Emissions of biogenic volatile organic compounds from<i>Fraxinus excelsior</i>and<i>Quercus robur</i>under ambient conditions in Flanders (Belgium)

Pokorska, Olga; Dewulf, Jo; Amelynck, Crist; Schoon, Niels; Joó, Éva; Šimpraga, Maja; Bloemen, Jasper; Steppe, Kathy; Langenhove, Herman Van

doi:10.1080/03067319.2011.581757

Cited by 15 publications

(17 citation statements)

References 48 publications

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“…The English oak clones in this study had emission rates between 3.5 and 18.3 µg gdw 1 h −1 at a light level of 1000 µmol m −2 s −1 and a set temperature range of 18-21 • C. The first oak had a statistically significant increase of the total emission across light levels, whilst the emission rate of the second oak saturated at 1000 µmol m −2 s −1 . These emission rates are in line with the standardized emission rates reported by previous studies (Isidorov et al, 1985;Kesselmeier and Staudt, 1999;Pokorska et al, 2012;Persson et al, 2016) (Table 1). Between one and seven compounds were detected at the measured light levels and the detected compounds were isoprene, tricyclene, α-pinene, camphene, 3-carene, limonene and eucalyptol.…”

Section: Discussionsupporting

confidence: 80%

“…The European tree species presented here have distinct emission patterns: English oak is a known high isoprene emitter, European beech mainly emits MTs such as sabinene and Norway spruce is known to emit both isoprene and MTs Ghirardo et al, 2010;Pokorska et al, 2012). Between 96 and 99 % of the total emission for oak consisted of isoprene, followed by MTs such as limonene and α-pinene.…”

Section: Emission Pattern Variation and Shade Adaptation Of The Leavementioning

confidence: 99%

“…These species were chosen as they are some of the most common tree species growing in large areas within Europe (Skjøth et al, 2008) and have reported BVOC emission levels exceeding 1 µg gdw 1 h −1 (Kesselmeier et al, 1999;Dindorf et al, 2006;Holzke et al, 2006;Pokorska et al, 2012). The study aims to (i) analyse how emissions of different BVOCs respond to changing light levels to identify light-dependent fractions for each compound and (ii) investigate whether there are similar patterns between observed BVOC emission, photosynthetic rates and stomatal conductance.…”

Section: Y Van Meeningen Et Al: Isoprenoid Emission Response To Chamentioning

confidence: 99%

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Isoprenoid emission response to changing light conditions of English oak, European beech and Norway spruce

et al. 2017

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Abstract. Light is an important environmental factor controlling biogenic volatile organic compound (BVOC) emissions, but in natural conditions its impact is hard to separate from other influential factors such as temperature. We studied the light response of foliar BVOC emissions, photosynthesis and stomatal conductance on three common European tree species, namely English oak (Quercus robur), European beech (Fagus sylvatica) and two provenances of Norway spruce (Picea abies) in Taastrup, Denmark. Leaf scale measurements were performed on the lowest positioned branches of the tree in July 2015. Light intensity was increased in four steps (0, 500, 1000 and 1500 µmol m −2 s −1 ), whilst other chamber conditions such as temperature, humidity and CO 2 levels were fixed.Whereas the emission rate differed between individuals of the same species, the relative contributions of compounds to the total isoprenoid emission remained similar. Whilst some compounds were species specific, the compounds α-pinene, camphene, 3-carene, limonene and eucalyptol were emitted by all of the measured tree species. Some compounds, like isoprene and sabinene, showed an increasing emission response with increasing light intensity, whereas other compounds, like camphene, had no significant emission response to light for most of the measured trees. English oak and European beech showed high light-dependent emission fractions from isoprene and sabinene, but other emitted compounds were light independent. For the two provenances of Norway spruce, the compounds α-pinene, 3-carene and eucalyptol showed high light-dependent fractions for many of the measured trees. This study highlights differences between compound emissions in their response to a change in light and a possible light independence for certain compounds, which might be valid for a wider range of tree species. This information could be of importance when improving emission models and to further emphasize the discussion regarding light or temperature dependencies for individual compounds across species.

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Section: Discussionsupporting

confidence: 80%

Section: Emission Pattern Variation and Shade Adaptation Of The Leavementioning

confidence: 99%

Section: Y Van Meeningen Et Al: Isoprenoid Emission Response To Chamentioning

confidence: 99%

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Isoprenoid emission response to changing light conditions of English oak, European beech and Norway spruce

et al. 2017

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“…Leaf-level emission potentials vary considerably between the top and bottom of the canopy and have been shown to range between a factor of 10 (Aydin et al, 2014;van Meeningen et al, 2016) and 100 (e.g. Pokorska et al, 2011;Winer et al, 1983) for the same species. Therefore, the leaf-level emission inventory compiled by Keenan et al (2009) may not always give IEPs representative of the canopy average flux, which is directly observed by topdown micrometeorological approaches.…”

