Could rising antimicrobial activity in warmer soils make microbes less efficient at using carbon & push more CO₂ into the atmosphere? 🦠📈💊 Our new work in @isme-microbes.bsky.social explores how the combined effects of warming & AMR may alter microbial C processing 🧵👇 academic.oup.com/ismej/articl...

A real pleasure to give an invited talk at the 8th International Symposium on Arctic Research in Hachioji, Tokyo 🇯🇵 on @hfspo.bsky.social @erc.europa.eu #ERC_SIESTA research exploring glacier & atmosphere microbiome connectivity @mioceanologie.bsky.social @cnrs-insu.bsky.social ❄️🦠☁️🧬

Postdoc vacancy: Microbial dormancy in the cryosphere @erc.europa.eu #ERC_SIESTA 📢 PLEASE RT 🧬 Single cell microbial activity measurements, flow cytometry, cell sorting, omics, ecological interpretation ☀️ Marseille, France ‼️ Apply ASAP & before 7 Nov Link: emploi.cnrs.fr/Offres/CDD/U...

Looking forward to hosting Dominik Hülse at @mioceanologie.bsky.social in Marseille in a couple of weeks ☀️🌊🌍

Postdoc vacancy: Microbial dormancy in the cryosphere @erc.europa.eu #ERC_SIESTA 📢 PLEASE RT 🧬 Single cell microbial activity measurements, flow cytometry, cell sorting, omics, ecological interpretation ☀️ Marseille, France ‼️ Apply ASAP & before 7 Nov Link: emploi.cnrs.fr/Offres/CDD/U...

I'm delighted our paper is out: doi.org/10.1093/isme... With new SAR11 isolate genomes and time-series metagenomes, we reveal coastal and offshore SAR11 ecotypes, identify associated metabolic traits, and pinpoint selective gene sweeps as a likely evolutionary driver to niche partitioning. 🌊🦠

Third and final field site ⛅🇨🇴 Páramo of Iguaque ⛰️ Challenging 3 hour sunrise climb at ~3,600 m.a.s.l. carrying batteries, tripods, samplers, PPE - but so worth it to sample amongst the frailejones 🤩 Hugely grateful to Santuario de Flora y Fauna de Iguaque for allowing us to work in this sacred place

Thank you Mailyn Gonzalez for hosting us @ Instituto Humboldt Bogotá 🌿 Honoured to share our work with your conservation genetics lab 🧬 whilst sampling the aeromicrobiome from the institute's beautiful grounds ⛅ @hfspo.bsky.social @mioceanologie.bsky.social @erc.europa.eu @cnrs.fr

Some wildlife highlights while air sampling in Meta, Colombia 🇨🇴

From early morning set up to successful evening sample recovery – two back-to-back 4-hour air sampling runs at the Ecoreserva ASA "La Guarupaya” in Meta 🌿 with Laura Molares Moncayo @mioceanologie.bsky.social @nhm.org @qmulsse.bsky.social & Mailyn Gonzalez @ Instituto Humboldt, Bogotá

Last call for applications! Please send to any bioinformatics Masters students seeking an internship ❄️🧬 🦠

Buenas dias Colombia 🇨🇴 With it's equatorial setting & topographical complexity, we're sampling the aeromicrobiome across a steep altitude gradient from the savanna to the páramo ☁️🦠⛰️ First site: Ecoreserva ASA "La Guarupaya” in Meta, 400 m.a.s.l. 🌿 Collab. with Mailyn Gonzalez @ Instituto Humboldt

Please circulate among your bioinformatics students! 🧬🖥️❄️🦠

‼️ PhD opportunity: Linking antimicrobial resistance, climate warming, and carbon use efficiency in Arctic soils With @matehg.bsky.social @ UEA, also me & Marc Dumont. Work at the intersection of antimicrobial resistance, Arctic soil microbiology, C cycling, & climate warming 🦠❄️🧬😷 Apply below 👇

