Publications de Hannes Markus Peter

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

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

Informa UK Limited2025

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

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

Nicola Deluigi, Tom Ian Battin, Hannes Markus Peter, Grégoire Marie Octave Edouard Michoud, 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

Diversity of lake bacteria promotes human echovirus inactivation

Tamar Kohn, Hannes Markus Peter

Human enteric viruses can remain infective in surface waters for exten ded periods of time, posing a public health risk. Microbial activity contributes to the inactivation of waterborne enteric viruses, but while individual bacteria-virus interac tions hav ...

2025

Glacier influence shapes the genomic architecture of the downstream aquatic microbiome

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

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

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

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

Nicola Deluigi, Leïla Ezzat, Vincent Henri De Staercke, Tom Ian Battin, Paraskevi Pramateftaki, Hannes Markus Peter, Matteo Tolosano, Michail Styllas, Tyler Joe Kohler, Stylianos Fodelianakis, Massimo Bourquin, Martina Andrea Schön, Grégoire Marie Octave Edouard Michoud, Florian Baier

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

Widespread Black Carbon Deposition of Varied Origin Exported From Glaciers

Tom Ian Battin, Hannes Markus Peter

Atmospheric deposition delivers carbon to glacier surfaces, including from fossil fuel and biomass combustion. Nonetheless, spatial variation in the sources of organic and black carbon deposited on glaciers is poorly understood, along with their role in dr ...

AMER GEOPHYSICAL UNION2025

Global emergent responses of stream microbial metabolism to glacier shrinkage

Nicola Deluigi, Tom Ian Battin, Hannes Markus Peter, Michail Styllas, Tyler Joe Kohler, Massimo Bourquin

Most cryospheric ecosystems are energy limited. How their energetics will respond to climate change remains largely unknown. This is particularly true for glacier-fed streams, which interface with the cryosphere and initiate some of Earth's largest river s ...

Nature Portfolio2024

Gradients of Deposition and In Situ Production Drive Global Glacier Organic Matter Composition

Vincent Henri De Staercke, Tom Ian Battin, Hannes Markus Peter, Matteo Tolosano, Michail Styllas, Martina Andrea Schön

Runoff from rapidly melting mountain glaciers is a dominant source of riverine organic carbon in many high-latitude and high-elevation regions. Glacier dissolved organic carbon is highly bioavailable, and its composition likely reflects internal (e.g., aut ...

2024

Deciphering the biosynthetic landscape of biofilms in glacier-fed streams

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

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

The cost of adaptability: resource availability constrains functional stability under pulsed disturbances

Hannes Markus Peter

Global change exposes ecosystems to changes in the frequency, magnitude, and concomitancy of disturbances, which impact the composition and functioning of these systems. Here, we experimentally evaluate the effects of salinity disturbances and eutrophicati ...

Amer Soc Microbiology2024

Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes

Hannes Markus Peter

Climate change induced shifts in treeline position, both towards higher altitudes and latitudes induce changes in soil organic matter. Eventually, soil organic matter is transported to alpine and subarctic lakes with yet unknown consequences for dissolved ...

Nature Portfolio2024

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

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

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

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

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

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

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

A Tropical Cocktail of Organic Matter Sources: Variability in Supraglacial and Glacier Outflow Dissolved Organic Matter Composition and Age Across the Ecuadorian Andes

Vincent Henri De Staercke, Tom Ian Battin, Hannes Markus Peter, Matteo Tolosano, Michail Styllas, Martina Andrea Schön

The biogeochemistry of rapidly retreating Andean glaciers is poorly understood, and Ecuadorian glacier dissolved organic matter (DOM) composition is unknown. This study examined molecular composition and carbon isotopes of DOM from supraglacial and outflow ...

AMER GEOPHYSICAL UNION2023

Glacier-Fed Stream Biofilms Harbor Diverse Resistomes and Biosynthetic Gene Clusters

Leïla Ezzat, Vincent Henri De Staercke, Tom Ian Battin, Paraskevi Pramateftaki, Hannes Markus Peter, Matteo Tolosano, Michail Styllas, Tyler Joe Kohler, Stylianos Fodelianakis, Massimo Bourquin, Susheel Bhanu Busi, Grégoire Marie Octave Edouard Michoud

Antimicrobial resistance is an omnipresent phenomenon in the anthropogenically influenced ecosystems. However, its role in shaping microbial community dynamics in pristine environments is relatively unknown. ...

AMER SOC MICROBIOLOGY2023

The role of phages for microdiverse bacterial communities in proglacial stream biofilms

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

Viruses modulate the diversity and activity of microbial communities. However, little is known about their role for the structure of stream bacterial biofilm communities. Here, we present insights into the diversity and composition of viral communities in ...

2023

The dark side of the moon: first insights into the microbiome structure and function of one of the last glacier-fed streams in Africa

Leïla Ezzat, Vincent Henri De Staercke, Tom Ian Battin, Paraskevi Pramateftaki, Hannes Markus Peter, Matteo Tolosano, Michail Styllas, Tyler Joe Kohler, Massimo Bourquin, Martina Andrea Schön, Grégoire Marie Octave Edouard Michoud

The glaciers on Africa's 'Mountains of the Moon' (Rwenzori National Park, Uganda) are predicted to disappear within the next decades owing to climate change. Consequently, the glacier-fed streams (GFSs) that drain them will vanish, along with their residen ...

ROYAL SOC2023