James Bradley
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drbradbrad.bsky.social
James Bradley
@drbradbrad.bsky.social
Earth scientist 🌎
❄️ Polar & extreme environments
🦠 Geomicrobiology
🔬 Biogeochemistry

🇬🇧 in 🇫🇷 CNRS Chaire de Professeur Junior
🌊 Mediterranean Institute of Oceanography
☀️ Marseille, France

🇪🇺 ERC StG #ERC_SIESTA
🙋‍♂️ My views; He/him
🏳️‍🌈-ally
www.jbradleylab.com
Pinned
How do glaciers drive and interact with Earth's regional and global biogeochemical cycles? ❄️🏔️🦠🪨🌊🌎🧪⚒️

@natrevearthenviron.nature.com

Expertly led by Jon Hawkings & many collaborators

@mioceanologie.bsky.social @cnrs.fr @cnrs-dr12.bsky.social @cnrs-insu.bsky.social

www.nature.com/articles/s43...
Glacier biogeochemical cycling and downstream impacts - Nature Reviews Earth & Environment
Far from frozen and sterile environments, glaciers are biogeochemical reactors and regulators. This Review outlines key biogeochemical and associated physical processes occurring in glacierized enviro...
www.nature.com
Laura @lauramolares.bsky.social presenting her prize winning (!!) @hfspo.bsky.social @erc.europa.eu #ERC_SIESTA PhD research on the catabolic strategies of glacial microbiomes at the Polar & Alpine Microbiology Conference, thanks to support from @eageo.bsky.social ❄️🔬🦠🧬🏆 @mioceanologie.bsky.social
New on the EAG Blog: "Reflections from PAM 2026 by EAG Sponsored Student Laura Molares Moncayo". At the 10th International Conference on Polar & Alpine Microbiology held in Copenhagen, Laura shares her experiences and insights, read more here: buff.ly/qZcalWB
@lauramolares.bsky.social
February 17, 2026 at 8:40 PM
Reposted by James Bradley
🚨3 Lectureships in Biology 🚨

Come join us in Bristol @bristolbiosci.bsky.social!

We are looking for new collegues working across a broad spectum of topics in biology, including ecology & environmental change. Get in touch if you have Qs!

Apply here by 8 March: www.bristol.ac.uk/jobs/find/de...
February 12, 2026 at 9:10 AM
Reposted by James Bradley
#MicroSky: ENVIRON BIOTECH: Vidal et al discuss that deep beneath Earth’s surface, life thrives in extremes. Subsurface microbiology reveals the limits and origins of life, and guides the search for biosignatures on Mars, icy moons, and distant exoplanets. Do not miss doi.org/10.1111/1751...
February 6, 2026 at 11:02 AM
How do glaciers drive and interact with Earth's regional and global biogeochemical cycles? ❄️🏔️🦠🪨🌊🌎🧪⚒️

@natrevearthenviron.nature.com

Expertly led by Jon Hawkings & many collaborators

@mioceanologie.bsky.social @cnrs.fr @cnrs-dr12.bsky.social @cnrs-insu.bsky.social

www.nature.com/articles/s43...
Glacier biogeochemical cycling and downstream impacts - Nature Reviews Earth & Environment
Far from frozen and sterile environments, glaciers are biogeochemical reactors and regulators. This Review outlines key biogeochemical and associated physical processes occurring in glacierized enviro...
www.nature.com
February 10, 2026 at 7:04 AM
Reposted by James Bradley
Retreating glaciers have become focal points for climate awareness and for tourism.

