BVOC Emissions From a Subarctic Ecosystem, as Controlled by Insect Herbivore Pressure and Temperature
The biogenic volatile organic compounds, BVOCs have a central role in ecosystem-atmosphere interactions. High-latitude ecosystems are facing increasing temperatures and insect herbivore pressure, which may affect their BVOC emission rates, but evidence and predictions of changes remain scattered. We...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/346003 2024-01-07T09:46:53+01:00 BVOC Emissions From a Subarctic Ecosystem, as Controlled by Insect Herbivore Pressure and Temperature Ghimire, Rajendra P. Silfver, Tarja Myller, Kristiina Oksanen, Elina Holopainen, Jarmo K. Mikola, Juha Ecosystems and Environment Research Programme 2022-07-08T05:47:01Z 20 application/pdf http://hdl.handle.net/10138/346003 eng eng Springer 10.1007/s10021-021-00690-0 This research was supported by the Academy of Finland (grant no. 285030 for JM, grant no. 278424 for JKH, grant no. 284931 for EO), Kone Foundation (a personal grant to TS.) and the UEF International Top-Level Research Area BORFOR. Open access funding provided by University of Eastern Finland (UEF) including Kuopio University Hospital. Ghimire , R P , Silfver , T , Myller , K , Oksanen , E , Holopainen , J K & Mikola , J 2022 , ' BVOC Emissions From a Subarctic Ecosystem, as Controlled by Insect Herbivore Pressure and Temperature ' , Ecosystems , vol. 25 , no. 4 , pp. 872-891 . https://doi.org/10.1007/s10021-021-00690-0 ORCID: /0000-0002-4336-2648/work/115592385 ORCID: /0000-0003-0619-5008/work/115596828 8904905d-fde7-45bd-b2b1-bf0e6af8c4d9 http://hdl.handle.net/10138/346003 000686446900001 cc_by openAccess info:eu-repo/semantics/openAccess BVOC emissions climate warming ecosystem-atmosphere interactions insect herbivory mountain birch Subarctic VOLATILE ORGANIC-COMPOUNDS CLIMATE-CHANGE BIOGENIC VOLATILES COMPOUND EMISSIONS AEROSOL FORMATION INCREASES TUNDRA RESISTANCE ISOPRENE GROWTH 1181 Ecology evolutionary biology Article publishedVersion 2022 ftunivhelsihelda 2023-12-14T00:11:06Z The biogenic volatile organic compounds, BVOCs have a central role in ecosystem-atmosphere interactions. High-latitude ecosystems are facing increasing temperatures and insect herbivore pressure, which may affect their BVOC emission rates, but evidence and predictions of changes remain scattered. We studied the long-term effects of + 3 degrees C warming and reduced insect herbivory (achieved through insecticide sprayings) on mid- and late summer BVOC emissions from field layer vegetation, supplemented with birch saplings, and the underlying soil in Subarctic mountain birch forest in Finland in 2017-2018. Reduced insect herbivory decreased leaf damage by 58-67% and total ecosystem BVOC emissions by 44-72%. Of the BVOC groups, total sesquiterpenes had 70-80% lower emissions with reduced herbivory, and in 2017 the decrease was greater in warmed plots (89% decrease) than in ambient plots (34% decrease). While non-standardized total BVOC, monoterpene, sesquiterpene and GLV emissions showed instant positive responses to increasing chamber air temperature in midsummer samplings, the long-term warming treatment effects on standardized emissions mainly appeared as changes in the compound structure of BVOC blends and varied with compounds and sampling times. Our results suggest that the effects of climate warming on the total quantity of BVOC emissions will in Subarctic ecosystems be, over and above the instant temperature effects, mediated through changes in insect herbivore pressure rather than plant growth. If insect herbivore numbers will increase as predicted under climate warming, our results forecast herbivory-induced increases in the quantity of Subarctic BVOC emissions. Peer reviewed Article in Journal/Newspaper Subarctic Tundra HELDA – University of Helsinki Open Repository Ecosystems 25 4 872 891 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
BVOC emissions climate warming ecosystem-atmosphere interactions insect herbivory mountain birch Subarctic VOLATILE ORGANIC-COMPOUNDS CLIMATE-CHANGE BIOGENIC VOLATILES COMPOUND EMISSIONS AEROSOL FORMATION INCREASES TUNDRA RESISTANCE ISOPRENE GROWTH 1181 Ecology evolutionary biology |
spellingShingle |
BVOC emissions climate warming ecosystem-atmosphere interactions insect herbivory mountain birch Subarctic VOLATILE ORGANIC-COMPOUNDS CLIMATE-CHANGE BIOGENIC VOLATILES COMPOUND EMISSIONS AEROSOL FORMATION INCREASES TUNDRA RESISTANCE ISOPRENE GROWTH 1181 Ecology evolutionary biology Ghimire, Rajendra P. Silfver, Tarja Myller, Kristiina Oksanen, Elina Holopainen, Jarmo K. Mikola, Juha BVOC Emissions From a Subarctic Ecosystem, as Controlled by Insect Herbivore Pressure and Temperature |
