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Isaac Santos

@barefootlab.bsky.social
600 followers 258 following 18 posts

Professor of Marine Biogeochemistry, Editor in Chief Global Biogeochemical Cycles. www.barefootbiogeochemistry.com

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Reposted by Isaac Santos
AGU (American Geophysical Union) @agu.org · 27/08/2026
In a new commentary, the AGU Publications Editors-in-Chief discuss the importance of choosing where to publish and the values embedded throughout AGU's publications. 🔗 Check it out: spklr.io/63322ErMKQ #AGUPubs #Publishing #STEM #Academia #OpenAccess
Publishing With Purpose: What AGU Journals Stand For
A new commentary by the AGU Publications Editors in Chief
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Reposted by Isaac Santos
Kris Karnauskas @oceansclimatecu.bsky.social · 19/08/2026
📣 Published today in GRL Editorial by all @agu.org Editors-in-Chief (and led by @barefootlab.bsky.social) on why we choose to publish in society journals (like AGU's) agupubs.onlinelibrary.wiley.com/doi/10.1029/...
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Eos @eos.org · 12/10/2025
Sewage in the ground, waste in the sea. A new study links outdated cesspools and septic systems in western Hawaii to water contamination, showing where cleanup should start. A model for islands worldwide.
eos.org
Pinpointing Sewage Seeps in Hawaii - Eos
Cesspools and septic systems, as well as coastal development, put Hawaiian coastal waters at risk of contamination.
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Reposted by Isaac Santos
Ken Johnson @montereyken.bsky.social · 04/10/2025
🌊BGC-Argo float of the month is a sensor, not a float. Bif and Johnson (GBC; doi/10.1029/2024GB008473) show that the concentration of nitrite can be extracted from the UV spectra of ISUS or SUNA nitrate sensors. But more.. @globaloceanbgc.bsky.social floats. @mbarinews.bsky.social
Time series of a BGC‐Argo float WMO#5906483 deployed in the ETNP in January 2022 (see inset map reference). (a) Mean monthly POC stocks at the upper 100 m depth. (b) Chlorophyll fluorescence concentrations at the upper 200 m depth. Dashed black lines denote the ML. (c) POC concentrations overlain by the ML. (d) Nitrate concentrations. (e) Nitrite concentrations. (f) Thiosulfate concentrations. (g) Oxygen concentrations minus a background correction from the sensor
calibration offset. Continuous black lines denote the isolines where corrected O2 = 1 μmol kg^-1
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Reposted by Isaac Santos
AGU (American Geophysical Union) @agu.org · 11/09/2025
📢Call for Papers!📢 A new #AGUPubs special collection welcomes articles that advance our understanding of human-perturbed nutrient and carbon cycles along the land-to-ocean continuum. 🔗 Learn how to submit: buff.ly/ilFnZVG #AGUPubs #Biogeochemistry #Geochemistry #Nutrients #SDGs #IMOG2025
Special Collection Call for Papers!
Changing biogeochemical cycles along the land-to-ocean aquatic continuum.
Open for submissions in: 
Earth's Future
Geophysical Research Letters
Global Biogeochemical Cycles
JAMES
JGR: Biogeosciences
JGR: Oceans
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Reposted by Isaac Santos
Kris Karnauskas @oceansclimatecu.bsky.social · 20/08/2025
Editorial published today by the Editors-in-Chief of the @agu.org journals: agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
The Executive Order “Restoring Gold Standard Science” is Dangerous for America
This EO is an unconstitutional attempt to censor and punish U.S. scientists for publishing science that doesn't fit a political agenda This misleading and false misrepresentation of U.S. scientif...
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Reposted by Isaac Santos
AGU Advances @aguadvances.bsky.social · 20/08/2025
"American science has no need to be "Restored" to a "Gold Standard:" American science has already set the "Gold Standard" for scientific research and publishing for over 80 years." Read the full Editorial by the #AGUPubs Editors-in-Chief: doi.org/10.1029/2025... #GoldStandardScience
doi.org
The Executive Order “Restoring Gold Standard Science” is Dangerous for America
This EO is an unconstitutional attempt to censor and punish U.S. scientists for publishing science that doesn't fit a political agenda This misleading and false misrepresentation of U.S. scientif...
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Reposted by Isaac Santos