This dual role exposes a paradox:

Tourism can amplify climate awareness, yet risks reinforcing maladaptive responses in the very landscapes it seeks to showcase.

www.nature.com/articles/s41...
Melting glaciers as symbols of tourism paradoxes - Nature Climate Change
Visitors are increasingly drawn to disappearing glacier landscapes for their beauty and scientific value. This Comment examines the paradoxes reshaping relationships among glaciers, people and communi...
www.nature.com
February 10, 2026 at 5:54 AM
Reposted by James Bradley
UK to cut climate finance to poor countries by a fifth despite promising more help

- Campaigners say proposed cut from £11.9bn over past five years to £9bn over next five years will cost lives and livelihoods

#climatecrisis
Story by @fionaharvey.bsky.social
www.theguardian.com/environment/...
UK to cut climate finance to poor countries by a fifth despite promising more help
Exclusive: Campaigners say proposed cut from £11.9bn over past five years to £9bn over next five years will cost lives and livelihoods
www.theguardian.com
February 6, 2026 at 10:53 AM
Reposted by James Bradley
Hydrostatic pressure induces strong leakage of dissolved organic matter from “marine snow” particles www.science.org/doi/full/10.... #jcampubs 🌊
Hydrostatic pressure induces strong leakage of dissolved organic matter from “marine snow” particles
Particles sinking into the deep ocean come under pressure and leak dissolved organic matter, which affects marine carbon cycling.
www.science.org
February 5, 2026 at 2:35 PM
Reposted by James Bradley
High-efficiency methane consumption by atmospheric methanotrophs in subsurface karst caves: The irrefutable methane sink www.science.org/doi/full/10.... #jcampubs
High-efficiency methane consumption by atmospheric methanotrophs in subsurface karst caves: The irrefutable methane sink
Microbes in subsurface caves consume trace amount of methane from the air.
www.science.org
February 5, 2026 at 2:34 PM
Reposted by James Bradley
We are advertising for a Lecturer in Physical Oceanography, closing date 31 March.

If you have research interests in the shelf seas, estuarine and coastal oceans then this could be for you!

And you could do research using UEA's fleet of ocean gliders

vacancies.uea.ac.uk/vacancies/20...
Lecturer in Physical Oceanography (ATR1734) in University of East Anglia | UEA
View details and apply for this Lecturer in Physical Oceanography (ATR1734) vacancy in University of East Anglia. Faculty of Science School of Environmental Sciences Lecturer in Physical Oceano...
vacancies.uea.ac.uk
February 3, 2026 at 1:03 PM
A deeper than usual dive into Svalbard's evolving geopolitical landscape, as the power grab in Arctic territories intensifies
@nytimes.com
www.nytimes.com/2026/01/11/w...
The Tug of War at the Top of the World
www.nytimes.com
February 2, 2026 at 12:57 PM
Reposted by James Bradley
I'm happy to share that this work - a part of my PhD - has been published.

We simulated H2 and CO2 injection on a model methanogen 🦠 & developped a fully transparent high pressure reactor for microbial cultures 🔧

link.springer.com/article/10.1...
January 27, 2026 at 11:28 PM
Strandline Glacier ❄️
Tethys Bay, Victoria Land, Antarctica 🇦🇶

#ERC_SIESTA #POLARIN @erc.europa.eu @hfspo.bsky.social @mioceanologie.bsky.social @cnrs.fr
January 27, 2026 at 11:03 AM
Sad that Antarctic fieldwork overlapped with Polar & Alpine Microbiology conference 🥲
but DAMN did #ERC_SIESTA @erc.europa.eu @hfspo.bsky.social @mioceanologie.bsky.social PhD students Sibylle Lebert & Laura Molares Moncayo do a superb job presenting & winning awards for best poster and talk! 🤩❄️🧬🦠🔬👩‍🔬
January 20, 2026 at 11:14 AM
Enormous congratulations to the new Doctor Sonia Papadaki! 🎓👩‍🔬 Extremely proud ☺️
Sonia combined molecular, geochemical & spectroscopic tools to reveal how microbes survive in Arctic gypsum rocks 🧬🧪🔬🐻‍❄️
And how their imprints can inform understanding of past life & future life-detection missions 🪐
January 19, 2026 at 10:15 AM
Reposted by James Bradley
This photo was taken in 1911 using glass plate technology by Herbert Ponting who was part of Scott's Antarctic expedition,

The composition and detail are exquisite with the band of white snow/ice creating a perfect frame around the two people and the ship in the distance

Iconic imo
January 17, 2026 at 7:12 AM
Reposted by James Bradley
I'm thrilled to share that this work has just been published:
onlinelibrary.wiley.com/doi/10.1111/...

