Microbial Ecologist

Taylor Priest

Institute of Microbiology, ETH Zürich · NOMIS–ETH Postdoctoral Fellow

I am a microbial ecologist that studies the adaptation, diversification and dynamics of microbes across environmental gradients.

Portrait of Taylor Priest
My Journey

From childhood fascination to active research

I've been captivated by the diversity of life on Earth since childhood, when nature documentaries such as Blue Planet first sparked my imagination. That fascination eventually led me to Plymouth University to study Marine Biology and Physical Oceanography. It was a single microbiology lecture, though, that changed everything, revealing an entire world of life I had barely considered before. Determined to learn more, I moved to the Max Planck Institute in Bremen for a master's in Marine Microbiology, where eighteen months of steep learning revealed just how little I'd understood about the microbial world, and made clear this was where I wanted to spend my career. A PhD in the same department followed, focused on characterising microbial life at the boundary between the Arctic and Atlantic Oceans. From there, I moved to ETH Zürich as a postdoctoral researcher, where my research grew beyond the oceans to where it remains today: asking how microbial life across Earth's biomes has diversified, adapted and evolved.

Research

Eco-evolutionary dynamics of microbial life

Microorganisms are the most abundant and diverse living entities on the planet, thriving in every imaginable environment, from deep-sea hydrothermal vents to arid deserts. Over billions of years, they have evolved remarkable adaptations that allow them to flourish in these varied ecosystems, shaping the world as we know it.

As a microbial ecologist, I seek to understand the extent and structuring of microbial diversity on Earth today, and how it diversifies and adapts in response to environmental conditions. My research began by combining fieldwork, molecular techniques, and bioinformatics to address these questions from the ground up; more recently, it has evolved toward global-scale metagenomic analysis combined with advanced statistical approaches and the development of new computational frameworks to elucidate patterns and resolve biological signals.

Patterns

Structuring of the taxonomic and functional diversity of microbiomes | Dynamics of microbes across environmental gradients | Genomic adaptations - mutations to gene content | Sub-species diversification

Drivers

Physicochemical gradients | Interactions with mobile genetic elements

Guiding questions
  1. 01 How is microbial diversity structured and what are the processes that shape this over space, time and environmental gradients?
  2. 02 What are the mechanisms through which adaptation and diversification proceed, and how are these shaped by ecological and evolutionary processes across different environmental contexts?
  3. 03 What role do mobile genetic elements play in shaping adaptation and ecological diversification?
Selected Publications

From the Arctic ocean to cross-ecosystem patterns

Nature · 2026
Coral microbiomes as reservoirs of unknown genomic and biosynthetic diversity
Wiederkehr, F., Paoli, L., … Priest, T., et al.
ISME Communications · 2026
Active microbial communities and their extrachromosomal elements link organic matter degradation to methane cycling in anoxic sediments
Dede, B., Zehnle, H., Skoog, E., Priest, T., et al.
Cell Host & Microbe · 2026
Variations in the latitudinal diversity gradients of the ocean microbiome
Eriksson, D., Schiller, J., Schickele, A., Priest, T., et al.
BioRxiv · 2025 — under review.
The JEDI marker as a universal measure of planetary biodiversity
Priest, T., Henry, N., Weber, T., et al.
Nature Communications · 2025
Arctic Ocean virus communities and their seasonality, bipolarity, and prokaryotic associations
Calayag, A.M., Priest, T., Oldenburg, E., et al.
Nature Communications · 2025
Seasonal recurrence and modular assembly of an Arctic pelagic marine microbiome
Priest, T., Oldenburg, E., Popa, O., et al.
ISME Communications · 2023
Spatial heterogeneity in carbohydrates and their utilisation by microbial communities in the high North Atlantic
Priest, T., Vidal-Melgosa, S., Hehemann, J., et al.
The ISME Journal · 2023
Variations in Atlantic water influx and sea ice cover drive taxonomic and functional shifts in Arctic marine bacterial communities
Priest, T., Von Appen, J., Oldenburg, E., et al.
The ISME Journal · 2022
Niche partitioning of the ubiquitous and ecologically relevant NS5 marine group
Priest, T., Heins, A., Harder, J., et al.
PeerJ · 2021
Microbial metagenome-assembled genomes of the Fram Strait from short and long read sequencing platforms
Priest, T., Orellana, L. H., Huettel, B., et al.
Environmental Microbiology · 2021
Diversity and biomass dynamics of unicellular marine fungi during a spring phytoplankton bloom
Priest, T., Fuchs, B., Amann, R., Reich, M.
Beyond Publications

Fieldwork, recognition & service

Expeditions
Arctic Seafloor Integrity cruise
2020
RV Maria S. Merian, cruise no. MSM95
Permafrost Carbon in the Beaufort Sea (PeCaBeau)
2022
RV CCGS Amundsen, cruise no. AMD1204
Awards & Grants
NOMIS–ETH Postdoctoral Fellowship
2024–present
FEMS Microbiology Ecology Lecture Prize
2022
9th International Conference on Polar and Alpine Microbiology
MARMIC Teaching Excellence Award
2021–2022
International Max Planck Research School for Marine Microbiology
Professional Service
Executive Board & Steering Committee
Tara Oceans Foundation, 2025–present
Secretary
SeqCode Reconciliation Committee, 2023–present
Chair
Gordon Research Seminar for Marine Microbes, 2026
Session Chair
European Society for Evolutionary Biology Conference, 2025
Get in touch

Say hello

Download full CV (PDF)