Forschungsprofil

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.

Wissenschaftlicher Werdegang

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

Forschungsbereiche

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

Ausgewählte Publikationen

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