The Great Decoupling 2: Changes in Ocean Biochemistry Driven by Strengthening Stratification As the ocean carbon sink flattens, new research reveals how the biochemical impacts of warming and stratification are fundamentally compromising the sea’s ability to sustain life and regulate climate.

open.substack.com/pub/drtomhar... The very #Chemistry of our #Oceans is changing radically #Acidification #Deoxygenation #Huge #DeadZones expanding around our continents It's the oceans that produce over 50% of the #Oxygen we breathe Over HALF! And it's measurably declining 🧐 #Collapse #Aware🌡️📈🔥🌏🌎🌍💔

A novel silane-driven reductive #deoxygenation of ketones by Makoto Onaka & co-workers delivers either olefins or methylenes with high selectivity⚗️ Using H-montmorillonite, the method even gives direct 1,2-dibromides — no olefin isolation needed 🔬🚀

👉 buff.ly/nkHwz7Y

Biogeochemical processes in #Baltic Sea sediments as a recorder of environmental change over the Holocene #deoxygenation #vivianite #methane @ribesresearch.bsky.social @carolineslomp.bsky.social et alwww.sciencedirect.com/science/article/pii/S002...

Satellites reveal widespread deoxygenation of large global reservoirs from 1984 to 2023 - Scientific Reports Dissolved oxygen (DO) in reservoirs regulate biodiversity, nutrient biogeochemistry, water quality, and greenhouse gas emissions. Maintaining healthy DO levels is essential for achieving United Nation...

Satellites reveal widespread #deoxygenation of large global reservoirs from 1984 to 2023 link.springer.com/article/10.1...

Where as Exogenic (external) pressures: We cannot manage these at a regional level. For example, the large-scale impacts of global climate change, such as #oceanwarming, #acidification, and #deoxygenation in the wider North Atlantic.

Oxygen Analyzing - pascom.com.au We provide specialized de-oxygenation services and precise measurement of low dissolved oxygen levels using advanced techniques & equipment.

Accuracy you can measure. Reliability you can trust.

Learn more at: pascom.com.au/oxygen-analy...

#OxygenAnalysis #DissolvedOxygen #IndustrialServices #Deoxygenation #OilAndGas #WaterTreatment #Pascom #Australia

Prof. Michael P. Doyle & L. De Angelis (UTSA) highlight how 1,2,3-triazine 1-oxides provide a powerful platform for constructing diverse #heterocycles. From nucleophilic substitution & #deoxygenation to Diels–Alder #reactions and more!

🔗 Read the graphical review: bit.ly/48qm7Jg
#ChemSky #Synthesis

The great ocean destabilisers Over the past three years, Back to Blue has detailed the growing threat that ocean acidification (OA) poses to marine ecosystems. We have also described how OA contributes to the loss of marine biodiv...

THE GREAT OCEAN DESTABILISERS: PML’s Prof Helen Findlay joins global experts exploring how multiple human-driven stressors - from increasing #OceanAcidification and #deoxygenation, to #pollution and #overfishing - combine to weaken ocean health.

Read here: backtoblueinitiative.com/the-great-oc...

Postdoctoral Scholar Program - Woods Hole Oceanographic Institution Eighteen-month Postdoctoral Scholar awards are offered to recipients of new or recent doctorates in the fields of chemistry, engineering, geology, geophysics, mathematics, meteorology, physics, and bi...

🌊Exciting opportunity @whoi.edu! The WHOI’s Postdoctoral Scholar Program supports innovative ocean science and interdisciplinary reseearch. If you are interested in marine microbiology, computational biology, biogeochemistry or modelling, get in touch! #Bioinformatics #Deoxygenation #Microbiology

Deoxygenation, Carbon Uptake, and Acidification in the Oceans around Canada As part of the Pacific Climate Seminar Series, Dr. Roberta Hamme will be delivering a talk on Deoxygenation, Carbon Uptake, and Acidification in th...

Talk of interest this week from the Pacific Institute for Climate Solutions Seminar Series:

Deoxygenation, Carbon Uptake, and Acidification in the Oceans around Canada - Dr. Roberta Hamme, UVic

events.uvic.ca/pcic/event/1...

