Mechanisms of Forest Resilience

Linking tree stress responses across scales

Forests regulate major carbon and water cycles of the Earth system, yet increasing heat and drought events threaten their resilience.

Our research advances mechanistic understanding of how trees and forests respond to climatic stress by integrating experiments, forest observations, and ecosystem modelling across scales—from organs and trees to landscapes. We investigate species-specific stress responses, post-stress recovery, and legacy effects. By uncovering the mechanisms that govern tree stress responses and recovery, our research provides the scientific foundation needed to better anticipate climate change impacts on forests and inform strategies that support resilient forest ecosystems. Alongside our research, we teach students in eco-physiological science and share knowledge with schools and society.

group logo
Group members in front of the greenhouse after tidying up

 Prof. Dr. Nadine Rühr doing experiments in the greenhouse at IMK-IFU

The greenhouse at KIT-Campus Alpin in front of the Alpspitze

Biomass samples in front of the IMK-IFU greenhouse

PhD student measuring chlorophyll content during a hot drought stress experiment in the greenhouse at IMK-IFU

Two people working in the lab at IMK-IFU

Winter trees in front of the greenhouse at IMK-IFU

PhD student examines the experimental trees in the greenhouse at IMK-IFU

A person using the PSI PolyPen to measure the spectral reflectance  on a beech leaf

Three persons in the greenhouse at work

Preparing tree needles for further measurement

Greenhouse experiments with dendrometer on a tree


News

Plant Ecophysiology working group standing on a terrace in front of a spruce tree, lake Kochelsee in the backgroundNadine Rühr, KIT
Group Retreat 2026 in Kochel

We engaged in fruitful discussions on the future research strategy of our team in a perfect setting just above the Kochelsee.

Group of four adults posing indoors; one wears a festive graduation cap.Nadine Rühr, KIT
Congratulations, Franklin!

February, 2026: Franklin has successfully defended his PhD thesis, “Investigating Eco-Physiological Mechanisms of Stress Response and Recovery in Temperate Trees,” with highest honors. Congratulations!

Plant ecophys working group celebrating Dr. Timo Knuever's defenseNadine Rühr, KIT
Congratulations, Timo!

November, 2025: Timo defended his PhD thesis on “Post-drought recovery in juvenile and adult Norway spruce” very successfully at the Botanical Institute of the University Innsbruck. Congratulations!
 

 

Collaborations

Trees in the foothills of the Alps Gabi Zachmann, KIT
Forests in a warmer world

Forests ecosystems are critical for climate regulation, land biodiversity, for providing fresh water, timber and non-timber products, and also for human well-being and security.

What we do - simply explained
Measuring instruments on a meadow in the foothills of the Alps Markus Breig, KIT
Institute of Geography and Geoecology (IFGG)
Aerial view of healthy and damaged conifers
International Tree Mortality Network

Our mission is to facilitate collaboration between scientists to combine expertise, knowledge and data...

Network for scientists