Volatile organic compounds (VOCs) emitted from 40 Mediterranean plant species:

Owen, Susan M.; Boissard, Christophe; Hewitt, C. Nicholas

doi:10.1016/s1352-2310(01)00302-8

Cited by 168 publications

(146 citation statements)

References 30 publications

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“…, respectively) for P. pinea, A. unedo, T. vulgaris, P. halepensis and Lavendula stoechas, were equivalent to field measurements of P VOC emissions from these species in Mediterranean habitats using the branch enclosure sampling technique (Owen et al, , 2001). The range of compounds constituting the major part of P VOC emissions from each plant species agreed with the expected speciation of emitted monoterpenes from these plant species (Owen et al, , 2000.…”

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confidence: 72%

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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confidence: 72%

Light dependency of VOC emissions from selected Mediterranean plant species

Owen

Harley

Guenther

et al. 2002

Atmospheric Environment

114

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“…In Europe, BVOC emissions in the Mediterranean area were extensively studied as part of the Biogenic Emissions in the Mediterranean Area (BEMA) project Ciccioli et al, 1997;Kesselmeier et al, 1997;Owen et al, , 2001Owen et al, , 2002Seufert et al, 1997;. The BEMA project focused on emissions from the Castelporziano nature reserve near Rome, Italy.…”

Section: B Davison Et Al: Bvoc Concentrations and Fluxes From Italymentioning

confidence: 99%

Concentrations and fluxes of biogenic volatile organic compounds above a Mediterranean macchia ecosystem in western Italy

et al. 2009

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Abstract. Emission rates and concentrations of biogenic volatile organic compounds (BVOCs) were measured at a Mediterranean coastal site at Castelporziano, approximately 25 km south-west of Rome, between 7 May and 3 June 2007, as part of the ACCENT-VOCBAS field campaign on biosphere-atmosphere interactions. Concentrations and emission rates were measured using the disjunct eddy covariance (DEC) method utilizing three different proton transfer reaction mass spectrometers (PTR-MS) so allowing a comparison between the instruments. The high resolution data from the PTR-MS instruments considerably enhances the original BEMA measurements of the mid 1990s.Depending on the measurement period, the volume mixing ratios were in the range 1.6-3.5 ppbv for methanol, 0.44-1.3 ppbv for acetaldehyde, 0.96-2.1 ppbv for acetone, 0.10-0.14 ppbv for isoprene, and 0.13-0.30 ppbv for monoterpenes. A diurnal cycle in mixing ratios was apparent with daytime maxima for methanol, acetaldehyde, acetone, and isoprene. The fluxes ranged from 370-440 µg m −2 h −1 for methanol, 180-360 µg m −2 h −1 for acetaldehyde, 180-450 µg m −2 h −1 for acetone, 71-290 µg m −2 h −1 for isoprene, and 240-860 µg m −2 h −1 for monoterpenes. From the measured flux data (7 May-3 June) an average basal emission rate for the Macchia vegetation was calculated

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“…1 This section is reproduced by permission from "Considering the air quality impacts of bioenergy crop production: a case study involving Arundo donax" by WC Porter, KC x Emission of BVOCs from plant vegetation (mostly from leaves) is the largest source of VOCs to the atmosphere, 15 totaling 1150 Tg C yr -1 compared to 130 TgC yr -1 from anthropogenic sources. 16 As the magnitude and chemical diversity of BVOC emissions are very plant-species specific, [17][18][19] shifting vegetation patterns and species composition -as well as overall changes in land use and land covercan have significant consequences for atmospheric composition. Given the important role of BVOCs in modulating atmospheric chemistry, [20][21][22][23] substantial previous modeling work has examined how anthropogenic-driven land-use and land-cover change, e.g.…”

Section: List Of Tablesmentioning

confidence: 99%

Air-quality and Climatic Consequences of Bioenergy Crop Cultivation

Porter¹

2000

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Bioenergy is expected to play an increasingly significant role in the global energy budget. In addition to the use of liquid energy forms such as ethanol and biodiesel, electricity generation using processed energy crops as a partial or full coal alternative is expected to increase, requiring large-scale conversions of land for the cultivation of bioenergy feedstocks such as cane, grasses, or short rotation coppice. With land-use change identified as a major contributor to changes in the emission of biogenic volatile organic compounds (BVOCs), many of which are known contributors to the pollutants ozone (O3) and fine particulate matter (PM2.5), careful review of crop emission profiles and local atmospheric chemistry will be necessary to mitigate any unintended air-quality consequences. In this work, the atmospheric consequences of bioenergy crop replacement are examined using both the high-resolution regional chemical transport model WRF/Chem (Weather Research and Forecasting with Chemistry) and the global climate model CESM (Community Earth System Model). Regional sensitivities to several representative crop types are analyzed, and the impacts of each crop on air quality and climate are compared. Overall, the high emitting crops (eucalyptus and giant reed) were found to produce climate and human health costs totaling up to 40% of the value of CO2 emissions prevented, while the related costs of the lowest-emitting crop (switchgrass) were negligible.ii Acknowledgements

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Volatile organic compounds (VOCs) emitted from 40 Mediterranean plant species:

Cited by 168 publications

References 30 publications

Light dependency of VOC emissions from selected Mediterranean plant species

Light dependency of VOC emissions from selected Mediterranean plant species

Concentrations and fluxes of biogenic volatile organic compounds above a Mediterranean macchia ecosystem in western Italy

Air-quality and Climatic Consequences of Bioenergy Crop Cultivation

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