Nutritional effects triggered by the extreme summer 2003 in the free air ozone fumigation experiment at the Kranzberger Forst

Since the year 2000 mature beech and spruce trees were treated in a field experiment with double ambient ozone concentrations. Elevated ozone had no influence on average single leaf biomass and there were also no ozone effects on leaf nutrient concentrations in climatic normal years. However, the ex...

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Bibliographic Details
Published in:European journal of forest research 2009-03, Vol.128 (2), p.129-134
Main Authors: Göttlein, A, Rodenkirchen, H, Häberle, K. H, Matyssek, R
Format: Article
Language:English
Subjects:
Biomass
Biomedical and Life Sciences
Drought
Forestry
Fumigation
Leaves
Life Sciences
Nutrient concentrations
Nutrition
Original Paper
Ozone
Pine needles
Pine trees
Plant Ecology
Plant Sciences
Summer
Trees
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Summary:Since the year 2000 mature beech and spruce trees were treated in a field experiment with double ambient ozone concentrations. Elevated ozone had no influence on average single leaf biomass and there were also no ozone effects on leaf nutrient concentrations in climatic normal years. However, the extraordinary dry summer 2003 triggered significant differences between the fumigated and control trees. For beech in the year after the drought event the control trees surprisingly had significantly lower foliar levels of K and P than in former years, whereas the ozone exposed trees showed no significant nutritional effects. There are indications, that the trees exposed to double ambient ozone were already adapted to higher ozone values, whereas the control trees experienced extraordinary high ambient ozone concentrations in the dry and sunny summer 2003. For spruce in autumn 2003 and 2004 ozone treated trees had significantly higher foliar levels of K in current year needles than control trees, an effect which cannot be thoroughly interpreted yet on the basis of the dataset available.
ISSN:1612-4669
1612-4677
DOI:10.1007/s10342-008-0244-4