Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs

Simin, Tihomir; Davie‐Martin, Cleo L.; Petersen, Jesper; Høye, Toke T.; Rinnan, Riikka

doi:10.1016/j.scitotenv.2022.155783

Cited by 8 publications

(10 citation statements)

References 79 publications

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“…The ambient temperatures did not differ between the first measurement in early June and the last measurement in late July. However, the emissions of GLVs, oxygenated VOCs, oxygenated monoterpenes, and homoterpenes were 63%–94% lower in the last measurement compared to the first, which coincides with a 40% decline in B. glandulosa GLV emissions over a similar time frame reported in another study at the same site (Simin et al., 2022). The decline in the emission rates at the end of the measurement period is likely associated with leaf senescence.…”

Section: Discussionsupporting

confidence: 81%

“…For the homoterpenes, oxygenated monoterpenes, and isoprene (a minor compound in the birch VOC profile), emission rates were greater at high elevation, whereas the emissions of GLVs, hydrocarbons, oxygenated VOCs, sesquiterpenes, and oxygenated sesquiterpenes, were similar overall at high and low elevations. Simin et al (2022) also found that GLV emission rates of dwarf birch growing outside the experimental plots on the same site were significantly greater at high elevation compared to low elevation, and negatively correlated with soil moisture content. However, the diversity of individual VOCs was greater at low than high elevation.…”

Section: Seasonal Effects and Elevational Differences In Voc Emission...mentioning

confidence: 67%

“…Simin et al. (2022) also found that GLV emission rates of dwarf birch growing outside the experimental plots on the same site were significantly greater at high elevation compared to low elevation, and negatively correlated with soil moisture content. However, the diversity of individual VOCs was greater at low than high elevation.…”

Section: Discussionmentioning

confidence: 86%

“…In short, cartridges were desorbed at 250°C for 10 min (TD100-xr, Markes International Ltd, Llantrisant, UK) and introduced to an HP-5 capillary column (50 m length, 0.2 mm diameter, 0.33 μm film thickness, Agilent Technologies, Santa Clara, CA) with a split flow of 20 ml min −1 . VOCs were separated and analyzed as in Simin et al (2022) and Rieksta et al (2023a). Chromatograms were analyzed using PARADISe v. 6.0 software (https://ucphchemometrics.com); Johnsen et al, 2017;Quintanilla-Casas et al, 2022).…”

Section: Voc Analysismentioning

confidence: 99%

“…Constitutive VOC emissions vary between species (Rinnan et al, 2011;Schollert et al, 2017Schollert et al, , 2017Schollert et al, , 2017Simin et al, 2021Simin et al, , 2022, within species (Yassaa et al, 2012), and temporally (Baggesen et al, 2021;Llusià et al, 2010;Ryde et al, 2021). Many factors control VOC emissions, including abiotic factors, such as temperature, light intensity, and soil moisture (Niinemets et al, 2004), as well as the physiological and functional properties (traits) of plants.…”

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confidence: 99%

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Seasonal and Elevational Variability in Dwarf Birch VOC Emissions in Greenlandic Tundra

Rieksta,

Li,

Davie‐Martin

et al. 2023

JGR Biogeosciences

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Rising temperatures amplify biogenic volatile organic compound (VOC) emissions from Arctic vegetation, causing feedbacks to the climate system. Changes in climate also alter plant physiology and vegetation composition, all of which can influence VOC emissions. Moreover, leaf development and biotic stresses cause highly variable emissions during the growing season. Therefore, linking VOC emissions with plant traits and tracking responses to climate change might provide better understanding of VOC emission regulation under future conditions. We measured VOC emissions and other plant traits in dwarf birch (Betula glandulosa) at two elevations in Narsarsuaq, South Greenland. The measurements were performed in warming experiments that have run since 2016. We collected VOCs using the branch enclosure method from early June until late July 2019 (n = 200). Emissions of green leaf volatiles (GLVs), oxygenated monoterpenes (oMTs), and homoterpenes followed a seasonal trend. VOC emission rates and the diversity of the VOC blend decreased at the end of the measurement period. Differences in VOC emission rates between elevations were pronounced early in the season. Majority of the traits did not explain the variation in VOC emissions. We show strong seasonal variability in VOC emissions within the growing season, which is likely driven by leaf phenology. While the diversity of VOCs was greater at the milder low‐elevation site, VOC emission rates were higher or similar at the harsher high‐elevation site, showing stronger VOC emission potentials than previously assumed. Seasonal variations in the emissions of VOCs are crucial for accurate predictions of current and future VOC emissions from arctic ecosystems.

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Section: Discussionsupporting

confidence: 81%

Section: Seasonal Effects and Elevational Differences In Voc Emission...mentioning

confidence: 67%

Section: Discussionmentioning

confidence: 86%

Section: Voc Analysismentioning

confidence: 99%

mentioning

confidence: 99%

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Seasonal and Elevational Variability in Dwarf Birch VOC Emissions in Greenlandic Tundra

Rieksta,

Li,

Davie‐Martin

et al. 2023

JGR Biogeosciences

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Volatile responses of dwarf birch to mimicked insect herbivory and experimental warming at two elevations in Greenlandic tundra

Rieksta

Davie‐Martin

et al. 2023

Plant Enviro Interactions

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Plants release a complex blend of volatile organic compounds (VOCs) in response to stressors. VOC emissions vary between contrasting environments and increase with insect herbivory and rising temperatures. However, the joint effects of herbivory and warming on plant VOC emissions are understudied, particularly in high latitudes, which are warming fast and facing increasing herbivore pressure. We assessed the individual and combined effects of chemically mimicked insect herbivory, warming, and elevation on dwarf birch (Betula glandulosa) VOC emissions in high‐latitude tundra ecosystems in Narsarsuaq, South Greenland. We hypothesized that VOC emissions and compositions would respond synergistically to warming and herbivory, with the magnitude differing between elevations. Warming increased emissions of green leaf volatiles (GLVs) and isoprene. Herbivory increased the homoterpene, (E)‐4,8‐dimethyl‐1,3,7‐nonatriene, emissions, and the response was stronger at high elevation. Warming and herbivory had synergistic effects on GLV emissions. Dwarf birch emitted VOCs at similar rates at both elevations, but the VOC blends differed between elevations. Several herbivory‐associated VOC groups did not respond to herbivory. Harsher abiotic conditions at high elevations might not limit VOC emissions from dwarf birch, and high‐elevation plants might be better at herbivory defense than assumed. The complexity of VOC responses to experimental warming, elevation, and herbivory are challenging our understanding and predictions of future VOC emissions from dwarf birch‐dominated ecosystems.

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Marginal water use efficiencies of different plant functional types along an elevation gradient in subalpine regions

Zhai,

Wang,

et al. 2024

Eur J Forest Res

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Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs

Cited by 8 publications

References 79 publications

Seasonal and Elevational Variability in Dwarf Birch VOC Emissions in Greenlandic Tundra

Seasonal and Elevational Variability in Dwarf Birch VOC Emissions in Greenlandic Tundra

Volatile responses of dwarf birch to mimicked insect herbivory and experimental warming at two elevations in Greenlandic tundra

Marginal water use efficiencies of different plant functional types along an elevation gradient in subalpine regions

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