We study processes that determine plant growth and plant responses in structure and function to natural and anthropogenic influences. We focus on the analysis of carbon and water budgets, resource allocation, root/shoot interactions and biotic interactions including effects of associated microorganisms (e.g. competition, facilitation, holobiont). Currently, we are particularly interested in the effects of extreme dry years and elevated atmospheric CO2 and ozone concentrations and thus the role of plants in climate change.

We record parameters of resource turnover (e.g. photosynthesis, respiration, water transport, transpiration) as well as structural and morphological parameters (e.g. crown and root structure, anatomical organ structure). Stable isotopes play a central role in almost all projects. The focus of our interest is typically the plant individual, which we study both in the laboratory and at the natural site in the field. For this purpose, we conduct experimental studies to quantify plant responses e.g. under controlled environments in climate chambers (e.g. TUMmesa) or in the intensively instrumented field laboratory "Kranzberger Forst". Our studies integrate from the molecule to the organ and individual level to the stand.

These research foci are also reflected in our teaching profile. It ranges from the basics of botany and ecology to special courses on process-oriented mechanisms of plant reactions in global change.