Magnetotaxis in an anaerobic ciliate via tripartite syntrophy | PNAS www.pnas.org/doi/10.1073/...

Excited to see our article featured on the monthly cover of @plosbiology.org @drbradbrad.bsky.social @lmugeoumwelt.bsky.social

Arctic fjords are hotspots for carbon sequestration affected by global warming. In our last article, published in #PLoSBiology, we show that fungi living in Svalbard sediments efficiently assimilate labile DOM and retain it as microbial biomass, rather than allowing it to be rapidly respired.

🌊 Over the past 50 years, the global oxygen content of the #oceans has declined by two percent – mainly due to climate change. #LMU biogeochemist Dr. Gonzalo Gomez Saez is investigating how microorganisms respond to oxygen depletion. 🔬 #LMUMunich #ClimateChange

Climate change: how oxygen deficiency changes metabolic processes in the ocean

A new study reveals how sulfur compounds are metabolized under oxygen-deficient conditions – and which microorganisms are responsible.

lmu.de

Many ocean microbes have the genetic potential of consuming taurine, a key organosulfur compound, but it is unclear how this activity is linked to the worldwide decline in oxygen levels. Here, we found by 13C-DOS qSIP that taurine was only used as a C source in hypoxic waters of the Mariager Fjord.

Hypoxia increases microbial carbon assimilation of taurine in a seasonally anoxic fjord academic.oup.com/ismej/advanc... #jcampubs 🌊

The world’s oceans are losing oxygen—one of the most serious consequences of climate change. 🌊 But what impact does this have on microorganisms and organic matter cycles?🚢 To find out, biogeochemist @ggomezsaez.bsky.social and his team are traveling to Jutland:

Climate change: when the ocean runs out of oxygen

Oxygen levels are low in many ocean regions. How does this affect organic matter cycling and microorganisms? In search of an answer, biogeochemist Gonzalo Gomez Saez journeyed by ship to Jutland.

lmu.de

#Climatechange: when the ocean runs out of oxygen Press article on our last expedition aboard #RV_Aurora, sampling the water column and sediments of the seasonally anoxic #MariagerFjord. Thank you #LMUpress and Dr. Dominic Anders! Link: www.lmu.de/en/newsroom/... @lmugeoumwelt.bsky.social

Climate change: when the ocean runs out of oxygen

Oxygen levels are low in many ocean regions. How does this affect organic matter cycling and microorganisms? In search of an answer, biogeochemist Gonzalo Gomez Saez journeyed by ship to Jutland.

lmu.de

Read about our cruise last year to Mariager Fjord with @ggomezsaez.bsky.social at www.lmu.de/en/newsroom/...

Climate change: when the ocean runs out of oxygen

Oxygen levels are low in many ocean regions. How does this affect organic matter cycling and microorganisms? In search of an answer, biogeochemist Gonzalo Gomez Saez journeyed by ship to Jutland.

lmu.de

If you work on interdisciplinary approaches connecting biogeochemistry and geomicrobiology, you are welcome to our session at #Goldschmidt2026 in Montreal. Abstracts submission deadline: February 26th.

Great week of lab work in 🇩🇰 #Denmark, learning from Prof. Bø Thamdrup how to work with radioactive isotopes. Many thanks to everyone at the impressive labs of #SDU – #UniversityofSouthernDenmark It’s always a pleasure to continue collaborating with the #DeoxyMar team - to be continued!

Back on land after the #DeoxyMar expedition. Real pleasure to work as Chief Scientist aboard the #RV_Aurora alongside Captain Torben Vang and his excellent crew. Grateful as well to the brilliant team of scientists from #Germany, #Denmark and #Sweden - can´t wait to start diving into the data!

Open PhD position in my group to start relatively soon: Deadline to apply: 31.08.2025 Thanks for sharing! job-portal.lmu.de/jobposting/0...

Researchers at #LMU, led by William Orsi, simulated ancient hydrothermal systems in the #lab. The archaeon 'Methanocaldococcus jannaschii' grew without added nutrients, using hydrogen from iron-sulfur reactions—possibly mimicking early life on Earth. Read more: #Geobiology #EarlyLife #Archaea

Geobiology: iron, sulfur, heat – and first life

The very first cells obtained their energy from geochemical reactions. LMU researchers have now managed to recreate this ancient metabolic process in their laboratory.

lmu.de

Organosulfur compounds play a key role in marine sediments worldwide. In this study, we combined qSIP and GC-QMS to identify active uncultivated microbes driving organosulfur cycling from taurine and methionine. The open-access pdf can be downloaded here: academic.oup.com/ismecommun/a...

Back in 2019 we screened an obscure lineage of bacteria for a side project and noticed something quite unusual. A quinone, used in cellular electron transport, that looked similar to the type used by plants and algae to perform photosynthesis.

Extreme temperature anomalies in the high Arctic continue. It’s mid-winter & it’s 4°C 🌡️ On a normal year we commonly have temperatures down to -20°C & a thick snowpack ❄️ But this winter the northernmost settlement in the world is a melting ice rink & snow on the tundra is vanishing before our eyes 😰

James Bradley@drbradbrad.bsky.social · last yr.

Meanwhile our research continues - here we’re measuring gas composition of the snowpack of Austre Brøggerbreen glacier. Shallow snow with many ice layers, telling us that today’s warmth and rain hasn’t been a one-off. Working in the few hours of low light and otherwise in total darkness #ERC_SIESTA

Two weeks left on our cruise to the Oxygen Minimum Zone off the coast of Chile... content is coming out! Cameos from Laura Bristow, Osvaldo Ulloa and Chief Scientist Maria Pachiadaki (@microbiaki.bsky.social) www.youtube.com/watch?v=fGi6...

Exploring an Invisible World in the Ocean | Microbes in Oxygen Minimum Zones - Week 1

Oxygen Minimum Zones, or OMZs, are areas in the water column with less oxygen, primarily due to naturally occurring physical and biological processes within ...

youtube.com

If you work on interdisciplinary approaches connecting biogeochemistry, ´omics and modelling, you are welcome to our session at #Goldschmidt2025 in Prague. Abstracts submission deadline: February 26th.