Tropospheric ozone (O3) is an important stressor in natural ecosystems, with well‐
documented impacts on soils, biota and ecological processes. The effects of O3 on …

Tropospheric ozone (O3) levels are predicted to stay high, being a factor within “global
change” with potential effects on the carbon sink strength of forest trees. Hence, new …

The level II approach of the critical loads concept adopted by the UNECE aims at a flux
based evaluation and takes into account environmental factors governing stomatal …

The current AOT40 concept for inferring risks in forest trees by ozone (O3) injury is based on
an accumulated external O3 exposure rather than an internal O3 dose or uptake rate …

Biochemical measurements of antioxidants and protective pigments have been successfully
introduced as markers of environmental stress in field studies (mainly forest studies). A …

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 …

The estimate of growth losses by ozone exposure of forest trees is a significant part in
current C sequestration calculations and will also be important in future modeling. It is …

The response of leaf photosynthesis and metabolite profiles to ozone (O 3) exposure
ranging from 37 to 116 ppb was investigated in two soybean cultivars Dwight and IA3010 in …

Databases are needed for the ozone (O 3) risk assessment on adult forest trees under stand
conditions, as mostly juvenile trees have been studied in chamber experiments. A synopsis …

We characterized leaf gas exchange and antioxidative defence of two-year-old seedlings
and 60-year-old trees of Fagus sylvatica exposed to ambient (1× O3) or two-fold ambient (2× …