Bidirectional Exchange of Biogenic Volatile Organic Compounds in Subarctic Heath Mesocosms During Autumn Climate Scenarios
Biogenic volatile organic compound (BVOC) flux dynamics during the subarctic autumn are largely unexplored and have been considered insignificant due to the relatively low biological activity expected during autumn. Here, we exposed subarctic heath ecosystems to predicted future autumn climate scena...
Published in: | Journal of Geophysical Research: Biogeosciences |
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2022
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Online Access: | https://lup.lub.lu.se/record/bf7bbec6-d15d-4ee0-a12b-a30b5a0ccbe0 https://doi.org/10.1029/2021JG006688 |
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ftulundlup:oai:lup.lub.lu.se:bf7bbec6-d15d-4ee0-a12b-a30b5a0ccbe0 2024-05-19T07:35:55+00:00 Bidirectional Exchange of Biogenic Volatile Organic Compounds in Subarctic Heath Mesocosms During Autumn Climate Scenarios Baggesen, Nanna S. Davie-Martin, Cleo L. Seco, Roger Holst, Thomas Rinnan, Riikka 2022-06 https://lup.lub.lu.se/record/bf7bbec6-d15d-4ee0-a12b-a30b5a0ccbe0 https://doi.org/10.1029/2021JG006688 eng eng Wiley https://lup.lub.lu.se/record/bf7bbec6-d15d-4ee0-a12b-a30b5a0ccbe0 http://dx.doi.org/10.1029/2021JG006688 scopus:85132948478 pmid:35865237 Journal of Geophysical Research: Biogeosciences; 127(6), no e2021JG006688 (2022) ISSN: 2169-8953 Climate Research Physical Geography arctic autumn ecosystem-atmosphere interactions flooding global change volatile organic compound contributiontojournal/article info:eu-repo/semantics/article text 2022 ftulundlup https://doi.org/10.1029/2021JG006688 2024-04-30T23:40:11Z Biogenic volatile organic compound (BVOC) flux dynamics during the subarctic autumn are largely unexplored and have been considered insignificant due to the relatively low biological activity expected during autumn. Here, we exposed subarctic heath ecosystems to predicted future autumn climate scenarios (ambient, warming, and colder, dark conditions), changes in light availability, and flooding, to mimic the more extreme rainfall or snowmelt events expected in the future. We used climate chambers to measure the net ecosystem fluxes and bidirectional exchange of BVOCs from intact heath mesocosms using a dynamic enclosure technique coupled to a proton-transfer-reaction time-of-flight mass spectrometer (PTR–ToF–MS). We focused on six BVOCs (methanol, acetic acid, acetaldehyde, acetone, isoprene, and monoterpenes) that were among the most dominant and that were previously identified in arctic tundra ecosystems. Warming increased ecosystem respiration and resulted in either net BVOC release or increased uptake compared to the ambient scenario. None of the targeted BVOCs showed net release in the cold and dark scenario. Acetic acid exhibited significantly lower net uptake in the cold and dark scenario than in the ambient scenario, which suggests reduced microbial activity. Flooding was characterized by net uptake of the targeted BVOCs and overruled any temperature effects conferred by the climate scenarios. Monoterpenes were mainly taken up by the mesocosms and their fluxes were not affected by the climate scenarios or flooding. This study shows that although autumn BVOC fluxes on a subarctic heath are generally low, changes in future climate may strongly modify them. Article in Journal/Newspaper Arctic Subarctic Tundra Lund University Publications (LUP) Journal of Geophysical Research: Biogeosciences 127 6 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Climate Research Physical Geography arctic autumn ecosystem-atmosphere interactions flooding global change volatile organic compound |
spellingShingle |
