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Open Access Green as soon as Postprint is submitted to ZB.
Comparison of ozone uptake and sensitivity between a phytotron study with young beech and a field experiment with adult beech (Fagus sylvatica).
Environ. Pollut. 137, 494-506 (2005)
Chamber experiments on juvenile trees have resulted in severe injury and accelerated loss of leaves along with reduced biomass production under chronically enhanced O3 levels. In contrast, the few studies conducted on adult forest trees in the field have reported low O3 sensitivity. In the present study, young beech in phytotrons was more sensitive to O3 than adult beech in the field, although employed O3 regimes were similar. The hypotheses tested were that: (1) differences in O3 uptake were caused by the ontogenetically higher stomatal conductance of young compared to adult trees, (2) the experimental settings in the phytotrons enhanced O3 uptake compared to field conditions, and (3) a low detoxification capacity contributes to the higher O3 sensitivity of the young trees. The higher O3 sensitivity of juvenile beech in the phytotrons is demonstrated to relate to both the experimental conditions and the physiological responsiveness inherent to tree age.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
ozone uptake; modelling; Fagus sylvatica; free-air exposure; drought; detoxification
ISSN (print) / ISBN
0269-7491
e-ISSN
1873-6424
Journal
Environmental Pollution
Quellenangaben
Volume: 137,
Issue: 3,
Pages: 494-506
Publisher
Elsevier
Reviewing status
Peer reviewed
Institute(s)
Research Unit Environmental Simulation (EUS)