Come work with us at @tcddublin.bsky.social We are hiring a tenure-track Assistant Professor in Earth System Modelling using geochemical datasets to explore Earth system processes and biogeochemical cycles. Deadline: 10 April 2026 jobs.tcd.ie

Interested in marine biogeochemistry and blue carbon? We’re opening a PhD position: web103.reachmee.com/ext/I005/103...

New Job Opportunity! 🌊 Assistant Professor, Ocean Biogeochemical Modeling, University of Hawai'i at Manoa, USA www.geotraces.org/assistant-pr... #sciencejobs

Earth’s silicate weathering continuum www.nature.com/articles/s41... #jcampubs 🌊

Earth’s silicate weathering continuum - Nature Geoscience

Chemical weathering of silicate rocks occurs along a continuum from terrestrial to marine environments.

nature.com

Upcoming workshop (September) - Marine Benthic Calcifiers and Their Contribution to the Oceanic Carbon Cycle Stay tuned — full program & registration coming early September! maf-world.eu/events/save-...

🇨🇭The #ETH in #Zürich is looking for an Assistant Professor in #Soil (Bio-/Geo-) Chemistry! Deadline to apply is September 30th! Please Share! #AcademicSky #Biochemistry #biogeochemistry #soilscience ethz.ch/en/the-eth-z...

Assistant Professor (Tenure Track) of Soil Chemistry

ethz.ch

Pleased to share our new publication in @aslo.org L&O! We used #radium-224 to quantify vertical mixing and benthic silicate fluxes across the #Baltic Sea. Read more here (fully open access): doi.org/10.1002/lno.... With (and others): @barefootlab.bsky.social @biogeoste.bsky.social

Radium isotopes quantify vertical mixing and reveal large benthic silicate fluxes in anoxic deep waters

Benthic fluxes are important sources of nutrients and dissolved carbon to the water column. Yet, most approaches for quantifying benthic fluxes are labor intensive and cover relatively small areas of...

doi.org

⚒️ Article: The proportion of carbon, nitrogen, and phosphorus in the ocean now substantially differs from the Redfield ratio, likely reflecting a reduction in phosphorus limitation www.nature.com/articles/s41...

We are hiring! The School of Natural Sciences in Trinity College Dublin is seeking to appoint a tenure-track Assistant Professor in Environmental Science. Apply here: my.corehr.com/pls/trrecrui..., and under 'Department', scroll to The School of Natural Sciences. Deadline: August 15th.

🚨 PhD in marine biogeochemistry at ICBM (@icbm-uol.bsky.social) and MARUM (@marumunibremen.bsky.social) 🌊 Study DOM–metal interactions, and go on research cruises! Project: www.marum.de/en/The-Ocean... Apply: www.uni-bremen.de/universitaet... #phd #DOM #deepsea

PhD scholarship available in modelling water quality NbS measures. info here earthandplanetary.wordpress.com/2025/06/19/p...

🚨 Happy to have contributed to the report: " The State of the World's Salt marshes" www.wwf.org.uk/our-reports/... 👉 Salt marshes have been lost to a crazy extend and this continue (0.28% per year). 👉~ 2 millions hectares could be restored

Wrapping up your PhD? I’m planning to hire a postdoc in the next few months (start date flexible). Will start formally advertising soon, but you heard it here first!! Possible research topics include - critical zone hydrology, agricultural water quality, SW-GW interactions. Reach out if interested!

🌊 Registration now open for the GEOTRACES summer school. 📅 17-21 November | Cape Town 🎓Training in marine biogeochemistry of trace elements and isotopes for 36 students Applications close 30 June 2025 geotraces-2025.sciencesconf.org

Delighted to share our paper on developing a catchment-level indicator for subsurface nutrient export risk. It focuses on how nutrients from areas not well connected via surface waters (eg, rivers) can reach the sea through subsurface pathways, framed in the context of the #BalticSea

Land Meets Sea: Towards the Development and Application of an Indicator to Assess Subsurface Nutrient Export Risk from Disconnected Coastal Catchments to the Sea - Estuaries and Coasts

The land along the coast is often hydrologically disconnected from the prevailing river systems. Water flow and nutrient transport from these disconnected coastal subcatchments follow diffusive pathwa...

link.springer.com

New paper! led by Josh Dean “Old carbon routed from land to the atmosphere by global river systems” doi.org/10.1038/s415... #radiocarbon in #rivers reveals the age of CO2 they release to the atmosphere. An active leak of old carbon from land. 🧪⚒️ @joshfdean.bsky.social @oxuniearthsci.bsky.social

No advert out yet, but I will recruiting a 2yr postdoc, start date autumn 2025, at @livunigeog.bsky.social soon. Lowland and upland peatlands, GHGs, DOM and water chemistry. Plenty of fieldwork. Feel free to drop me a DM or email if you might be interested, and please spread the word.

Paper out! 📣📣 Environmental Gradients, Not Geographic Boundaries, Structure Meiofaunal Communities in Siberian Seas 🌊🪱🪱 #Arctic #Biogeochemistry #Meiofauna #Sediment 📰 Full text: onlinelibrary.wiley.com/doi/10.1002/... 🤝@naturvetenskap.bsky.social @balticseacentre.bsky.social and others...

