Origin of volatile organic compound emissions from subarctic tundra under global warming.
Warming occurs in the Arctic twice as fast as the global average, which in turn leads to a large enhancement in terpenoid emissions from vegetation. Volatile terpenoids are the main class of biogenic volatile organic compounds (VOCs) that play crucial roles in atmospheric chemistry and climate. Howe...
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Online Access: | https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=58730 https://doi.org/10.1111/gcb.14935 |
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fthzmuenchen:oai:opus-zb.helmholtz-muenchen.de:58730 2023-05-15T14:52:58+02:00 Origin of volatile organic compound emissions from subarctic tundra under global warming. Ghirardo, A. Lindstein, F. Koch, K. Buegger, F. Schloter, M. Albert, A. Michelsen, A. Winkler, J.B. Schnitzler, J.-P. Rinnan, R. 2020-01-01 application/pdf https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=58730 https://doi.org/10.1111/gcb.14935 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1111/gcb.14935 info:eu-repo/semantics/altIdentifier/pmid/31957145 info:eu-repo/semantics/altIdentifier/wos/WOS:000507982200001 info:eu-repo/semantics/altIdentifier/isbn/1354-1013 info:eu-repo/semantics/altIdent https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=58730 doi:10.1111/gcb.14935 urn:isbn:1354-1013 urn:issn:1354-1013 urn:issn:1365-2486 info:eu-repo/semantics/openAccess Glob. Change Biol. 26, 1908-1925 (2020) 13co2 Arctic Climate Change De Novo Biosynthesis Global Warming Net Ecosystem Exchange Subarctic Heath Terpene Tundra Volatile Organic Compound Text info:eu-repo/semantics/article 2020 fthzmuenchen https://doi.org/10.1111/gcb.14935 2022-11-20T09:09:26Z Warming occurs in the Arctic twice as fast as the global average, which in turn leads to a large enhancement in terpenoid emissions from vegetation. Volatile terpenoids are the main class of biogenic volatile organic compounds (VOCs) that play crucial roles in atmospheric chemistry and climate. However, the biochemical mechanisms behind the temperature-dependent increase in VOC emissions from subarctic ecosystems are largely unexplored. Using 13 CO2 -labeling, we studied the origin of VOCs and the carbon (C) allocation under global warming in the soil-plant-atmosphere system of contrasting subarctic heath tundra vegetation communities characterized by dwarf shrubs of the genera Salix or Betula. The projected temperature rise of the subarctic summer by 5°C was realistically simulated in sophisticated climate chambers. VOC emissions strongly depended on the plant species composition of the heath tundra. Warming caused increased VOC emissions and significant changes in the pattern of volatiles toward more reactive hydrocarbons. The 13 C was incorporated to varying degrees in different monoterpene and sesquiterpene isomers. We found that de novo monoterpene biosynthesis contributed to 40%-44% (Salix) and 60%-68% (Betula) of total monoterpene emissions under the current climate, and that warming increased the contribution to 50%-58% (Salix) and 87%-95% (Betula). Analyses of above- and belowground 12/13 C showed shifts of C allocation in the plant-soil systems and negative effects of warming on C sequestration by lowering net ecosystem exchange of CO2 and increasing C loss as VOCs. This comprehensive analysis provides the scientific basis for mechanistically understanding the processes controlling terpenoid emissions, required for modeling VOC emissions from terrestrial ecosystems and predicting the future chemistry of the arctic atmosphere. By changing the chemical composition and loads of VOCs into the atmosphere, the current data indicate that global warming in the Arctic may have implications for regional and ... Article in Journal/Newspaper Arctic Climate change Global warming Subarctic Tundra PuSH - Publikationsserver des Helmholtz Zentrums München Arctic Global Change Biology 26 3 1908 1925 |
institution |
Open Polar |
collection |
PuSH - Publikationsserver des Helmholtz Zentrums München |
op_collection_id |
fthzmuenchen |
language |
English |
topic |
13co2 Arctic Climate Change De Novo Biosynthesis Global Warming Net Ecosystem Exchange Subarctic Heath Terpene Tundra Volatile Organic Compound |
spellingShingle |
