Welcome to the Microbial Oceanography Lab at the University of Vienna

Marine microbes are uniquely important to life and form the major pillars of the biosphere. Their unique metabolisms allow marine microbes to carry out many steps of the biogeochemical cycles that other organisms are unable to complete.

Microbial oceanography focuses on deciphering the metabolic activity of Bacteria and Archaea thriving in the open ocean and relating their community composition to the biogeochemical fluxes in the water masses. This requires an interdisciplinary approach linking microbial and molecular ecology to biogeochemistry and to large scale water mass transport studied in physical oceanography.

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Our main focus is the microbial oceanography of the deep ocean where the prokaryotic activity is relatively low compared to the euphotic zone. The deep ocean comprises about 70% of the total ocean volume and hence deep-water microbes mediate a substantial fraction of the biogeochemical cycles with thus far unknown metabolic pathways. We develop and improve available methods in molecular biology and biogeochemistry to make them usable in the most oligotrophic parts of the ocean. Then the information from biology and biogeochemistry is linked for a better understanding of how the microbial community might work in the dark ocean.

News

10.03.2026
 

After successfully defending his PhD, Daniel Martinovic-Saavedra joined the Microbial Oceanography Group as a postdoctoral researcher on Dr. Eduard...

News
09.03.2026
 

The project is led by Dr. Eduard Fadeev and funded by the Austrian Science Fund (FWF).

The project aims to expand our understanding of the production...

News
13.01.2026
 

Major contribution of particle-associated microbes to deep-sea organic carbon degradation

Publication
22.12.2025
 

We are happy to welcome Guanzhe as a PhD Student to the group! His research focuses on characterizing the diversity and community structure of active,...

News
09.12.2025
 

We are pleased to announce that Manuela Quiroga Pérez has successfully defended her MSc thesis.

 

Congratulations to Manuela, and best of luck for...

News
06.12.2025
 

Marine fungi are emerging as key yet understudied contributors to carbon turnover in the ocean. Zihao Zhao’s FWF project offers the first global...

News

Video Testimonials

Maria Pinto, PhD Student

Chie Amano, PostDoc