2 Postdoc vacancies: Microbial dormancy in the cryosphere @erc.europa.eu #ERC_SIESTA 📢 PLEASE RT Experimental: 🧬 Single cell microbial activity measurements, flow cytometry, omics, biogeochem Modelling: 🖥️ Bioenergetics, thermodynamics, ecological, biogeochem ☀️ Marseille, France ‼️ Apply by 30 Sept

Please circulate among your bioinformatics students! 🧬🖥️❄️🦠

📢 PLEASE RT! ❄️ M2 Masters Internship: Metagenomic analysis of microbial cold adaptation in the cryosphere 🧬 Compile & curate ice nucleation & cold-adaptation protein database 🖥️ Build HMM profiles 🦠 Analyze existing metagenomic data using HMMs ☀️ Marseille, France Apply by 15 Oct

📢 PLEASE RT! ❄️ M2 Masters Internship: Metagenomic analysis of microbial cold adaptation in the cryosphere 🧬 Compile & curate ice nucleation & cold-adaptation protein database 🖥️ Build HMM profiles 🦠 Analyze existing metagenomic data using HMMs ☀️ Marseille, France Apply by 15 Oct

2 Postdoc vacancies: Microbial dormancy in the cryosphere @erc.europa.eu #ERC_SIESTA 📢 PLEASE RT Experimental: 🧬 Single cell microbial activity measurements, flow cytometry, omics, biogeochem Modelling: 🖥️ Bioenergetics, thermodynamics, ecological, biogeochem ☀️ Marseille, France ‼️ Apply by 30 Sept

"Polar geoengineering proposals raise false hopes for averting some disastrous consequences of climate change without rapidly cutting,,emissions" "They risk encouraging complacency about the urgency of achieving net zero or may be used by powerful actors as an excuse to justify continued emissions"

More and more time, money and attention is going toward foolish and risky ventures that divert attention from cutting CO2 emissions ...

link with further details: euraxess.ec.europa.eu/jobs/372103

Successfully defended my Habilitation à Diriger des Recherches (HDR - France's highest academic qualification) at @mioceanologie.bsky.social on Monday. Thanks to all who attended and especially the committee 😃🎓🌎🧬❄️🦠🌊

An assumption we long had in Earth Sci was that, in the geological past, more diversity meant more life in general. Someone finally got around to checking that, and it works! Biomass patterns follow the biodiversity curve. 🧪⚒️ Link: www.cell.com/current-biol...

Our story about microbial methane is out! We found that reducing the expression of a key gene of methanogenesis modulates the isotopic composition of the methane: www.science.org/doi/10.1126/... Check out also the coverage at the UC Berkeley News website: news.berkeley.edu/2025/08/14/s...

Thinking about the limits to microbial life in TLaM ... 🧪🧫 #philsci open.substack.com/pub/thinkmic...

1/3 Electricity from air! In the top journal Nano Energy today, we report the first fuel cell that makes power from air alone. We achieved this by using the enzyme Huc to oxidize ambient hydrogen. This results in a continuous low-level power from air and higher outputs with industrial waste gases.

Check this nice first first-author paper by Ning Hall—now out in Nature Geoscience! Our team had a blast supporting Ning on the isolation workflow, and a few of the standout Methanococcoides strains even trace back to our Danish waters. 🌊 www.nature.com/articles/s41...

Masterpiece paper from Ning, Perran, Amelia and co! Great mix of field-based geochemistry, laboratory manipulations, methanogen cultivation, and isolate / environmental genomics. An unexpected feedback between eutrophication and climate change that could shake up how we think about methane budgets.

We know tiny life-forms like bacteria float through our atmosphere. But do they also proliferate and form communities there? New research suggests a modeling approach that could help answer this question. eos.org/research-spo...