#OceanAcidification #Deoxygenation #MarineCarbon

As a EuroGO-SHIP’s Key Exploitable Result 🌟, this study focussed on how improvements in #dataquality and #coverage will result in better assessment of trends in #ocean #nutrient changes, #deoxygenation and #acidification 🤔📈

Check it out: eurogo-ship.eu/science-hub/...

@horizoneu.bsky.social #REA

☀️Anthore-Dalion @lanthoredalion.bsky.social & co-workers report a Re(I) photocatalyst enabling ultra-fast (<5 min) #deoxygenation of N-heterocyclic & alkyl N-oxides💡Air-tolerant, scalable, and highly functional group-friendly⚡️
#rhenium #photocatalysis

👉 buff.ly/Wj7cEWT

A photograph of Dr. Raja Ganeshram on stage at ICP15 at IISc, Bengaluru, under a spotlight, with a screen in the middle of the photo entitled "Climate forcing on Ocean De-oxygenation"

Raja Ganeshram delivered yesterday's plenary lecture on #ocean #deoxygenation variability & showcased some amazing decadal-scale #nitrogen isotope δ¹⁵N records across multiple (de)glacial #climate states. #ICP15

Our Future Science Brief on #Ocean oxygen unpacks the commonly-heard phrase "every second breath we take comes from the Ocean" as well as making science and policy recommendations to address Ocean #deoxygenation . Read it here to find out more: www.marineboard.eu/publications...

Register👉 bit.ly/4oTTo5V for #GO2NE webinar 41 on 🌊 #ocean #deoxygenation
23 September 1600 CEST

Speakers:
Yvette Heimbrand

Benjamin Walther
@bendw.bsky.social

Moderator: Karin Limburg
Topics below! 👇

@kisensee.bsky.social @carolineslomp.bsky.social @aoschlies.bsky.social

Call for Decade Actions No. 09/2025 - Ocean Decade Ocean Decade Ecosystem - Global Ocean Decade Coordination

The current call for #UNOceanDecade Projects ends on August 31!

The Decade provides an overarching framework to coordinate efforts on, among many other stressors, #ocean #deoxygenation, facilitating exchange and collaboration on science and action. #GO2NE

More here:
oceandecade.org/call-for-dec...

📣 Abstract submission is open for the Ocean Science Meeting!🌊We invite the #ocean #oxygen community to our PO2 session on #past, #present, & #future #deoxygenation. Join us at the conference. 👉 Scan the QR for details on our session and travel #funding options.@pages-ipo.bsky.social @agu.org #OSM26

Human-driven nutrient structure shifts as a new driver of coastal deoxygenation: Evidence from long-term observations in a bay with frequent human activities In many published studies, eutrophication of coastal bays often leads to the degradation of large amounts of organic matter, which consumes dissolved …

Human-driven nutrient structure shifts as a new driver of coastal #deoxygenation: Evidence from long-term observations in a bay with frequent human activities
www.sciencedirect.com/science/arti...

Register here👉 bit.ly/4l2ltWm for #GO2NE webinar 40 on 🌊 #ocean oxygen and #deoxygenation
17 July 1600 CEST

Speakers:
Andreas Oschlies @aoschlies.bsky.social
Ken Buesseler @cafethorium.bsky.social

Moderator: Marilaure Grégoire
Topics below! 👇

@kisensee.bsky.social @carolineslomp.bsky.social

Ocean science in action: How global cooperation helps to advance ocean science - Ocean Decade In this article, we showcase how UNESCO-IOC empowers countries to generate ocean knowledge.

👏 GOOD is featured during #OceanScience Day at the UNESCO-IOC Assembly

Highlighting efforts to advance observations, data accessibility, and capacity development on #ocean #deoxygenation

📽️ oceandecade.org/news/ocean-s...

