<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Owen, S M</style></author><author><style face="normal" font="default" size="100%">Boissard, Christophe</style></author><author><style face="normal" font="default" size="100%">Hewitt, C N</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Volatile organic compounds (vocs) emitted from 40 mediterranean plant species:: Voc speciation and extrapolation to habitat scale</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Environment</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">biogenic voc speciation</style></keyword><keyword><style  face="normal" font="default" size="100%">branch enclosure</style></keyword><keyword><style  face="normal" font="default" size="100%">extrapolation to regional scale</style></keyword><keyword><style  face="normal" font="default" size="100%">isoprene emissions</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean vegetation</style></keyword><keyword><style  face="normal" font="default" size="100%">monoterpene emissions</style></keyword><keyword><style  face="normal" font="default" size="100%">volatile organic compounds flux</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2001</style></year></dates><volume><style face="normal" font="default" size="100%">35</style></volume><pages><style face="normal" font="default" size="100%">5393-5409</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Forty native Mediterranean plant species were screened for emissions of the C5 and C10 hydrocarbons, isoprene and monoterpenes, in ﬁve diﬀerent habitats. A total of 32 compounds were observed in the emissions from these plants. The number of compounds emitted by diﬀerent plant species varied from 19 (Quercus ilex) to a single compound emission, usually of isoprene. Emission rates were normalised to generate emission factors for each plant species for each sampling event at standard conditions of temperature and light intensity. Plant species were categorised according to their main emitted compound, the major groups being isoprene, a-pinene, linalool, and limonene emitters. Estimates of habitat ﬂuxes for each emitted compound were derived from the contributing plant species’ emission factors, biomass and ground cover. Emissions of individual compounds ranged from 0.002 to 505 g ha 1 h 1 (camphene from garrigue in Spain in autumn and isoprene from riverside habitats in Spain in late spring; respectively). Emissions of isoprene ranged from 0.3 to 505 g ha 1 h 1 (macchia in Italy in late spring and autumn; and riverside in Spain in late spring; respectively) and a-pinene emissions ranged from 0.51 to 52.92 g ha 1 h 1 (garrigue in Spain in late spring; and forest in France in autumn; respectively). Habitat ﬂuxes of most compounds in autumn were greater than in late spring, dominated by emissions from Quercus ilex, Genista scorpius and Quercus pubescens. This study contributes to regional emission inventories and will be of use to tropospheric chemical modellers</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Owen, S</style></author><author><style face="normal" font="default" size="100%">Boissard, C</style></author><author><style face="normal" font="default" size="100%">Street, R A</style></author><author><style face="normal" font="default" size="100%">Duckham, S C</style></author><author><style face="normal" font="default" size="100%">Csiky, O</style></author><author><style face="normal" font="default" size="100%">Hewitt, C N</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Screening of 18 Mediterranean plant species for volatile organic compound emissions</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Environment</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Arbutus unedo</style></keyword><keyword><style  face="normal" font="default" size="100%">Biogenic emissions</style></keyword><keyword><style  face="normal" font="default" size="100%">branch enclosure</style></keyword><keyword><style  face="normal" font="default" size="100%">Chrysanthemum praecox</style></keyword><keyword><style  face="normal" font="default" size="100%">cistus incanus</style></keyword><keyword><style  face="normal" font="default" size="100%">Cistus salvifolius</style></keyword><keyword><style  face="normal" font="default" size="100%">Cytisus sp.</style></keyword><keyword><style  face="normal" font="default" size="100%">Dittrichia sp.</style></keyword><keyword><style  face="normal" font="default" size="100%">Erica arborea</style></keyword><keyword><style  face="normal" font="default" size="100%">Erica multiflora</style></keyword><keyword><style  face="normal" font="default" size="100%">Helichrysum stoechas</style></keyword><keyword><style  face="normal" font="default" size="100%">isoprene</style></keyword><keyword><style  face="normal" font="default" size="100%">Juniperus oxycedrus</style></keyword><keyword><style  face="normal" font="default" size="100%">Juniperus phoenicea</style></keyword><keyword><style  face="normal" font="default" size="100%">Monoterpene</style></keyword><keyword><style  face="normal" font="default" size="100%">myrtus communis</style></keyword><keyword><style  face="normal" font="default" size="100%">Phillyrea angustifolia</style></keyword><keyword><style  face="normal" font="default" size="100%">Pinus pinea</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus cerris</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">Rubus fruticosus</style></keyword><keyword><style  face="normal" font="default" size="100%">Spartium junceum</style></keyword><keyword><style  face="normal" font="default" size="100%">VOCs</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1997</style></year></dates><volume><style face="normal" font="default" size="100%">31, Supple</style></volume><pages><style face="normal" font="default" size="100%">101-117</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Eighteen tree and shrub species were screened for emissions of isoprene and other volatile organic compounds (VOCs) at three locations at Castelporziano (Italy) using a bag-enclosure sampling method followed by GC analysis. Thirty emitted compounds were identified. Temperature sensitivity of emissions of monoterpenes varied between species. Strong temperature dependencies were found for isoprene emissions. For monoterpene-emitting plant species with greatest ground cover in the dunes and macchia habitats, α-pinene, β-pinene and sabinene appeared to be the most frequently and abundantly emitted compounds. Isoprene was the major emission from the shrub species screened in the forest. Emissions from four dominant plant species were scaled up to estimate total fluxes from the dunes and macchia over a daytime period. Species with greatest biomass but low emission rates made a substantial contribution to total emissions.</style></abstract></record></records></xml>