Long-range transport of tropospheric ozone and its pollutant precursors has been identified in southern Switzerland. The aims of this project were to assess the extent of ozone-induced foliar injuries in the most highly exposed forests and to confirm the cause of injury by controlled exposures.

Lingue disponibili: inglese

Halocarbon exposure can result in degradation of photosynthetic pigments in trees and affect xenobiotic metabolism in plants. The aim of this project was to determine the levels of trichloroacetate in needles of conifer species in Swiss forests and to compare these with levels in other European forests.

Lingue disponibili: inglese

Since 1993 Prunus serotina showed symptoms typical of ozone injury at many sites in southern Ticino. The aims of this project were to confirm that this foliar injury is caused by ozone and to determine the ozone concentrations that induce the injury.

Lingue disponibili: inglese

Special focus of the Integrated Monitoring of Air Pollution Effects on Ecosystems is to improve the understanding about the effects of sulphur and nitrogen inputs into ecosystems. The research methods are intensive and are carried out within ecosystems in small hydrologically delineated catchments.

Lingue disponibili: inglese

Um die Prozesse in einem Waldökosystem besser verstehen zu können, ist es notwendig, die Interaktionen zwischen den Kompartimenten und die Stoffflüsse im Nährstoffkreislauf kontinuierlich zu erfassen. Wissenschafter untersuchen die Nährstoffeinträge ins Ökosystem Wald und ihre Auswirkungen auf Blätter, Nadeln und Bodenvegetation.

Lingue disponibili: tedesco inglese

Hochauflösende Messungen des Stammumfangs von Bäumen sollen aufzeigen, wie Umwelteinflüsse auf das Baumwachstum wirken. Sind kurzfristige Änderungen des Stammumfangs Indikatoren für die Vitalität eines Baumes? Wie ist die Wechselwirkung zwischen Nachbarbäumen?

Lingue disponibili: tedesco inglese

Depuis 1985, l'Inventaire Sanasilva assure le suivi de la santé des forêts suisses grâce à l'observation des houppiers et d'autres indicateurs de l'état des arbres. L'observation porte sur un échantillon systématique. Parallèlement aux changements méthodologiques, le nom de l'Inventaire a également évolué.

Lingue disponibili: tedesco inglese francese

Comment les stress d'origine naturelle et anthropique affectent-ils les forêts à long terme? Quels risques en découlent pour l'homme? Pour répondre à ces questions, nous devons d'abord améliorer notre connaissance des processus et des relations de cause à effet qui sous-tendent le fonctionnement des écosystèmes forestiers.

Lingue disponibili: tedesco inglese francese

Scientists investigate the reactions of fine roots of spruce and poplar to enhanced heavy metal contents in the soil. They measure growth and architecture of newly derived fine roots of these trees and investigate mycorrhizas of birches in order to localise and quantify the heavy metals on a subcellular level.

Lingue disponibili: inglese