Sensitivity of adult beech and spruce trees of a mixed forest to chronic ozone exposure: findings from a free-air ozone fumigation experiment
2002
Nunn, A. J. (Technische Universitaet Munchen, Freising (Germany). Lehrstuhl fur Forstbotanik) | Reiter, I. M. | Heerdt, Ch. | Haberle, K. H. | Langerbartels, Ch. | Werner, H. | Sandermann, H. | Fabian, P. | Matyssek, R.
The study aims at assessing response patterns to chronic O3 exposure in adult forest trees, examining physiological and structural responses at the organ and whole-tree level for consistency by means of biochemical and ecophysiological analyses. Through comparison between the two O3 regimes, conclusions can be drawn about processes, which are at risk or already affected by ozone under the unchanged, prevailing stand conditions. Responses are related to the O3 influx into leaves as a measure of the physiologically effective O3 dose and cross-compared with the AOT 40 concept which is being validated on the two O3 fluxes and AOT40-related responses in biochemical, ecophysiological and structural tree parameters
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