My interdisciplinary interests have led me down a unique career path. Initially, I pursued a formal technical education in informatics for two years, followed by a degree in Conservation Biology. My academic journey then led to a Master’s in Environmental Sciences within the Theoretical Biology group, focusing on Ecology and Evolution in the Department of Integrative Biology. After completing my Master’s, I gained experience in both the public and private sectors. Returning to academia, I earned my PhD, investigating the role of past environmental conditions and eco-evolutionary feedbacks on the emergence of biodiversity. During this time, I developed an eco-evolutionary simulation engine called gen3sis, available as an R package. By integrating this framework with new paleoenvironmental reconstructions and multiple biodiversity datasets, I addressed several complex scientific questions that had previously remained open. I continue to explore these questions at iDiv, working to connect different temporal and spatial dimensions in close collaboration with Jonathan Chase, Renske Onstein, Duarte Viana, and Thorsten Wiegand.

07.2016 – 01.2021

Doctor of Sciences: Environmental Sciences

Swiss Federal Institute of Technology Zürich, ETH, Switzerland
Swiss Federal Institute for Forest, Snow and Landscape Research, WSL, Switzerland

• On the Emergence of Biodiversity: Mechanistically Bridging Ecology, Evolution and Paleo-Environments.
• Advisor: Prof. Dr. Loïc Pellissier; Co-Examiners: Dr. Carlos Melian, Prof. Dr. Jens-Christian Svenning and Prof. Dr. Niklaus E. Zimmermann

09.2010 – 09.2013

Master in Environmental Sciences: Ecology and Evolution

Swiss Federal Institute of Technology Zurich, ETH, Switzerland

• Macroevolutionary dynamics describing the tree of life.
• Advisors: Prof. Dr. Tanja Stadler and Prof. Dr. Sebastian Bonhoeffer

03.2006 – 12.2009

Bachelor in Biology: Conservation Biology

Federal University of São Carlos – campus Sorocaba, UFSCAR, Brazil

• Investigation of the artificial night lighting influence in firefly (Coleoptera: Lampyridae, Elateridae) occurrence on the UFSCar campus Sorocaba.
• Advisors: Prof. Dr. Vadim Viviani and Prof. Dr. Marcelo Nivert

01.2005 – 12.2007

Vocational and Technical Education: Informatics – Communications Networking

SENAI Swiss-Brazilian – Regional Department of São Paulo, SENAI/DR/SP, Brazil

• Biodiversity Modeling
• Conservation Biology
• Environmental Sciences
• Eco-evolutionary Dynamics

 T Keggin, C Waldock, A Skeels A, O Hagen, C Albouy, S Manel, L Pellissier (2023) Diversity across organisational scale emerges through dispersal ability and speciation dynamics in tropical fish. BMC Biology

LM Boschman, FAS Cassemiro, L Carraro, J deVries, F Altermatt, O Hagen, C Hoorn, L Pellissier (2023) Freshwater fish diversity in the western Amazon basin shaped by Andean uplift since the Late Cretaceous. Nature Ecology & Evolution

A Skeels, LM Boschman, IR McFadden, EM Joyce, O Hagen, O Jiménez Robles, W Bach, V Boussange, T Keggin, W Jetz, L Pellissier (2023) Paleoenvironments shaped the exchange of terrestrial vertebrates across Wallace’s Line. Science

 O Hagen (2023) Coupling eco-evolutionary mechanisms with deep-time environmental dynamics to understand biodiversity patterns. Ecography

X Li, X Xiang, F Jabbour, O Hagen, RC Ortiz, PS Soltis, DE Soltis, W Wang (2022) Biotic colonization of subtropical East Asian caves through time. PNAS

A Skeels, W Bach, O Hagen, W Jetz, L Pellissier (2022) Temperature-dependent evolutionary speed shapes the evolution of biodiversity patterns across tetrapod radiations. Systematic Biology

L Lyu, F Leugger, O Hagen, F Fopp, LM Boschman, JS Strijk, C Albouy, DN Karger, P Brun, Z Wang, NE Zimmermann, L Pellissier (2022) An integrated high‐resolution mapping shows congruent biodiversity patterns of Fagales and Pinales. New Phytologist

O Hagen*, A Skeels*, RE Onstein, W Jetz, L Pellissier (2021) Earth history events shaped the evolution of uneven biodiversity across tropical moist forests. PNAS

GFA Donati, N Zemp, S Manel, M Poirier, T Claverie, F Ferraton, T Gaboriau, R Govinden, O Hagen, S Ibrahim, D Mouillot, J Leblond, P Julius, L Velez, I Zareer, A Ziyad, F Leprieur, C Albouy, L Pellissier (2021) Species ecology explains the spatial components of genetic diversity in tropical reef fishes. Proceedings of the Royal Society B: Biological sciences

O Hagen, B Flueck, F Fopp, JS Cabral, F Hartig, M Pontarp, TF Rangel, L Pellissier (2021) gen3sis: A general engine for eco-evolutionary simulations of the processes that shape Earth’s biodiversity. PLoS biology