Ozone uptake by an evergreen Mediterranean Forest () in Italy. Part I: Micrometeorological flux measurements and flux partitioning

Gerosa, Giacomo; Vitale, Marcello; Finco, Angelo; Manes, Fausto; Denti, Antonio Angelo Ballarin; Cieslik, S.

doi:10.1016/j.atmosenv.2005.01.056

Cited by 96 publications

(70 citation statements)

References 34 publications

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“…Evergreen species have developed a conservative water-use strategy, showing a high stomatal sensitivity to drought (Mediavilla and Escudero, 2003). In summer, Q. ilex strongly reduces stomatal conductance, thereby limiting ozone uptake (Gerosa et al, 2005;Manes et al, 2007); this would further contribute to preventing ozone effects in this species under field conditions. In contrast, deciduous species such as Q. faginea, and more particularly Q. pyrenaica, show a non-conservative strategy, maintaining stomatal conductances relatively high even in summer; this is probably possible by developing deep roots that may have access to tap soil water reserves (Gallego et al, 1994;Mediavilla and Escudero, 2003).…”

Section: Discussionmentioning

confidence: 99%

Responses of evergreen and deciduous Quercus species to enhanced ozone levels

Calatayud

Cerveró

Calvo

et al. 2011

Environmental Pollution

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t r a c tPlants of one evergreen oak (Quercus ilex) and three deciduous oaks (Q. faginea, with small leaves; Q. pyrenaica and Q. robur, with large leaves) were exposed both to filtered air and to enhanced ozone levels in Open-Top Chambers. Q. faginea and Q. pyrenaica were studied for the first time. Based on visible injury, gas exchange, chlorophyll content and biomass responses, Q. pyrenaica was the most sensitive species, and Q. ilex was the most tolerant, followed by Q. faginea. Functional leaf traits of the species were related to differences in sensitivity, while accumulated ozone flux via stomata (POD 1.6 ) partly contributed to the observed differences. For risk assessment of Mediterranean vegetation, the diversity of responses detected in this study should be taken into account, applying appropriate critical levels.

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Section: Discussionmentioning

confidence: 99%

Responses of evergreen and deciduous Quercus species to enhanced ozone levels

Calatayud

Cerveró

Calvo

et al. 2011

Environmental Pollution

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“…F st and F ns are usually partitioned by resistance models (Gerosa et al, 2004;Lamaud et al, 2009). The ratio of F st to F o usually varies from 1/2 to 1/3 in terrestrial ecosystems, and it is affected by physiological activity and meteorological conditions (Gerosa et al, 2004(Gerosa et al, , 2005Fowler et al, 2009;Lamaud et al, 2009). The estimation of F st and additional relevant research will be carried out in the future.…”

Section: Mean Diurnal Variations Of Ozone Flux and Its Uncertaintymentioning

confidence: 99%

Ozone concentrations, flux and potential effect on yield during wheat growth in the Northwest-Shandong Plain of China

Zhu

Sun

Zhao

et al. 2015

Journal of Environmental Sciences

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“…Conversely, increased O 3 concentrations may damage vegetation and inhibit CO 2 uptake, leading to feedback effects on tropospheric CO 2 concentrations (Felzer et al, 2005;Sitch et al, 2007). Dry deposition of O 3 to external plant surfaces is still not well understood, but the process is known to be at least as important as stomatal uptake, at least for mid-latitudes, and has been shown to increase with increasing temperatures (Altimir et al, 2004;Gerosa et al, 2005;Hogg et al, 2007;Mikkelsen et al, 2004). These surface effects have not yet been included in global models.…”

Section: Dry and Wet Depositionmentioning

confidence: 99%

Surface ozone concentrations and ecosystem health: Past trends and a guide to future projections

Cape

2008

Science of The Total Environment

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This paper reviews current understanding of the sources and sinks of ozone in the troposphere, recent studies of long-term trends, and the factors which have to be taken into consideration when constructing and interpreting future models of ozone concentration. The factors controlling surface O 3 concentrations are discussed initially to provide a basis for the ensuing discussion, followed by a summary of the evidence for recent trends in ground-level ozone concentrations, i.e. over the past 3 decades, which have shown a significant increase in the annual average in 'background' air typical of the unpolluted northern hemisphere. Closer to precursor sources, although urban winter concentrations have increased, rural peak spring and summer concentrations during ozone 'episodes' have decreased markedly in response to emissions reductions. In order to determine whether such trends are meaningful, the statistical techniques for determining temporal trends are reviewed. The possible causes of long-term trends in ozone are then discussed, with particular reference to the use of chemistry-transport models to interpret past trends. Such models are also used to make predictions of future trends in surface ozone concentrations, but few are comprehensive in integrating future climate changes with changes in land use and in emissions of ozone precursors. Guidance is given on the likely effects of climate/precursor/chemistry interactions so that model predictions can be judged.

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Ozone uptake by an evergreen Mediterranean Forest () in Italy. Part I: Micrometeorological flux measurements and flux partitioning

Cited by 96 publications

References 34 publications

Responses of evergreen and deciduous Quercus species to enhanced ozone levels

Responses of evergreen and deciduous Quercus species to enhanced ozone levels

Ozone concentrations, flux and potential effect on yield during wheat growth in the Northwest-Shandong Plain of China

Surface ozone concentrations and ecosystem health: Past trends and a guide to future projections

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