13co2 Arctic Climate Change De Novo Biosynthesis Global Warming Net Ecosystem Exchange Subarctic Heath Terpene Tundra Volatile Organic Compound Ghirardo, A. Lindstein, F. Koch, K. Buegger, F. Schloter, M. Albert, A. Michelsen, A. Winkler, J.B. Schnitzler, J.-P. Rinnan, R. Origin of volatile organic compound emissions from subarctic tundra under global warming. |
topic_facet |
13co2 Arctic Climate Change De Novo Biosynthesis Global Warming Net Ecosystem Exchange Subarctic Heath Terpene Tundra Volatile Organic Compound |
description |
Warming occurs in the Arctic twice as fast as the global average, which in turn leads to a large enhancement in terpenoid emissions from vegetation. Volatile terpenoids are the main class of biogenic volatile organic compounds (VOCs) that play crucial roles in atmospheric chemistry and climate. However, the biochemical mechanisms behind the temperature-dependent increase in VOC emissions from subarctic ecosystems are largely unexplored. Using 13 CO2 -labeling, we studied the origin of VOCs and the carbon (C) allocation under global warming in the soil-plant-atmosphere system of contrasting subarctic heath tundra vegetation communities characterized by dwarf shrubs of the genera Salix or Betula. The projected temperature rise of the subarctic summer by 5°C was realistically simulated in sophisticated climate chambers. VOC emissions strongly depended on the plant species composition of the heath tundra. Warming caused increased VOC emissions and significant changes in the pattern of volatiles toward more reactive hydrocarbons. The 13 C was incorporated to varying degrees in different monoterpene and sesquiterpene isomers. We found that de novo monoterpene biosynthesis contributed to 40%-44% (Salix) and 60%-68% (Betula) of total monoterpene emissions under the current climate, and that warming increased the contribution to 50%-58% (Salix) and 87%-95% (Betula). Analyses of above- and belowground 12/13 C showed shifts of C allocation in the plant-soil systems and negative effects of warming on C sequestration by lowering net ecosystem exchange of CO2 and increasing C loss as VOCs. This comprehensive analysis provides the scientific basis for mechanistically understanding the processes controlling terpenoid emissions, required for modeling VOC emissions from terrestrial ecosystems and predicting the future chemistry of the arctic atmosphere. By changing the chemical composition and loads of VOCs into the atmosphere, the current data indicate that global warming in the Arctic may have implications for regional and ... |
format |
Article in Journal/Newspaper |
author |
Ghirardo, A. Lindstein, F. Koch, K. Buegger, F. Schloter, M. Albert, A. Michelsen, A. Winkler, J.B. Schnitzler, J.-P. Rinnan, R. |
author_facet |
Ghirardo, A. Lindstein, F. Koch, K. Buegger, F. Schloter, M. Albert, A. Michelsen, A. Winkler, J.B. Schnitzler, J.-P. Rinnan, R. |
author_sort |
Ghirardo, A. |
title |
Origin of volatile organic compound emissions from subarctic tundra under global warming. |
title_short |
Origin of volatile organic compound emissions from subarctic tundra under global warming. |
title_full |
Origin of volatile organic compound emissions from subarctic tundra under global warming. |
title_fullStr |
Origin of volatile organic compound emissions from subarctic tundra under global warming. |
title_full_unstemmed |
Origin of volatile organic compound emissions from subarctic tundra under global warming. |
title_sort |
origin of volatile organic compound emissions from subarctic tundra under global warming. |
publishDate |
2020 |
url |
https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=58730 https://doi.org/10.1111/gcb.14935 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Global warming Subarctic Tundra |
genre_facet |
Arctic Climate change Global warming Subarctic Tundra |
op_source |
Glob. Change Biol. 26, 1908-1925 (2020) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/gcb.14935 info:eu-repo/semantics/altIdentifier/pmid/31957145 info:eu-repo/semantics/altIdentifier/wos/WOS:000507982200001 info:eu-repo/semantics/altIdentifier/isbn/1354-1013 info:eu-repo/semantics/altIdent https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=58730 doi:10.1111/gcb.14935 urn:isbn:1354-1013 urn:issn:1354-1013 urn:issn:1365-2486 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/gcb.14935 |
container_title |
Global Change Biology |
container_volume |
26 |
container_issue |
3 |
container_start_page |
1908 |
op_container_end_page |
1925 |
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1766324376991432704 |