Environmental Gradients, Not Geographic Boundaries, Structure Meiofaunal Communities in Siberian Seas

This study uses sediment eDNA metabarcoding to assess the diversity and distribution of meiofauna in Siberian seas, marking the first application of this technique in the region. Our results reveal t....

onlinelibrary.wiley.com

One week to get your applications in for our Blue Carbon Canada positions! Come join a collegial productive team with @taragmartin.bsky.social Sara Knox, Mary O’Connor, Graham Clark, me and our stellar set of PDFs and grad students! 🇨🇦 🌊 #dreamteam

Dr. Julia K. Baum@baumlab.bsky.social · last yr.

We're Hiring for 8 Positions!! Interested in conducting research on nature based solutions in Canada's coastal ecosystems? Blue Carbon Canada is recruiting 3 PDFs & 5 PhD students for Sept. 2025 in partnership w @wwfcanada.org www.bluecarboncanada.ca/were-recruit... Open to int'l scholars Pls repost

🌊 Do you work with fjord sediments? Then join us at #22ISC for the session: “Fjord sediments: Archives of climate and tectonics through time” 📍 Wellington, Aotearoa New Zealand 📅 25–30 January 2026 🌐 Session: tinyurl.com/fjordISC2026 @coastalcarbon.bsky.social @sedimentology.bsky.social

Adding alkalinity to the ocean might enable it to take up more atmospheric CO₂, but much more research in laboratories, mesocosms, and field studies is needed before considering full-scale deployment. I have some thoughts in this piece. 🌊

Oceans as climate change allies

Can climate catastrophe be stymied by tweaking seawater chemistry?

cen.acs.org

@standrewssgsd.bsky.social has a new two week Blue Carbon Summer School happening between the 29th June and the 12th of July. Over the two weeks you will be introduced to field, lab and digital skills to undertake blue carbon research. Full details - tinyurl.com/yeyrbbm5

🧪 Nutrient pollution in Europe’s lagoons has triggered great nitrous oxide (N2O) emissions 🫧 🌎 Globally, emission from lagoons is higher than previously estimated 📈 Check is out in @jgrbiogeo.bsky.social 🔗: doi.org/10.1029/2024... 🤝 @biogeoste.bsky.social @barefootlab.bsky.social

A mangrove nitrous oxide sink attenuates methane climate impacts aslopubs.onlinelibrary.wiley.com/doi/10.1002/... #jcampubs

#Nitrogen paper out! 🌊🌊🌊 Global lagoons emit more N2O than we thought! agupubs.onlinelibrary.wiley.com/doi/full/10.... The 2nd PhD paper by @hlscheung.bsky.social with a great team @barefootlab.bsky.social, etc. is out now in @jgrbiogeo.bsky.social @agu.org

Nitrate‐Driven Eutrophication Supports High Nitrous Oxide Production and Emission in Coastal Lagoons

Eutrophication stimulates nitrous oxide emissions in coastal lagoons Excess nitrate induces incomplete denitrification, leading to high nitrous oxide effluxes in sediments Nitrous oxide emission...

agupubs.onlinelibrary.wiley.com

🌿 Pristine mangroves absorb nitrous oxide (N2O), offsetting up to 71% of methane (CH4) emissions. 🌎 Global N2O uptake may compensate one-third of aquatic CH4 emissions. aslopubs.onlinelibrary.wiley.com/doi/full/10.... @aslo.org @barefootlab.bsky.social @biogeoste.bsky.social #ASLO_Letters

We are hiring a postdoc at Umeå University in aquatic ecosystem ecology. See the link for details! www.umu.se/en/work-with... @grocherros.bsky.social

Postdoc (2 years) in aquatic ecosystem ecology

umu.se

My last PhD chapter is out! Combined GHG fluxes reveal a net carbon sink across a glacier-ocean continuum — glacier exports CH₄ to coastal waters, but strong CO₂ uptake outweighs GHG emissions. 🌊❄️ Read more: agupubs.onlinelibrary.wiley.com/doi/full/10....

Combined CH4, N2O, and CO2 Fluxes Reveal a Net Carbon Sink Across a Glacier‐Ocean Continuum

A rapidly-retreating marine-terminating glacier exported CH4 to nearshore waters N2O was undersaturated near the glacier front The regional CO2 sink greatly outweighs CH4 and N2O emissions

agupubs.onlinelibrary.wiley.com

Paper out @agu.org! Overall, global fjords are minor sources of #N2O to the atmosphere ❗ BUT fjords with #aquaculture and #anoxia host relatively high nitrous oxide #emissions 👉 doi.org/10.1029/2024... 🤝Great collaboration with @barefootlab.bsky.social @awahlin.bsky.social

🌿Mangrove outwelling is a major carbon sequestration pathway, driving bicarbonate storage in the ocean. 🌊 Using radium isotopes, we resolved carbon outwelling from mangrove porewater to the continental shelf across seascapes in Brazil. 🌎 Open access: doi.org/10.1029/2024... #AGUPubs @JGROceans