The University of Basel invites applications for a four-year fully funded PhD position in Physiological Tree Ecology, starting July 2026 or later. Hosted within the Department of Environmental Sciences, this opportunity is part of a Swiss National Science Foundation (SNSF)-funded project in collaboration with the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL). This position is ideal for candidates interested in plant physiology, climate change biology, and forest ecology, particularly in understanding how temperature limits shape tree distribution and growth.

This is more than a traditional PhD—it sits at the intersection of: Climate change science Plant physiological ecology Forest ecosystem modeling The project directly contributes to understanding how forests will respond to future climate scenarios, making it highly relevant for both academic research and environmental policy.

Research Context: Climate Limits and Tree Survival

Tree species across the globe exhibit clear elevational and latitudinal limits, often determined by their tolerance to low temperatures. However, the biological mechanisms behind these limits remain insufficiently understood.

This PhD project addresses a key scientific challenge:
How do low soil temperatures affect root water uptake and ultimately tree growth and survival?

The research will explore:

• Cold-induced hydraulic limitations in trees
• Root water uptake dynamics under low temperatures
• Species-specific physiological thresholds
• Implications for climate-driven range shifts

The findings will contribute to improving mechanistic models of tree distribution, critical for predicting ecosystem responses to global warming.

Your Role as a PhD Researcher

The selected candidate will engage in a combination of controlled experiments and field-based ecological research, bridging laboratory precision with real-world environmental complexity.

Core Responsibilities

• Design and conduct experiments on European tree seedlings
• Investigate root water transport mechanisms, including aquaporin activity
• Apply stable isotope labeling techniques
• Measure sap flow to determine temperature thresholds
• Perform fieldwork across elevational gradients in the Swiss Alps
• Collect and analyze soil and air temperature data
• Contribute to collaborative alpine research at Stillberg (Davos)
• Support teaching within the research group

Fieldwork will be a significant component, requiring regular work in subalpine environments.

Candidate Profile

Essential Requirements

• MSc degree in Ecology, Botany, Forest Science, Environmental Science, or related field
• Strong foundation in plant physiology
• Proficiency in R for statistical analysis
• Excellent written and spoken English
• Ability to work independently and collaboratively

Preferred Qualifications

• Experience with plant ecophysiological methods
• Familiarity with greenhouse experiments
• Basic understanding of electrical engineering
• Willingness to conduct extended fieldwork in alpine terrain

A proactive, well-organized, and solution-oriented mindset is critical for success in this role.

Research Environment and Benefits

Joining the University of Basel means becoming part of one of Europe’s most respected academic institutions.

What You Can Expect

• Fully funded PhD for four years (SNSF funding)
• Access to advanced research infrastructure
• Collaboration with leading institutions including Swiss Federal Institute for Forest, Snow and Landscape Research (WSL)
• Integration into international research networks
• Competitive salary and social benefits (Swiss standards)
• Structured PhD training and career development programs
• Inclusive and supportive research culture

Located at the crossroads of Switzerland, France, and Germany, Basel offers a dynamic academic and cultural environment.

Application Process

Required Documents

• Motivation letter (maximum one page)
• Curriculum Vitae (CV)
• Copy of MSc degree
• Contact details of three academic references

Timeline

• Application review begins: May 11, 2025
• Position remains open until filled
• Start date: July 2026 (flexible)
• Applications must be submitted via APPLY NOW

Contact

For inquiries, contact:
Prof. Dr. Günter Hoch (guenter.hoch@unibas.ch)

Frequently Asked Questions (FAQs)

1. Is this PhD position fully funded?

Yes, the position is fully funded by the Swiss National Science Foundation for four years.

2. What kind of fieldwork is involved?

You will conduct field measurements in alpine and subalpine regions, including long-term research sites in Switzerland.

3. Do I need prior experience with advanced lab techniques?

Not necessarily, but experience with plant physiology methods or isotope techniques is advantageous.

4. Is programming required?

Yes, candidates should be comfortable using R for statistical analysis.

5. Can international students apply?

Yes, the position is open to applicants worldwide, and international candidates are strongly encouraged.

6. What is the main research outcome expected?

The project aims to identify physiological temperature thresholds affecting tree growth and integrate them into predictive ecological models.

7. Are teaching responsibilities included?

Yes, the PhD candidate will contribute to teaching activities within the research group.

8. What makes this opportunity unique?

It combines experimental plant physiology, field ecology, and climate modeling—a rare and highly valuable interdisciplinary mix.