Past projects

Woody plant interactions (2018)
Competition for nitrogen between woody species and invasive grasses (2016-2017)
Plant interactions in the rhizosphere of forest ecosystems (2015-2017)
Intra- and interspecific competition for different nitrogen sources in a temperate forest community (2015-2016)
Consequences of insect mass outbreaks on tree nutrition of pine trees (2014-2017) – collaboration with Anne l-M-Arnold (University of Göttingen, Germany), Heinz Rennenberg (University of Freiburg, Germany) in the framework of the working group “ENVIRUS – ENVIRonment Under Stress”
Competition for nitrogen in (sub-) tropical forests (2014-2016) – collaboration with Susanne Schmidt (University of Queensland, Australia)
Plant invasions – Competitive advantage due to higher N use efficiency or optimised acquisition strategies? (2013-2016) – collaboration with Mark van Kleunen (University of Konstanz, Germany)
Effects of climate change on the competition for nitrogen in temperate forest ecosystems.(2011-2014)
Influence of water and nitrogen availability on the competition between European beech and sycamore maple for soil nitrogen sources. (2010-2014)
Competitive patterns of N partitioning between plants and microorganisms in intact plant-soil-systems. (2010-2013)
The significance of NO and CO2 as signal substances in the competition for nitrogen between beech and soil microorganisms. (2009-2014)
Root N uptake of wheat cultivars in AGFACE. (2011-2012) – collaboration with Michael Tausz (University of Melbourne, Australia), Heinz Rennenberg (University of Freiburg, Germany)
Identification of drought-tolerant beech proveniences using molecular genetic and physiological markers (2013-2014) – collaboration with Aikaterini Dounavi (FVA Freiburg, Germany), Heinz Rennenberg (University of Freiburg, Germany)
Influence of phenolic compounds on tree herbivory by the beaver in different tree species. (2011-2013) – collaboration with Thomas Kaphegyi (University of Freiburg, Germany)
N uptake in degraded forest ecosystems in the Qinling mountains. (2011-2012) – collaboration with Shuoxin Zhang (Northwest A&F University Yangling, China), Klaus Butterbach-Bahl (Karlsruhe Institute of Technology, Germany), Heinz Rennenberg (University of Freiburg, Germany)
Influences of air warming and / or drought on different oak species and provenances. (2009-2012)
Effects of drought stress on nitrogen uptake and metabolism in European beech. (2008-2012)
The significance of N uptake and metabolism by beech roots for the competition for N in the rhizosphere. (2006-2009)