Visible leaf injury in young trees of Fagus sylvatica L. and Quercus robur L. in relation to ozone uptake and ozone exposure. An Open-Top Chambers experiment in South Alpine environmental conditions

Giacomo Alessandro Gerosa, Riccardo Marzuoli, Rosanna Desotgiu, Filippo Bussotti, Antonio Angelo Ballarin Denti, R. Desotgiu, F. Bussotti, A. Ballarin-Denti

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

41 Citazioni (Scopus)

Abstract

An Open-Top Chambers experiment on Fagus sylvatica and Quercus robur seedlings has been conducted in order to compare the performance of an exposure-based (AOT40) and a flux-based approach in predicting the appearance of ozone visible injuries on leaves. Three different ozone treatments (charcoal-filtered; non-filtered; and open plots) and two soil moisture treatments (watered and non-watered plots) have been performed. A Jarvisian stomatal conductance model was drawn up and parameterised for both species and typical South-Alpine environmental conditions, thus allowing the calculation of ozone stomatal fluxes for every treatment. A critical ozone flux level for the onset of leaf visible injury in beech has been clearly identified between 32.6 and 33.6 mmol O3m-2. In contrast, it was not possible to identify an exposure critical level using the AOT40 index. Water stress delayed the onset of the leaf visible injuries, but the flux-based approach was able to accurately take it into account.
Lingua originaleEnglish
pagine (da-a)274-284
Numero di pagine11
RivistaEnvironmental Pollution
Volume152
DOI
Stato di pubblicazionePubblicato - 2008

Keywords

  • FLUSSI DI OZONO
  • OTC
  • faggio
  • farnia
  • quercia
  • sintomi fogliari

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