Soil microorganisms and plants are key players in the production and breakdown of organic matter, and together control global biogeochemical cycles of carbon, nitrogen and phosphorus. TER, the Division of Terrestrial Ecosystem Research, aims to advance our fundamental understanding of how plants and soil microorganisms respond to, and in turn shape, their abiotic and biotic environment, and to determine the consequences for the functioning of Earth’s ecosystems.
Research Mission
Primarily dedicated to basic research, TER addresses pressing environmental issues, such as the impact of climate and land-use change on ecosystem functioning and the role of soils in the global carbon cycle and in food security. In doing so, we work on scales from µm (i.e. the scale at which microbes operate) to the biosphere (i.e. where plant and microbial processes become evident), and in ecosystems spanning the Arctic tundra to tropical rainforests. We integrate this scale of thinking with state-of-the-art methods, including stable isotope tracing and biomarker fingerprinting, and are developing novel approaches to estimate gross environmental processes with isotope pool dilution techniques.
We are strongly committed to conduct world-leading research in a motivating and intellectually stimulating environment, and to train our students to become independent and internationally competitive scientists who enjoy research and contribute to society as conscientious citizens.

Research Projects
ClimGrass C – Grassland carbon dynamics in a changing climate
Climate changes and elevated CO2 have major impacts on biogeochemical cycles, which may in turn feed back on the climate system. ClimGrass-C is a new project that aims to assess effects of multiple levels of elevated CO2 and warming and of an extreme climatic event (combined drought and heatwave) on ecosystem carbon dynamics and their interactions with the water and nitrogen cycles.
In particular, ClimGrass-C aims to (i) obtain response surfaces of ecosystem processes based on multistep changes of warming and elevated CO2, (ii) detect how such changes modify plant and soil responses to extreme climatic events (drought / heatwave), and (iii) identify if and how this extreme climatic event influences the ecosystem response to warming and elevated CO2, and a subsequent extreme event (legacy effects).
ClimGrass C is based on an experimental infrastructure at the AREC Raumberg-Gumpenstein and funded by the FWF - Austrian Science Fund.
Cooperation:
- Michael Bahn (PI of ClimGrass C), University of Innsbruck, Austria
- Erich Pötsch, AREC Raumberg-Gumpenstein, Austria
- Markus Herndl, AREC Raumberg-Gumpenstein, Austria


Investigated by:
- Andreas Richter
- Wolfgang Wanek
- Judith Prommer
- Christina Kaiser