Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs
The northernmost regions of our planet experience twice the rate of climate warming compared to the global average. Despite the currently low air temperatures, tundra shrubs are known to exhibit high leaf temperatures and are increasing in height due to warming, but it is unclear how the increase in...
Published in: | Science of The Total Environment |
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Language: | English |
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2022
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Online Access: | https://curis.ku.dk/portal/da/publications/impacts-of-elevation-on-plant-traits-and-volatile-organic-compound-emissions-in-deciduous-tundra-shrubs(4614c95e-fb72-4dda-a975-815a64a38051).html https://doi.org/10.1016/j.scitotenv.2022.155783 https://curis.ku.dk/ws/files/310424141/1_s2.0_S0048969722028807_main.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/4614c95e-fb72-4dda-a975-815a64a38051 2024-06-09T07:46:28+00:00 Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs Simin, Tihomir Davie-Martin, Cleo L. Petersen, Julie Høye, Toke T. Rinnan, Riikka 2022 application/pdf https://curis.ku.dk/portal/da/publications/impacts-of-elevation-on-plant-traits-and-volatile-organic-compound-emissions-in-deciduous-tundra-shrubs(4614c95e-fb72-4dda-a975-815a64a38051).html https://doi.org/10.1016/j.scitotenv.2022.155783 https://curis.ku.dk/ws/files/310424141/1_s2.0_S0048969722028807_main.pdf eng eng info:eu-repo/semantics/openAccess Simin , T , Davie-Martin , C L , Petersen , J , Høye , T T & Rinnan , R 2022 , ' Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs ' , Science of the Total Environment , vol. 837 , 155783 . https://doi.org/10.1016/j.scitotenv.2022.155783 Betula glandulosa CO assimilation Height Leaf temperature Light Salix glauca Sex Soil moisture Tundra VOC article 2022 ftcopenhagenunip https://doi.org/10.1016/j.scitotenv.2022.155783 2024-05-16T11:29:24Z The northernmost regions of our planet experience twice the rate of climate warming compared to the global average. Despite the currently low air temperatures, tundra shrubs are known to exhibit high leaf temperatures and are increasing in height due to warming, but it is unclear how the increase in height will affect the leaf temperature. To study how temperature, soil moisture, and changes in light availability influence the physiology and emissions of climate-relevant volatile organic compounds (VOCs), we conducted a study on two common deciduous tundra shrubs, Salix glauca (separating males and females for potential effects of plant sex) and Betula glandulosa, at two elevations in South Greenland. Low-elevation Salix shrubs were 45% taller, but had 37% lower rates of net CO 2 assimilation and 63% lower rates of isoprene emission compared to high-elevation shrubs. Betula shrubs showed 40% higher stomatal conductance and 24% higher glandular trichome density, in the low-elevation valley, compared to those from the high-elevation mountain slope. Betula green leaf volatile emissions were 235% higher at high elevation compared to low elevation. Male Salix showed a distinct VOC blend and emitted 55% more oxygenated VOCs, compared to females, possibly due to plant defense mechanisms. In our light response curves, isoprene emissions increased linearly with light intensity, potentially indicating adaptation to strong light. Leaf temperature decreased with increasing Salix height, at 4 °C m −1 , which can have implications for plant physiology. However, no similar relationship was observed for B. glandulosa. Our results highlight that tundra shrub traits and VOC emissions are sensitive to temperature and light, but that local variations in soil moisture strongly interact with temperature and light responses. Our results suggest that effects of climate warming, alone, poorly predict the actual plant responses in tundra vegetation. Article in Journal/Newspaper Greenland Tundra University of Copenhagen: Research Greenland Science of The Total Environment 837 155783 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Betula glandulosa CO assimilation Height Leaf temperature Light Salix glauca Sex Soil moisture Tundra VOC |
spellingShingle |
Betula glandulosa CO assimilation Height Leaf temperature Light Salix glauca Sex Soil moisture Tundra VOC Simin, Tihomir Davie-Martin, Cleo L. Petersen, Julie Høye, Toke T. Rinnan, Riikka Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs |
topic_facet |
Betula glandulosa CO assimilation Height Leaf temperature Light Salix glauca Sex Soil moisture Tundra VOC |
description |
The northernmost regions of our planet experience twice the rate of climate warming compared to the global average. Despite the currently low air temperatures, tundra shrubs are known to exhibit high leaf temperatures and are increasing in height due to warming, but it is unclear how the increase in height will affect the leaf temperature. To study how temperature, soil moisture, and changes in light availability influence the physiology and emissions of climate-relevant volatile organic compounds (VOCs), we conducted a study on two common deciduous tundra shrubs, Salix glauca (separating males and females for potential effects of plant sex) and Betula glandulosa, at two elevations in South Greenland. Low-elevation Salix shrubs were 45% taller, but had 37% lower rates of net CO 2 assimilation and 63% lower rates of isoprene emission compared to high-elevation shrubs. Betula shrubs showed 40% higher stomatal conductance and 24% higher glandular trichome density, in the low-elevation valley, compared to those from the high-elevation mountain slope. Betula green leaf volatile emissions were 235% higher at high elevation compared to low elevation. Male Salix showed a distinct VOC blend and emitted 55% more oxygenated VOCs, compared to females, possibly due to plant defense mechanisms. In our light response curves, isoprene emissions increased linearly with light intensity, potentially indicating adaptation to strong light. Leaf temperature decreased with increasing Salix height, at 4 °C m −1 , which can have implications for plant physiology. However, no similar relationship was observed for B. glandulosa. Our results highlight that tundra shrub traits and VOC emissions are sensitive to temperature and light, but that local variations in soil moisture strongly interact with temperature and light responses. Our results suggest that effects of climate warming, alone, poorly predict the actual plant responses in tundra vegetation. |
format |
Article in Journal/Newspaper |
author |
Simin, Tihomir Davie-Martin, Cleo L. Petersen, Julie Høye, Toke T. Rinnan, Riikka |
author_facet |
Simin, Tihomir Davie-Martin, Cleo L. Petersen, Julie Høye, Toke T. Rinnan, Riikka |
author_sort |
Simin, Tihomir |
title |
Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs |
title_short |
Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs |
title_full |
Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs |
title_fullStr |
Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs |
title_full_unstemmed |
Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs |
title_sort |
impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs |
publishDate |
2022 |
url |
https://curis.ku.dk/portal/da/publications/impacts-of-elevation-on-plant-traits-and-volatile-organic-compound-emissions-in-deciduous-tundra-shrubs(4614c95e-fb72-4dda-a975-815a64a38051).html https://doi.org/10.1016/j.scitotenv.2022.155783 https://curis.ku.dk/ws/files/310424141/1_s2.0_S0048969722028807_main.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Tundra |
genre_facet |
Greenland Tundra |
op_source |
Simin , T , Davie-Martin , C L , Petersen , J , Høye , T T & Rinnan , R 2022 , ' Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs ' , Science of the Total Environment , vol. 837 , 155783 . https://doi.org/10.1016/j.scitotenv.2022.155783 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.scitotenv.2022.155783 |
container_title |
Science of The Total Environment |
container_volume |
837 |
container_start_page |
155783 |
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1801376329331900416 |