Does the atmosphere harbour a resident, growing microbial ecosystem? ⛅ Our @jgrbiogeo.bsky.social article is covered in @eos.org access via the link below 👇 @drmartinezrabert.bsky.social @mioceanologie.bsky.social @cnrs.fr @cnrsecologie.bsky.social @cnrs-insu.bsky.social

Does the atmosphere harbour a resident, growing microbial ecosystem? ⛅ Here in @jgrbiogeo.bsky.social we outline how theoretical tools 📝 & modelling 💻 can bring us closer to the answer Congrats lead author @drmartinezrabert.bsky.social @mioceanologie.bsky.social 🧵 thread 👇 tinyurl.com/7pdfm7uw

Walking over millions of years of history, preserved in Svalbard’s rocks. Not a bad haul so far 🍃🪸 #ERC_SIESTA

Melting over 80.6% of the area of the Greenland Ice Sheet. This is the highest value in our data set, which starts in 1981. @polarportal.bsky.social

Our article showing energy production from air alone is in PNAS today. This paper provides an ultimate biochemical proof that microbes can survive simply by 'making' energy from air (making two ATP per molecule atmospheric H2 consumed) and has biotech applications. www.pnas.org/doi/10.1073/...

Friday nights in the field lab: incubations running. #ERC_SIESTA fieldwork Svalbard @reymourot.bsky.social @drmartinezrabert.bsky.social @mioceanologie.bsky.social

Team #ERC_SIESTA in Svalbard ❄️🧬🐻‍❄️🦠🏔️🌎🔬 @reymourot.bsky.social @drmartinezrabert.bsky.social @mioceanologie.bsky.social

I'll defend my HDR (Habilitation à diriger des recherches) on 1st September at @mioceanologie.bsky.social 🦠❄️🌊⛰️🌨️🧬🔬🌡️✨

“These are no longer future scenarios. They’re our present conditions.”

Pesquisador James Bradley - @drbradbrad.bsky.social - esteve em pleno #inverno no arquipélago, que apresenta um #degelo de seis a sete vezes maior do que a média global, e escancara o #impacto assustador das #mudançasclimáticas no #Ártico

www.nature.com/articles/s41... Arctic winter is changing fast. In February 2025, #Svalbard saw rain, thawing tundra, and pooling meltwater. The comment by Bradley and co-authors shows how winter #warming is reshaping #polar ecosystems—and why this is the new #Arctic.

"If we remove nodules from the seabed, we do not know what we lose, only that it's lost forever”

🌡️ Svalbard’s melting winters A new study shows February 2025 brought record warmth & rain to Svalbard, melting snow in the heart of winter. Once rare, winter thaws like this are becoming common, reshaping the Arctic & warning the world. 🔗 www.nature.com/articles/s41... #SciComm #ClimateCrisis 🧪

A plangent comment by @drbradbrad.bsky.social & co on the impacts of a winter warmer. It can rain in any month in Svalbard, but these happen more and more, and as more start studying winter ecology, their impacts become more noticeable. www.nature.com/articles/s41...

Svalbard winter warming is reaching melting point ->Nature | More info from EcoSearch

Winter temps in Svalbard above freezing for half of Feb.; new @nature.com paper shows the impacts. “When winter warming crosses the 0 °C threshold, it marks more than just a warm anomaly — it signals a fundamental shift in Arctic winter dynamics.” 🧪❄️ www.nature.com/articles/s41...

Svalbard winter warming is reaching melting point ...with February 2025 seeing record-high temperatures and rainfall that caused widespread snowmelt. More frequent winter thaws are transforming the landscape, signalling a dramatic shift towards a new Arctic. www.nature.com/articles/s41...

"The gear I packed felt like a relic from another climate." – @drbradbrad.bsky.social‬, on a shocking February in #Svalbard. The new Nature Comms commentary reveals the #Arctic winter reaching its melting point, with widespread thaw & vegetation bloom. Read more: www.nature.com/articles/s41...