trends of climate and land-use changes in Amazonia is then constructed. Satellite observations and model simulation time series demonstrate the validity of the proposed loop showing a combined effect of climate change and deforestation on BVOC emission in Amazonia. A decreasing trend of isoprene during the wet season, most likely due to forest biomass loss, and an increasing trend of the sesquiterpene to isoprene ratio during the dry season suggest increasing temperature stress-induced emissions due to climate change.
Ajuts:	European Commission 610028 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1005
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Air chemistry ; Amazonia ; Biogenic volatile organic compounds ; Climate ; Depositional processes ; Ecological interactions ; Global change ; Land cover ; Land use
Publicat a:	Global change biology, Vol. 26, issue 9 (Sep. 2020) , p. 4722-4751, ISSN 1365-2486

DOI: 10.1111/gcb.15185

Postprint 48 p, 1.6 MB

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