Felix Jäger | University of Hohenheim, Stuttgart

About Me

I am a Ph.D. student in theoretical ecology and evolution. I am based at the University of Hohenheim, Stuttgart, Germany, in the Department of Eco-evolutionary modelling.

Research Interests

My research aims to reveal fundamental relations between biotic interactions and evolutionary dynamics. I am particularly interested in the effects of combining different types of interactions. For example, I have studied coevolutionary transitions between mutualism and antagonism and the evolutionary assembly of tripartite mutualistic-antagonistic ecological networks, such as plant-pollinator-herbivore networks. The methods I use include adaptive dynamics, quantitative genetics, individual-based modelling, network theory and dynamical systems theory, employing both analytical and simulation-based approaches.

Publications

Between Friends and Foes - Evolutionary Diversification in Mutualistic-Antagonistic Networks

Felix Jäger, Nicolas Loeuille, Youssef Yacine, Korinna T. Allhoff

bioRxiv, 2026. Preprint
Fitness landscapes of biotic interactions shape the ecological and evolutionary dynamics of biodiversity

Frank M. Schurr, Felix Jäger, Simone Capellari-Rabeling, Ingo Grass, Jörn Pagel, Malina Palmer, Georg Petschenka, Mialy Razanajatovo, Philipp M. Schlüter, Andreas H. Schweiger, Christine S. Sheppard, Anke Steppuhn, Korinna T. Allhoff

EcoEvoRxiv, 2025. Preprint
Farmer decision-making on agri-environmental schemes - An agent-based modelling approach to evaluate different policy designs in Saxony, Germany

Meike Will, Felix Jäger, Birgit Müller

Agricultural Systems, 2025.
From friend to foe and back - coevolutionary transitions in the mutualism–antagonism continuum

Felix Jäger, Frank M. Schurr, Korinna T. Allhoff

Proceedings of the Royal Society B, 2025.
Using Bayesian Belief Networks to Investigate Farmer Behavior and Policy Interventions for Improved Nitrogen Management

Felix Jäger, Jessica Rudnick, Mark Lubell, Martin Kraus, Birgit Müller

Environmental Management, 2022.

Short CV

11/2023 – present: PhD in theoretical ecology and evolution
- University of Hohenheim, Germany, supervised by Dr Korinna T. Allhoff
- Eco-evolutionary modelling of tripartite ecological interaction networks
10/2019 - 10/2023: Research assistant in socio-ecological modelling
- Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany, Department of Ecological Modelling
10/2019 – 08/2022 Master of Science in Mathematics
- University of Bonn, Germany, master´s thesis in mathematical logic
10/2015 – 03/2019 Bachelor of Science in Mathematics
- University of Bonn, Germany, bachelor’s thesis in mathematical logic

Teaching Experience

Lecturer in “Theoretical Ecology: From Chaos to Coexistence”
- M.Sc. course at the University of Hohenheim
- focus on equation-based modelling and programming in Python
Assistant lecturer in “Computational Ecology: Modelling Systems across Scales”
- B.Sc. course at the University of Hohenheim
- focus on individual-based modelling and programming in NetLogo
Tutor for “Introduction to Mathematical Logic” and “Linear Algebra”
- B.Sc. courses at the University of Bonn