Publications de Grégoire Marie Octave Edouard Michoud

Glacier-fed stream diatoms (Bacillariophyta) from the Rwenzori Mountains, Uganda, with the description of one new species from the genus Neidium

Tom Ian Battin, Hannes Markus Peter, Grégoire Marie Octave Edouard Michoud, Leïla Ezzat, Massimo Bourquin

Informa UK Limited2025

Predicting climate-change impacts on the global glacier-fed stream microbiome

Tom Ian Battin, Hannes Markus Peter, Grégoire Marie Octave Edouard Michoud, Massimo Bourquin, Matteo Tolosano, Tyler Joe Kohler, Stylianos Fodelianakis, Vincent Henri De Staercke, Andrew Lean Robison

The shrinkage of glaciers and the vanishing of glacier-fed streams (GFSs) are emblematic of climate change. However, forecasts of how GFS microbiome structure and function will change under projected climate change scenarios are lacking. Combining 2,333 pr ...

NATURE PORTFOLIO2025

Experimental evidence on the impact of climate-induced hydrological and thermal variations on glacier-fed stream biofilms

Tom Ian Battin, Hannes Markus Peter, Grégoire Marie Octave Edouard Michoud, Nicola Deluigi, David Touchette, Martina Gonzalez Mateu

Climate change is predicted to alter the hydrological and thermal regimes of high-mountain streams, particularly glacier-fed streams. However, relatively little is known about how these environmental changes impact the microbial communities in glacier-fed ...

2025

Glacier influence shapes the genomic architecture of the downstream aquatic microbiome

Tom Ian Battin, Hannes Markus Peter, Grégoire Marie Octave Edouard Michoud, Massimo Bourquin

The factors and processes that shape microbial genomes and determine the success of microbes in different environments have long attracted scientific interest. Here, leveraging 2855 metagenome-assembled genomes (MAGs) sampled by the Vanishing Glacier Proje ...

Oxford University Press (OUP)2025

Mapping the metagenomic diversity of the multi-kingdom glacier-fed stream microbiome

Hannes Markus Peter, Grégoire Marie Octave Edouard Michoud, Massimo Bourquin, Matteo Tolosano, Vincent Henri De Staercke, Martina Andrea Schön

Glacier-fed streams (GFS) feature among Earth’s most extreme aquatic ecosystems marked by pronounced oligotrophy and environmental fluctuations. Microorganisms mainly organize in biofilms within them, but how they cope with such conditions is unknown. Here ...

2025

Diversity and biogeography of the bacterial microbiome in glacier-fed streams

Tom Ian Battin, Hannes Markus Peter, Grégoire Marie Octave Edouard Michoud, Leïla Ezzat, Massimo Bourquin, Nicola Deluigi, Matteo Tolosano, Florian Baier, Tyler Joe Kohler, Stylianos Fodelianakis

The rapid melting of mountain glaciers and the vanishing of their streams is emblematic of climate change1,2. Glacier-fed streams (GFSs) are cold, oligotrophic and unstable ecosystems in which life is dominated by microbial biofilms2,3. However, current kn ...

2025

Deciphering the biosynthetic landscape of biofilms in glacier-fed streams

Tom Ian Battin, Hannes Markus Peter, Grégoire Marie Octave Edouard Michoud, Leïla Ezzat, Tyler Joe Kohler

Glacier-fed streams are permanently cold, ultra-oligotrophic, and physically unstable environments, yet microbial life thrives in benthic biofilm communities. Within biofilms, microorganisms rely on secondary metabolites for communication and competition. ...

AMER SOC MICROBIOLOGY2024

Unexpected functional diversity of stream biofilms within and across proglacial floodplains despite close spatial proximity

Tom Ian Battin, Hannes Markus Peter, Grégoire Marie Octave Edouard Michoud, Tyler Joe Kohler, Jade Brandani

High-mountain streams are particularly vulnerable to climate change because they intimately interface with the cryosphere. As glaciers shrink and snowpack diminishes, proglacial streams will eventually shift from being glacier-fed to streams fed by groundw ...

American Society of Limnology and Oceanography2023

Cross-domain interactions confer stability to benthic biofilms in proglacial streams

Tom Ian Battin, Hannes Markus Peter, Grégoire Marie Octave Edouard Michoud, Leïla Ezzat, Massimo Bourquin, Tyler Joe Kohler, Jade Brandani, Stylianos Fodelianakis, Paraskevi Pramateftaki

Cross-domain interactions are an integral part of the success of biofilms in natural environments but remain poorly understood. Here, we describe cross-domain interactions in stream biofilms draining proglacial floodplains in the Swiss Alps. These streams, ...

2023

Homogeneous Environmental Selection Structures the Bacterial Communities of Benthic Biofilms in Proglacial Floodplain Streams

Tom Ian Battin, Hannes Markus Peter, Susheel Bhanu Busi, Grégoire Marie Octave Edouard Michoud, Leïla Ezzat, Massimo Bourquin, Jade Brandani, Tyler Joe Kohler, Stylianos Fodelianakis

Streams draining proglacial floodplains harbor benthic biofilms comprised of diverse microbial communities. These high-mountain ecosystems are rapidly changing with climate warming, and it is therefore critical to better understand the mechanisms underlyin ...

AMER SOC MICROBIOLOGY2023