Effects of ozone concentrations on biogenic volatile organic compounds emission in the Mediterranean region

J. Peñuelas, J. Llusià, B. S. Gimeno

    Research output: Contribution to journalArticleResearchpeer-review

    56 Citations (Scopus)

    Abstract

    Measurements of air volatile organic compounds (VOCs) and ozone concentrations in different rural sites of Catalonia (NE Spain) were conducted during 1995 and 1996, and the effects of ozone concentrations on biogenic emissions of Mediterranean plants were studied in open top chambers. A significant positive relationship was found between tropospheric ozone and VOC concentrations, which followed seasonal (maximum in early summer and minimum in early winter) and geographical (slightly larger concentrations in interior than in coastal sites) patterns. Results in the open top chambers fumigation experiments showed species-specific responses. There was no significant effect of ozone on VOCs and terpene emission by Aleppo pines, Pinus halepensis L., but there was an order of magnitude increase in VOC emission with increasing tropospheric ozone concentrations (plus 40 nl L-1) in tomatoes, Solanum lycopersicum L. var. Tiny Tim. This response of tomato plants thus opens the possibility of a positive feedback for tropospheric ozone formation.
    Original languageEnglish
    Pages (from-to)17-23
    JournalEnvironmental Pollution
    Volume105
    Issue number1
    DOIs
    Publication statusPublished - 1 Apr 1999

    Keywords

    • Biogenic emissions
    • Pinus halepensis L.
    • Solanum lycopersicum L.
    • Terpenes
    • Tropospheric ozone
    • Volatile organic compounds

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