| Validation of the stomatal flux approach for the assessment of ozone visible injury in young forest trees. Results from the TOP (transboundary ozone pollution) experiment at Curno, Italy. | |
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MedLine Citation:
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PMID: 19019512 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This paper summarises some of the main results of a two-year experiment carried out in an Open-Top Chambers facility in Northern Italy. Seedlings of Populus nigra, Fagus sylvatica, Quercus robur and Fraxinus excelsior have been subjected to different ozone treatments (charcoal-filtered and non-filtered air) and soil moisture regimes (irrigated and non-irrigated plots). Stomatal conductance models were applied and parameterised under South Alpine environmental conditions and stomatal ozone fluxes have been calculated. The flux-based approach provided a better performance than AOT40 in predicting the onset of foliar visible injuries. Critical flux levels, related to visible leaf injury, are proposed for P. nigra and F. sylvatica (ranging between 30 and 33 mmol O(3) m(-2)). Soil water stress delayed visible injury appearance and development by limiting ozone uptake. Data from charcoal-filtered treatments suggest the existence of an hourly flux threshold, below which may occur a complete ozone detoxification. |
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Authors:
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G Gerosa; R Marzuoli; R Desotgiu; F Bussotti; A Ballarin-Denti |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Validation Studies Date: 2008-11-18 |
Journal Detail:
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Title: Environmental pollution (Barking, Essex : 1987) Volume: 157 ISSN: 1873-6424 ISO Abbreviation: Environ. Pollut. Publication Date: 2009 May |
Date Detail:
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Created Date: 2009-04-06 Completed Date: 2009-05-21 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8804476 Medline TA: Environ Pollut Country: England |
Other Details:
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Languages: eng Pagination: 1497-505 Citation Subset: IM |
Affiliation:
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Department of Mathematics & Physics, Catholic University, via dei Musei 41, 25125 Brescia, Italy. giacomo.gerosa@unicatt.it |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Air Pollutants
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analysis,
toxicity* Climate Dehydration Ecology / methods Environmental Exposure Environmental Monitoring / methods, standards* Fagus / growth & development, metabolism Fraxinus / growth & development, metabolism Italy Models, Biological Ozone / analysis, toxicity* Plant Leaves / drug effects, metabolism Plant Stomata / metabolism* Populus / growth & development, metabolism Quercus / growth & development, metabolism Seedling Trees / growth & development, metabolism* |
| Chemical | |
Reg. No./Substance:
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0/Air Pollutants; 10028-15-6/Ozone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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