topic_facet |
BVOC emissions climate warming ecosystem-atmosphere interactions insect herbivory mountain birch Subarctic VOLATILE ORGANIC-COMPOUNDS CLIMATE-CHANGE BIOGENIC VOLATILES COMPOUND EMISSIONS AEROSOL FORMATION INCREASES TUNDRA RESISTANCE ISOPRENE GROWTH 1181 Ecology evolutionary biology |
description |
The biogenic volatile organic compounds, BVOCs have a central role in ecosystem-atmosphere interactions. High-latitude ecosystems are facing increasing temperatures and insect herbivore pressure, which may affect their BVOC emission rates, but evidence and predictions of changes remain scattered. We studied the long-term effects of + 3 degrees C warming and reduced insect herbivory (achieved through insecticide sprayings) on mid- and late summer BVOC emissions from field layer vegetation, supplemented with birch saplings, and the underlying soil in Subarctic mountain birch forest in Finland in 2017-2018. Reduced insect herbivory decreased leaf damage by 58-67% and total ecosystem BVOC emissions by 44-72%. Of the BVOC groups, total sesquiterpenes had 70-80% lower emissions with reduced herbivory, and in 2017 the decrease was greater in warmed plots (89% decrease) than in ambient plots (34% decrease). While non-standardized total BVOC, monoterpene, sesquiterpene and GLV emissions showed instant positive responses to increasing chamber air temperature in midsummer samplings, the long-term warming treatment effects on standardized emissions mainly appeared as changes in the compound structure of BVOC blends and varied with compounds and sampling times. Our results suggest that the effects of climate warming on the total quantity of BVOC emissions will in Subarctic ecosystems be, over and above the instant temperature effects, mediated through changes in insect herbivore pressure rather than plant growth. If insect herbivore numbers will increase as predicted under climate warming, our results forecast herbivory-induced increases in the quantity of Subarctic BVOC emissions. Peer reviewed |
author2 |
Ecosystems and Environment Research Programme |
format |
Article in Journal/Newspaper |
author |
Ghimire, Rajendra P. Silfver, Tarja Myller, Kristiina Oksanen, Elina Holopainen, Jarmo K. Mikola, Juha |
author_facet |
Ghimire, Rajendra P. Silfver, Tarja Myller, Kristiina Oksanen, Elina Holopainen, Jarmo K. Mikola, Juha |
author_sort |
Ghimire, Rajendra P. |
title |
BVOC Emissions From a Subarctic Ecosystem, as Controlled by Insect Herbivore Pressure and Temperature |
title_short |
BVOC Emissions From a Subarctic Ecosystem, as Controlled by Insect Herbivore Pressure and Temperature |
title_full |
BVOC Emissions From a Subarctic Ecosystem, as Controlled by Insect Herbivore Pressure and Temperature |
title_fullStr |
BVOC Emissions From a Subarctic Ecosystem, as Controlled by Insect Herbivore Pressure and Temperature |
title_full_unstemmed |
BVOC Emissions From a Subarctic Ecosystem, as Controlled by Insect Herbivore Pressure and Temperature |
title_sort |
bvoc emissions from a subarctic ecosystem, as controlled by insect herbivore pressure and temperature |
publisher |
Springer |
publishDate |
2022 |
url |
http://hdl.handle.net/10138/346003 |
genre |
Subarctic Tundra |
genre_facet |
Subarctic Tundra |
op_relation |
10.1007/s10021-021-00690-0 This research was supported by the Academy of Finland (grant no. 285030 for JM, grant no. 278424 for JKH, grant no. 284931 for EO), Kone Foundation (a personal grant to TS.) and the UEF International Top-Level Research Area BORFOR. Open access funding provided by University of Eastern Finland (UEF) including Kuopio University Hospital. Ghimire , R P , Silfver , T , Myller , K , Oksanen , E , Holopainen , J K & Mikola , J 2022 , ' BVOC Emissions From a Subarctic Ecosystem, as Controlled by Insect Herbivore Pressure and Temperature ' , Ecosystems , vol. 25 , no. 4 , pp. 872-891 . https://doi.org/10.1007/s10021-021-00690-0 ORCID: /0000-0002-4336-2648/work/115592385 ORCID: /0000-0003-0619-5008/work/115596828 8904905d-fde7-45bd-b2b1-bf0e6af8c4d9 http://hdl.handle.net/10138/346003 000686446900001 |
op_rights |
cc_by openAccess info:eu-repo/semantics/openAccess |
container_title |
Ecosystems |
container_volume |
25 |
container_issue |
4 |
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872 |
op_container_end_page |
891 |
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1787428811090952192 |