Screening of 18 Mediterranean plant species for volatile organic compound emissions

Owen, Susan M.; Boissard, Christophe; Street, R. A.; Duckham, S.C.; Csiky, Olav; Hewitt, C. Nicholas

doi:10.1016/s1352-2310(97)00078-2

Cited by 200 publications

(133 citation statements)

References 19 publications

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“…PTR-TOF-MS operating in H 3 O + mode detects isoprene at the same m/z as the fragment of methyl-butenol (m/z 69.070), 39 a compound emitted from pines in western North America, 40 whereas methyl-butenol was not found in Mediterranean stone pines. 3 Moreover, no significant methyl-butenol signal at the protonated mass m/z 87.081 was found, suggesting no emission of this compound by Mediterranean vegetation. PTR-TOF-MS also allowed calculation of BEF for the main oxygenated BVOC including acetaldehyde, acetone and methanol, with emissions of 125, 157, 91 μg m −2 h −1 , respectively ( Table 2).…”

Section: ■ Materials and Methodsmentioning

confidence: 94%

Observations of Diurnal to Weekly Variations of Monoterpene-Dominated Fluxes of Volatile Organic Compounds from Mediterranean Forests: Implications for Regional Modeling

Fares

Schnitzhofer

Jiang

et al. 2013

Environ. Sci. Technol.

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The Estate of Castelporziano (Rome, Italy) hosts many ecosystems representative of Mediterranean vegetation, especially holm oak and pine forests and dune vegetation. In this work, basal emission factors (BEFs) of biogenic volatile organic compounds (BVOCs) obtained by Eddy Covariance in a field campaign using a proton transfer reaction−time-of-flight−mass spectrometer (PTR-TOF-MS) were compared to BEFs reported in previous studies that could not measure fluxes in real-time. Globally, broadleaf forests are dominated by isoprene emissions, but these Mediterranean ecosystems are dominated by strong monoterpene emitters, as shown by the new BEFs. The original and new BEFs were used to parametrize the model of emissions of gases and aerosols from nature (MEGAN v2.1), and model outputs were compared with measured fluxes. Results showed good agreement between modeled and measured fluxes when a model was used to predict radiative transfer and energy balance across the canopy. We then evaluated whether changes in BVOC emissions can affect the chemistry of the atmosphere and climate at a regional level. MEGAN was run together with the land surface model (community land model, CLM v4.0) of the community earth system model (CESM v1.0). Results highlighted that tropospheric ozone concentration and air temperature predicted from the model are sensitive to the magnitude of BVOC emissions, thus demonstrating the importance of adopting the proper BEF values for model parametrization.

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Section: ■ Materials and Methodsmentioning

confidence: 94%

Observations of Diurnal to Weekly Variations of Monoterpene-Dominated Fluxes of Volatile Organic Compounds from Mediterranean Forests: Implications for Regional Modeling

Fares

Schnitzhofer

Jiang

et al. 2013

Environ. Sci. Technol.

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“…Analysis showed that there was negligible loss of isoprene and monoterpenes. Analytical methods employed by the LAN laboratory are described in more detail in Owen et al (1997).…”

Section: Leaf Measurementsmentioning

confidence: 99%

Volatile organic compounds from vegetation in southern Yunnan Province, China: Emission rates and some potential regional implications

Geron

Owen

Guenther

et al. 2006

Atmospheric Environment

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“…The value of b is normally taken to be 0.09 K À1 , but in fact it can vary according to species and environmental conditions (e.g. Owen et al, 1997;Street et al, 1997). To improve the fit of the G95 algorithms to some of the experimental data, parameter values were generated using non-linear regression with quasi-Newton estimation of loss function in a statistical package (Statistica, Statsoft Inc, Benelux BV).…”

Section: Modelling Emission Ratesmentioning

confidence: 99%

Light dependency of VOC emissions from selected Mediterranean plant species

Owen

Harley

Guenther

et al. 2002

Atmospheric Environment

114

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The light, temperature and stomatal conductance dependencies of volatile organic compound (VOC) emissions from ten plant species commonly found in the Mediterranean region were studied using a fully controlled leaf cuvette in the laboratory. At standard conditions of temperature and light (301C and 1000 mmol m À2 s À1 PAR), low emitting species (Arbutus unedo, Pinus halepensis, Cistus incanus, Cistus salvifolius, Rosmarinus officinalis and Thymus vulgaris) emitted between 0.1 and 5.0 mg (C) (total VOCs) g À1 dw h À1 , a medium emitter (Pinus pinea) emitted between 5 and 10 mg (C) g À1 dw h À1 and high emitters (Cistus monspeliensis, Lavendula stoechas and Quercus sp.) emitted more than 10 mg (C) g À1 dw h À1 . VOC emissions from all of the plant species investigated showed some degree of light dependency, which was distinguishable from temperature dependency. Emissions of all compounds from Quercus sp. were light dependent. Ocimene was one of several monoterpene compounds emitted by P. pinea and was strongly correlated to light. Only a fraction of monoterpene emissions from C. incanus exhibited apparent weak light dependency but emissions from this plant species were strongly correlated to temperature. Data presented here are consistent with past studies, which show that emissions are independent of stomatal conductance. These results may allow more accurate predictions of monoterpene emission fluxes from the Mediterranean region to be made. r

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Screening of 18 Mediterranean plant species for volatile organic compound emissions

Cited by 200 publications

References 19 publications

Observations of Diurnal to Weekly Variations of Monoterpene-Dominated Fluxes of Volatile Organic Compounds from Mediterranean Forests: Implications for Regional Modeling

Observations of Diurnal to Weekly Variations of Monoterpene-Dominated Fluxes of Volatile Organic Compounds from Mediterranean Forests: Implications for Regional Modeling

Volatile organic compounds from vegetation in southern Yunnan Province, China: Emission rates and some potential regional implications

Light dependency of VOC emissions from selected Mediterranean plant species

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