Volatile organic compound emission in tundra shrubs : Dependence on species characteristics and the near-surface environment
Simin, Tihomir ; Tang, Jing LU
; Holst, Thomas
LU
and Rinnan, Riikka
(2021)
In Environmental and Experimental Botany
184.
- Abstract
Temperature is one of the key abiotic factors during the life of plants, especially in the Arctic region which is currently experiencing rapid climate change. We evaluated plant traits and environmental variables determining leaf temperature in tundra shrubs and volatile organic compound (VOC) emissions with field measurements on deciduous tundra shrubs, Salix myrsinites and Betula nana, and evergreen Cassiope tetragona and Rhododendron lapponicum. Higher leaf-to-air temperature difference was observed in evergreen, compared to deciduous shrubs. Evergreen shrubs also showed continuously increasing photosynthesis with increasing temperature, suggesting high thermal tolerance. For the deciduous species, the optimum temperature for net... (More)
Temperature is one of the key abiotic factors during the life of plants, especially in the Arctic region which is currently experiencing rapid climate change. We evaluated plant traits and environmental variables determining leaf temperature in tundra shrubs and volatile organic compound (VOC) emissions with field measurements on deciduous tundra shrubs, Salix myrsinites and Betula nana, and evergreen Cassiope tetragona and Rhododendron lapponicum. Higher leaf-to-air temperature difference was observed in evergreen, compared to deciduous shrubs. Evergreen shrubs also showed continuously increasing photosynthesis with increasing temperature, suggesting high thermal tolerance. For the deciduous species, the optimum temperature for net photosynthesis was between our measurement temperatures of 24 °C and 38 °C. Air temperature and vapor pressure deficit were the most important variables influencing leaf temperature and VOC emissions in all the studied plants, along with stomatal density and specific leaf area in the deciduous shrubs. Using climate data and emission factors from our measurements, we modelled total seasonal tundra shrub VOC emissions of 0.3–2.3 g m−2 over the main growing season. Our results showed higher-than-expected temperature optima for photosynthesis and VOC emission and demonstrated the relative importance of plant traits and local environments in determining leaf temperature and VOC emissions in a subarctic tundra.
(Less)
- author
- Simin, Tihomir
; Tang, Jing
LU
; Holst, Thomas
LU
and Rinnan, Riikka
- organization
- publishing date
- 2021-04
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Betula nana, Cassiope tetragona, Leaf temperature, MEGAN, Photosynthesis, Rhododendron lapponicum, Salix myrsinites, Tundra, VOC
- in
- Environmental and Experimental Botany
- volume
- 184
- article number
- 104387
- pages
- 13 pages
- publisher
- Elsevier
- external identifiers
-
- pmid:33814646
- scopus:85099614939
- ISSN
- 0098-8472
- DOI
- 10.1016/j.envexpbot.2021.104387
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: This work was supported by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 771012) and the Danish National Research Foundation (Center for Permafrost, CENPERM DNRF100). Jing Tang was financially supported by European Union's Horizon 2020 research and innovation programme under the Marie Sk?odowska-Curie grant agreement No. 707187 and FORMAS grant (No. 2016-01580). We thank Abisko Scientific Research Station for being able to use their excellent facilities. We appreciate Prof. Alex Guenther's instructions on the MEGAN model setup. We would also like to thank Marios Vazakas for the help in fieldwork preparation, Trine Mariager and Nanna Schr?der Baggesen for assistance in data collection, and Tatjana Simin for language revision. Publisher Copyright: © 2021 The Author(s)
- id
- 19fba899-f030-4d83-b180-2ee6433c80a0
- date added to LUP
- 2021-12-07 14:09:20
- date last changed
- 2024-07-14 00:34:40
@article{19fba899-f030-4d83-b180-2ee6433c80a0,
abstract = {{<p>Temperature is one of the key abiotic factors during the life of plants, especially in the Arctic region which is currently experiencing rapid climate change. We evaluated plant traits and environmental variables determining leaf temperature in tundra shrubs and volatile organic compound (VOC) emissions with field measurements on deciduous tundra shrubs, Salix myrsinites and Betula nana, and evergreen Cassiope tetragona and Rhododendron lapponicum. Higher leaf-to-air temperature difference was observed in evergreen, compared to deciduous shrubs. Evergreen shrubs also showed continuously increasing photosynthesis with increasing temperature, suggesting high thermal tolerance. For the deciduous species, the optimum temperature for net photosynthesis was between our measurement temperatures of 24 °C and 38 °C. Air temperature and vapor pressure deficit were the most important variables influencing leaf temperature and VOC emissions in all the studied plants, along with stomatal density and specific leaf area in the deciduous shrubs. Using climate data and emission factors from our measurements, we modelled total seasonal tundra shrub VOC emissions of 0.3–2.3 g m<sup>−2</sup> over the main growing season. Our results showed higher-than-expected temperature optima for photosynthesis and VOC emission and demonstrated the relative importance of plant traits and local environments in determining leaf temperature and VOC emissions in a subarctic tundra.</p>}},
author = {{Simin, Tihomir and Tang, Jing and Holst, Thomas and Rinnan, Riikka}},
issn = {{0098-8472}},
keywords = {{Betula nana; Cassiope tetragona; Leaf temperature; MEGAN; Photosynthesis; Rhododendron lapponicum; Salix myrsinites; Tundra; VOC}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Environmental and Experimental Botany}},
title = {{Volatile organic compound emission in tundra shrubs : Dependence on species characteristics and the near-surface environment}},
url = {{http://dx.doi.org/10.1016/j.envexpbot.2021.104387}},
doi = {{10.1016/j.envexpbot.2021.104387}},
volume = {{184}},
year = {{2021}},
}