Abstract
Abstract The main objectives of this study were to gain insight into relationships between crown condition, foliar composition, and soil chemistry on the one hand and various environmental factors, including atmospheric deposition and air pollution, on the other. Defoliation of beech ( Fagus sylvatica L.) trees was very similar across the different surveys, reaching a maximum in 1996, a year following a period of drought. Biotic effects also influenced forest health, especially Rhynchaenus fagi L., which was present during all surveys. Visible ozone-injury-like symptoms observed on beech and Vaccinium myrtillus L. leaves suggested that ozone and/or other air pollutants could be additional damaging factors in this area. The high ozone concentrations recorded in the field, and the detection of several anthropogenic hydrocarbons, supported this hypothesis. Foliar analysis of beech trees revealed relatively low contents of Cu and Fe and high levels of Ca and Na. Beech trees showed a good nutritional balance for other elements. Soils were desaturated in basic cations and had low nutrient contents. Several acid episodes (pH
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