We compared to contrasting observatories:

🌴 ☀️ Equatorial Atlantic (EAMO, 6°S), one of the first in low-latitudes

🍂 🌸 A well-studied temperate site (BBMO, 41°N) in the Mediterranean Sea

🧵⬇️
January 16, 2026 at 6:35 PM
Reposted by James Bradley
‘We are the last generation that can act!’ 🔥

Glaciers around the world are melting so fast that we need to store ice cores in a sanctuary so that the next generation of researchers will have raw material to study! 🧊🔬

The ICE MEMORY project facilities just opened 2 days ago in Antarctica!

📽️Via AFP
January 16, 2026 at 6:16 PM
Reposted by James Bradley
🏔️NEW in @natcomms.nature.com: “High frequency of moraine-dammed lake outburst floods driven by global warming”

www.nature.com/articles/s41...

🤔There’s been lots of uncertainty about whether the number of glacial lake outburst floods (GLOFs) has increased, decreased or flatlined in recent decades
December 18, 2025 at 9:24 AM
How do new soils develop after glaciers vanish? ❄️🧬🦠🏔️

The first microbial colonisers use flexible chemoautotrophic strategies to overcome nutrient scarcity, including scavenging H2, CO and CH4 from the air! ⛅

Led by Francesco Ricci, Sean Bay @greening.bsky.social

www.nature.com/articles/s41...
Metabolically flexible microorganisms rapidly establish glacial foreland ecosystems - Nature Communications
An enduring question in ecology is how new ecosystems form. Studying retreating glaciers, this study shows that life’s first foothold in these new environments is not established by photosynthetic org...
www.nature.com
January 16, 2026 at 4:08 AM
Reposted by James Bradley
Another year, another dark red stripe - the iconic climate stripes quietly show how relentlessly our planet is heating up…

www.reading.ac.uk/news/2026/Un...
January 14, 2026 at 6:41 PM
Reposted by James Bradley
Fabulous start to 2026 - it’s been great fun to share some surprises from our sampling of Arctic glaciers as well as meet old friends and new at polar & alpine microbiology. Haribo served in whirlpaks is definitely on-brand if you’re a veteran fieldworker... #PAM26
January 15, 2026 at 10:04 AM
Reposted by James Bradley
Have a look into this new publication, led by Pauline Le Coq and Christian Tamburini @ctambu.bsky.social with Lomic participation of Mireille Pujo-Pay and Olivier Crispi. How do particle-attached microbes contribute to the mesopelagic carbon budget?
www.nature.com/articles/s41...
Distinct contributions of suspended and sinking prokaryotes to mesopelagic carbon budget - Nature Geoscience
Genetic and isotopic analyses of samples from the northeast Atlantic reveal that suspended prokaryotic dark carbon fixation substantially fuels carbon inputs below the sunlit ocean, while particle-att...
www.nature.com
January 15, 2026 at 10:57 AM
Reposted by James Bradley
Our last publication by Pauline Le Coq et al. This work highlights the critical role of mesopelagic microbes (attached to sinking particles and those living freely or attached to suspended particles) in carbon cycling—a key advancement for refining climate models.
www.nature.com/articles/s41...
Client Challenge
www.nature.com
January 13, 2026 at 2:23 PM
Reposted by James Bradley
Globally, no single day in 2025 was cooler than its 1991-2020 average.
climate.copernicus.eu/global-clima...
January 14, 2026 at 12:44 PM