Section: Comparison With Literature Valuesmentioning

confidence: 99%

Isoprene emission potentials from European oak forests derived from canopy flux measurements: an assessment of uncertainties and inter-algorithm variability

et al. 2017

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Abstract. Biogenic emission algorithms predict that oak forests account for ∼ 70 % of the total European isoprene budget. Yet the isoprene emission potentials (IEPs) that underpin these model estimates are calculated from a very limited number of leaf-level observations and hence are highly uncertain. Increasingly, micrometeorological techniques such as eddy covariance are used to measure whole-canopy fluxes directly, from which isoprene emission potentials can be calculated. Here, we review five observational datasets of isoprene fluxes from a range of oak forests in the UK, Italy and France. We outline procedures to correct the measured net fluxes for losses from deposition and chemical flux divergence, which were found to be on the order of 5-8 and 4-5 %, respectively. The corrected observational data were used to derive isoprene emission potentials at each site in a two-step process. Firstly, six commonly used emission algorithms were inverted to back out time series of isoprene emission potential, and then an "average" isoprene emission potential was calculated for each site with an associated uncertainty. We used these data to assess how the derived emission potentials change depending upon the specific emission algorithm used and, importantly, on the particular approach adopted to derive an average site-specific emission potential. Our results show that isoprene emission potentials can vary by up to a factor of 4 depending on the specific algorithm used and whether or not it is used in a "big-leaf" or "canopy environment (CE) model" format. When using the same algorithm, the calculated average isoprene emission potential was found to vary by as much as 34 % depending on how the average was derived. Using a consistent approach with version 2.1 of the Model for Emissions of Gases and Aerosols from Nature (MEGAN), we derive new ecosystemscale isoprene emission potentials for the five measurement sites: Alice Holt, UK (10 500 ± 2500 µg m −2 h −1 ); Bosco Fontana, Italy (1610 ± 420 µg m −2 h −1 ); CastelPublished by Copernicus Publications on behalf of the European Geosciences Union. B. Langford et al.: Isoprene emission potentials from European oak forestsporziano, Italy (121 ± 15 µg m −2 h −1 ); Ispra, Italy (7590 ± 1070 µg m −2 h −1 ); and the Observatoire de Haute Provence, France (7990 ± 1010 µg m −2 h −1 ). Ecosystemscale isoprene emission potentials were then extrapolated to the leaf-level and compared to previous leaf-level measurements for Quercus robur and Quercus pubescens, two species thought to account for 50 % of the total European isoprene budget. The literature values agreed closely with emission potentials calculated using the G93 algorithm, which were 85 ± 75 and 78 ± 25 µg g −1 h −1 for Q. robur and Q. pubescens, respectively. By contrast, emission potentials calculated using the G06 algorithm, the same algorithm used in a previous study to derive the European budget, were significantly lower, which we attribute to the influence of past light and temperature conditions. Adopting these new G0...

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“…Although isoprenes and oxygenated compounds are of importance among the BVOCs in addition to terpenes, monoterpenes and isoprenes are the major compounds that contribute to substantial emission levels to the atmosphere (Guenther 2006, Peñuelas and Staudt 2010, Pokorska et al 2012, Aydin et al 2014. It has been reported that monoterpenes are mostly emitted by coniferous species while broad-leaved trees mainly emit isoprenes (Zimmerman 1979, Warneck 1988, Bao et al 2008.…”

Section: Introductionmentioning

confidence: 99%

Characteristics and distribution of terpenes in South Korean forests

et al. 2017

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The importance of forests continues to increase throughout the world, and one of the reasons is that a forest is a major place to emit terpenes, which have been reported to be beneficial to human health. In South Korea, forests occupy about 64% of the total land area and consist mainly of pine and oak trees. Since only a limited number of forests have been analyzed to date, a comprehensive understanding of terpenes emitted from regional forests remains in its infancy in Korea. Here, to gain insights into terpenes from regional forests located in South Korea, we review the characteristics of Korean forests and recent studies on major terpenes emitted from regional forests as well as from native trees dominant in South Korea. We also discuss meteorological factors that affect the terpene emissions in Korean forests. In conclusion, 18 types of terpenes were detected in Korean forests and their compositions in different forests are largely dependent on the dominant plant species in the forest. Moreover, terpene emissions in Korean forests are affected by various environmental factors, including temperature, amount and duration of daylight, season, and age of trees. To improve the understanding of the characteristics of terpene distribution, more studies are required on the terpene production of Korean forests in various regions.

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Emissions of biogenic volatile organic compounds fromFraxinus excelsiorandQuercus roburunder ambient conditions in Flanders (Belgium)

Cited by 15 publications

References 48 publications

Isoprenoid emission response to changing light conditions of English oak, European beech and Norway spruce

Isoprenoid emission response to changing light conditions of English oak, European beech and Norway spruce

Isoprene emission potentials from European oak forests derived from canopy flux measurements: an assessment of uncertainties and inter-algorithm variability

Characteristics and distribution of terpenes in South Korean forests

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