@aoschlies.bsky.social @carolineslomp.bsky.social @kisensee.bsky.social

Potential impacts of marine carbon dioxide removal on ocean oxygen - IOPscience Potential impacts of marine carbon dioxide removal on ocean oxygen, Oschlies, Andreas, Slomp, Caroline P, Altieri, Andrew H, Gallo, Natalya D, Gregoire, Marilaure, Isensee, Kirsten, Levin, Lisa A, Wu, Jiajun

📢Potential impacts of marine carbon dioxide removal on #ocean oxygen.

Congratulations
@aoschlies.bsky.social, @carolineslomp.bsky.social, colleagues from the #GO2NE working group and beyond

iopscience.iop.org/article/10.1...

@kisensee.bsky.social
#deoxygenation #GO2NE

European Digital Ocean Pavilion The European Digital Ocean Pavilion at the 3rd UN Ocean Conference (UNOC 3) will offer a unique opportunity for visitors to explore EU's advancements in ocean knowledge and monitoring. Through a serie...

Today at 1730 CEST - extending the the Planetary Boundaries framework into the #ocean interior and all its domains, physics - biogeochemistry - biodiversity

Register at bit.ly/45qwCvn

@kisensee.bsky.social @apezner.bsky.social @aoschlies.bsky.social @carolineslomp.bsky.social #GO2NE #deoxygenation

Register here 👉 bit.ly/4kGxGjs for the next #GO2NE webinar on 🌊 #ocean #deoxygenation, 23 June, 10:00 CEST, in celebration of World Ocean Day

With speakers @apezner.bsky.social and
@carolineslomp.bsky.social
Topics below!

@aoschlies.bsky.social
@kisensee.bsky.social

Happy World Ocean Day from the UNESCO-IOC Global Ocean Oxygen Network working group #GO2NE at the onset of the UN Ocean Conference #UNOC3!

Stay tuned for outcomes of the annual GO2NE in-person meeting, finishing today.

#ocean #deoxygenation
@carolineslomp.bsky.social @aoschlies.bsky.social

Microbial Responses to Ocean Deoxygenation: Revisiting the impacts on Organic Carbon Cycling Ocean deoxygenation is and will also in the future impact funadamental biogeochemical cycles. This review explores the ecological functions of microbe…

Microbial Responses to Ocean #Deoxygenation: Revisiting the impacts on Organic Carbon Cycling
www.sciencedirect.com/science/arti...

📢Reminder ahead of 🌊#WorldOceanDay - let us know of any activities, on June 8 or in the surrounding weeks, that will highlight #ocean oxygen, #eutrophication, and/or #deoxygenation! We will amplify these efforts via our channels and include them in the upcoming issue of the #GO2NE newsletter.

Register here 👉 bit.ly/3ZgF7Fd for the next #GO2NE webinar on 🌊 #ocean #deoxygenation, 19 May, 19:00 CEST

Moderation from Andrea Fassbender
With speakers Mary Margaret Stoll and @sethbushinsky.bsky.social. Topics below!

@aoschlies.bsky.social
@carolineslomp.bsky.social
@kisensee.bsky.social

Could Bubbling Oxygen Revitalize Dying Coastal Seas? - Eos Reoxygenation approaches have shown some success in lakes, but their potential risks must be examined carefully before they’re implemented as solutions to improve the health of coastal waters.

📢Could Bubbling Oxygen Revitalize Dying Coastal Seas? The feature reports on ongoing work to consider best practices for marine reoxygenation techniques.

Congratulations @aoschlies.bsky.social, @carolineslomp.bsky.social

eos.org/features/cou...

@kisensee.bsky.social #ocean #deoxygenation #GO2NE

Underestimation of multi-decadal global O2 loss due to an optimal interpolation method Abstract. The global ocean's oxygen content has declined significantly over the past several decades and is expected to continue decreasing under global warming, with far-reaching impacts on marine ec...

bg.copernicus.org/articles/21/...

#BiodiversityLoss
#Extinction
#Deoxygenation

Globally limited but severe shallow-shelf euxinia during the end-Triassic extinction - Nature Geoscience While global ocean redox patterns during the end Triassic were similar to today, pulses of localized anoxia were probably linked to mass extinctions on continental shelves, according to analysis of mo...

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

#BiodiversityLoss
#Extinction
#Deoxygenation