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Climate change-induced vegetation change as a driver of increased subarctic biogenic volatile organic compound emissions
Emissions of biogenic volatile organic compounds (BVOCs) have been earlier shown to be highly temperature sensitive in subarctic ecosystems. As these ecosystems experience rapidly advancing pronounced climate warming, we aimed to investigate how warming affects the BVOC emissions in the long term (u...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley & Sons, Ltd
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4676918/ https://www.ncbi.nlm.nih.gov/pubmed/25994223 http://dx.doi.org/10.1111/gcb.12953 |
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author | Valolahti, Hanna Kivimäenpää, Minna Faubert, Patrick Michelsen, Anders Rinnan, Riikka |
author_facet | Valolahti, Hanna Kivimäenpää, Minna Faubert, Patrick Michelsen, Anders Rinnan, Riikka |
author_sort | Valolahti, Hanna |
collection | PubMed |
description | Emissions of biogenic volatile organic compounds (BVOCs) have been earlier shown to be highly temperature sensitive in subarctic ecosystems. As these ecosystems experience rapidly advancing pronounced climate warming, we aimed to investigate how warming affects the BVOC emissions in the long term (up to 13 treatment years). We also aimed to assess whether the increased litterfall resulting from the vegetation changes in the warming subarctic would affect the emissions. The study was conducted in a field experiment with factorial open-top chamber warming and annual litter addition treatments on subarctic heath in Abisko, northern Sweden. After 11 and 13 treatment years, BVOCs were sampled from plant communities in the experimental plots using a push–pull enclosure technique and collection into adsorbent cartridges during the growing season and analyzed with gas chromatography–mass spectrometry. Plant species coverage in the plots was analyzed by the point intercept method. Warming by 2 °C caused a 2-fold increase in monoterpene and 5-fold increase in sesquiterpene emissions, averaged over all measurements. When the momentary effect of temperature was diminished by standardization of emissions to a fixed temperature, warming still had a significant effect suggesting that emissions were also indirectly increased. This indirect increase appeared to result from increased plant coverage and changes in vegetation composition. The litter addition treatment also caused significant increases in the emission rates of some BVOC groups, especially when combined with warming. The combined treatment had both the largest vegetation changes and the highest BVOC emissions. The increased emissions under litter addition were probably a result of a changed vegetation composition due to alleviated nutrient limitation and stimulated microbial production of BVOCs. We suggest that the changes in the subarctic vegetation composition induced by climate warming will be the major factor indirectly affecting the BVOC emission potentials and composition. |
format | Online Article Text |
id | pubmed-4676918 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | John Wiley & Sons, Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-46769182015-12-20 Climate change-induced vegetation change as a driver of increased subarctic biogenic volatile organic compound emissions Valolahti, Hanna Kivimäenpää, Minna Faubert, Patrick Michelsen, Anders Rinnan, Riikka Glob Chang Biol Primary Research Articles Emissions of biogenic volatile organic compounds (BVOCs) have been earlier shown to be highly temperature sensitive in subarctic ecosystems. As these ecosystems experience rapidly advancing pronounced climate warming, we aimed to investigate how warming affects the BVOC emissions in the long term (up to 13 treatment years). We also aimed to assess whether the increased litterfall resulting from the vegetation changes in the warming subarctic would affect the emissions. The study was conducted in a field experiment with factorial open-top chamber warming and annual litter addition treatments on subarctic heath in Abisko, northern Sweden. After 11 and 13 treatment years, BVOCs were sampled from plant communities in the experimental plots using a push–pull enclosure technique and collection into adsorbent cartridges during the growing season and analyzed with gas chromatography–mass spectrometry. Plant species coverage in the plots was analyzed by the point intercept method. Warming by 2 °C caused a 2-fold increase in monoterpene and 5-fold increase in sesquiterpene emissions, averaged over all measurements. When the momentary effect of temperature was diminished by standardization of emissions to a fixed temperature, warming still had a significant effect suggesting that emissions were also indirectly increased. This indirect increase appeared to result from increased plant coverage and changes in vegetation composition. The litter addition treatment also caused significant increases in the emission rates of some BVOC groups, especially when combined with warming. The combined treatment had both the largest vegetation changes and the highest BVOC emissions. The increased emissions under litter addition were probably a result of a changed vegetation composition due to alleviated nutrient limitation and stimulated microbial production of BVOCs. We suggest that the changes in the subarctic vegetation composition induced by climate warming will be the major factor indirectly affecting the BVOC emission potentials and composition. John Wiley & Sons, Ltd 2015-09 2015-05-21 /pmc/articles/PMC4676918/ /pubmed/25994223 http://dx.doi.org/10.1111/gcb.12953 Text en © 2015 The Authors. Global Change Biology Published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/4.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Primary Research Articles Valolahti, Hanna Kivimäenpää, Minna Faubert, Patrick Michelsen, Anders Rinnan, Riikka Climate change-induced vegetation change as a driver of increased subarctic biogenic volatile organic compound emissions |
title | Climate change-induced vegetation change as a driver of increased subarctic biogenic volatile organic compound emissions |
title_full | Climate change-induced vegetation change as a driver of increased subarctic biogenic volatile organic compound emissions |
title_fullStr | Climate change-induced vegetation change as a driver of increased subarctic biogenic volatile organic compound emissions |
title_full_unstemmed | Climate change-induced vegetation change as a driver of increased subarctic biogenic volatile organic compound emissions |
title_short | Climate change-induced vegetation change as a driver of increased subarctic biogenic volatile organic compound emissions |
title_sort | climate change-induced vegetation change as a driver of increased subarctic biogenic volatile organic compound emissions |
topic | Primary Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4676918/ https://www.ncbi.nlm.nih.gov/pubmed/25994223 http://dx.doi.org/10.1111/gcb.12953 |
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