PhD position: density dependence of symbiosis form and its implications for population and community dynamics.

Join us to study the density dependence of symbiosis form and its impact on population dynamics in the Collaborative Research Unit DynaSym. We aim to use experimental and modeling approaches to test and develop basic concepts of density dependence of symbiosis form (e.g., shift from predator-prey to mutualistic interaction and back).

PhD position: This project will use ciliate algae systems to show the density dependence of symbiosis forms under different environmental conditions, how differences in costs and benefits contribute to the density dependence, and how the density dependence affects population dynamics and the dynamic feedback between population density and symbiosis form. The project also includes the analysis of model simulations in collaboration with Ursula Gaedke and Toni Klauschies (University of Potsdam). Highly motivated candidates with a Master's degree in ecology, evolutionary biology or related fields and experience in experimental work with microbial eukaryotic systems are strongly encouraged to apply. Ideally, the candidate will have some experience with data analysis in R and/or modeling experience. Candidates should demonstrate an enthusiasm for basic research and the ability to communicate effectively with individuals from a wide range of disciplines. The position is for 48 months.

The Research Unit DynaSym has recently been funded by the German Research Foundation DFG ( and is a collaborative initiative bringing together research groups from across Germany and international collaborators. 8 projects will collaborate within the research unit and cover experimental work with plankton systems, modeling, theory development and synthesis work. Workshops, retreats and research visits to other research groups are planned for all participants to facilitate exchange and additional training.

Konstanz is a very beautiful and pleasant place to live, bordering the third largest lake in Central Europe and situated near the Alps. As an equal opportunities employer, we welcome applicants from all sections of the community regardless of age, gender, gender identity, ethnicity, disability and sexual orientation. Interested candidates should send a CV, a short cover letter highlighting interests and potential research questions, and the contact details of two professional referees to For more information see or send email to Lutz. Review of applications will begin immediately and will continue until the position is filled.