The mission of LWF is to improve our understanding of how natural and anthropogenic stresses affect forests in the long term, and which risks for humans are involved. Consequently, we need to gain a more profound knowledge of the cause-effect relationships in the forest ecosystem and the underlying processes.
In a changing environment, the analysis of how forest ecosystems may react under scenarios involving changing climatic conditions is of major importance. This project wants to evaluate the influence of expected climatic changes (precepitation and temperature regimes) on trees and the state of our forests.
The history of many long-term forest ecosystem research sites is largely unknown. This means that it is difficult to place the observations within any sort of temporal context. Tree-ring analysis provides a means of obtaining such historical information.
The knowledge of the defoliation effects on the physiological processes resulting in tree growth is still lacking. How are the responses of the photosynthetic activity and the coresponding available carbohydrates to defoliation? What are the effects on height, on diameter growth and in the wood anatomical characteristics of tree rings?