Climate Research Physical Geography arctic autumn ecosystem-atmosphere interactions flooding global change volatile organic compound Baggesen, Nanna S. Davie-Martin, Cleo L. Seco, Roger Holst, Thomas Rinnan, Riikka Bidirectional Exchange of Biogenic Volatile Organic Compounds in Subarctic Heath Mesocosms During Autumn Climate Scenarios |
topic_facet |
Climate Research Physical Geography arctic autumn ecosystem-atmosphere interactions flooding global change volatile organic compound |
description |
Biogenic volatile organic compound (BVOC) flux dynamics during the subarctic autumn are largely unexplored and have been considered insignificant due to the relatively low biological activity expected during autumn. Here, we exposed subarctic heath ecosystems to predicted future autumn climate scenarios (ambient, warming, and colder, dark conditions), changes in light availability, and flooding, to mimic the more extreme rainfall or snowmelt events expected in the future. We used climate chambers to measure the net ecosystem fluxes and bidirectional exchange of BVOCs from intact heath mesocosms using a dynamic enclosure technique coupled to a proton-transfer-reaction time-of-flight mass spectrometer (PTR–ToF–MS). We focused on six BVOCs (methanol, acetic acid, acetaldehyde, acetone, isoprene, and monoterpenes) that were among the most dominant and that were previously identified in arctic tundra ecosystems. Warming increased ecosystem respiration and resulted in either net BVOC release or increased uptake compared to the ambient scenario. None of the targeted BVOCs showed net release in the cold and dark scenario. Acetic acid exhibited significantly lower net uptake in the cold and dark scenario than in the ambient scenario, which suggests reduced microbial activity. Flooding was characterized by net uptake of the targeted BVOCs and overruled any temperature effects conferred by the climate scenarios. Monoterpenes were mainly taken up by the mesocosms and their fluxes were not affected by the climate scenarios or flooding. This study shows that although autumn BVOC fluxes on a subarctic heath are generally low, changes in future climate may strongly modify them. |
format |
Article in Journal/Newspaper |
author |
Baggesen, Nanna S. Davie-Martin, Cleo L. Seco, Roger Holst, Thomas Rinnan, Riikka |
author_facet |
Baggesen, Nanna S. Davie-Martin, Cleo L. Seco, Roger Holst, Thomas Rinnan, Riikka |
author_sort |
Baggesen, Nanna S. |
title |
Bidirectional Exchange of Biogenic Volatile Organic Compounds in Subarctic Heath Mesocosms During Autumn Climate Scenarios |
title_short |
Bidirectional Exchange of Biogenic Volatile Organic Compounds in Subarctic Heath Mesocosms During Autumn Climate Scenarios |
title_full |
Bidirectional Exchange of Biogenic Volatile Organic Compounds in Subarctic Heath Mesocosms During Autumn Climate Scenarios |
title_fullStr |
Bidirectional Exchange of Biogenic Volatile Organic Compounds in Subarctic Heath Mesocosms During Autumn Climate Scenarios |
title_full_unstemmed |
Bidirectional Exchange of Biogenic Volatile Organic Compounds in Subarctic Heath Mesocosms During Autumn Climate Scenarios |
title_sort |
bidirectional exchange of biogenic volatile organic compounds in subarctic heath mesocosms during autumn climate scenarios |
publisher |
Wiley |
publishDate |
2022 |
url |
https://lup.lub.lu.se/record/bf7bbec6-d15d-4ee0-a12b-a30b5a0ccbe0 https://doi.org/10.1029/2021JG006688 |
genre |
Arctic Subarctic Tundra |
genre_facet |
Arctic Subarctic Tundra |
op_source |
Journal of Geophysical Research: Biogeosciences; 127(6), no e2021JG006688 (2022) ISSN: 2169-8953 |
op_relation |
https://lup.lub.lu.se/record/bf7bbec6-d15d-4ee0-a12b-a30b5a0ccbe0 http://dx.doi.org/10.1029/2021JG006688 scopus:85132948478 pmid:35865237 |
op_doi |
https://doi.org/10.1029/2021JG006688 |
container_title |
Journal of Geophysical Research: Biogeosciences |
container_volume |
127 |
container_issue |
6 |
_version_ |
1799474948235853824 |