Tristan McKenzie @h2osci.bsky.social · 09/07/2025
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
doi.org
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...
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Isaac Santos @barefootlab.bsky.social · 03/05/2025
GBC and other @agu.org journals will do what is possible to pick up the slack! Submit your best climate change science to society journals!
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Isaac Santos @barefootlab.bsky.social · 30/04/2025
Online seminar by Bayani Cardenas today 15.30 Sweden time: Land-ocean connectivity in Arctic lagoons due to groundwater All welcome on zoom: gu-se.zoom.us/j/6239355490... The talk is part of his world tour sponsored by the GSA Hydrogeology Division: community.geosociety.org/hydrodivisio...
community.geosociety.org
2025 Birdsall-Dreiss Distinguished Lecturer - Hydrogeology Division
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Isaac Santos @barefootlab.bsky.social · 25/04/2025
Lots of cool barefoot lab presentations @EGU25 next week! Pop in and say hello!
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Henry LS Cheung @hlscheung.bsky.social · 07/04/2025
🧪 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
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Stefano Bonaglia @biogeoste.bsky.social · 04/04/2025
#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
agupubs.onlinelibrary.wiley.com
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...
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Isaac Santos @barefootlab.bsky.social · 03/04/2025
Congrats @acabral.bsky.social on another awesome mangrove paper!
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Isaac Santos @barefootlab.bsky.social · 28/03/2025
Large scale submarine groundwater discharge dominates nutrient inputs to China’s coast. Total SGD accounted for 19–54% of nutrient inputs, exceeding inputs from atmospheric deposition and rivers. www.nature.com/articles/s41...
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Nadine Lehmann @nadlehmann.bsky.social · 24/03/2025
New paper just published! We combined a water mass decomposition with biogeochemical tracers to untangle advective nutrient sources from the Gulf Stream and the Labrador Current versus local recycling along the Northwest Atlantic continental shelf. Have a look: 👇🌊🧪 #AGU doi.org/10.1029/2024GB008409
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Communications Biology @commsbio.nature.com · 17/03/2025
50 priority questions to guide research of global #meiofauna: standardized sampling and improved taxonomic methods are urgently needed to enhance #biodiversity assessments. Genomic approaches and international collaborations should be leveraged to overcome data bias. www.nature.com/articles/s42...
nature.com
Fundamental questions in meiofauna research highlight how small but ubiquitous animals can improve our understanding of Nature - Communications Biology
This paper identifies the top-50 priority questions for meiofaunal research, highlighting their critical roles in biogeochemical cycles and biodiversity. It calls for a balanced research agenda, inter...
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Robert G. Björk @robertgbjork.bsky.social · 15/03/2025
🚨We are hiring🚨ECR with a PhD within 7 years? Tenure track position (akin to Assistant Prof) in Earth and Env Data Science at U of Gothenburg, Sweden. Expertise in remote sensing and machine learning. Work on climate change, Earth systems, biodiversity, #EO, #UAV Deadline May 10 tinyurl.com/58ft38du
tinyurl.com
Associate Senior Lecturer in Earth and Environmental Data Science
Associate Senior Lecturer in Earth and Environmental Data Science At the Department of Earth Sciences, we
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Mark Hopwood @markinchina.bsky.social · 11/02/2025
A nice letter by Yau et al., looking at CO2, CH4 and N2O fluxes across the glacier-ocean continuum in Iceland 🌊 agupubs.onlinelibrary.wiley.com/doi/full/10....
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Reposted by Isaac Santos
Yvonne YY Yau @yvonneyau.bsky.social · 18/02/2025
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....
agupubs.onlinelibrary.wiley.com
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
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AGU (American Geophysical Union) @agu.org · 14/02/2025
AGU stands with federal scientists. Read more on fromtheprow.agu.org/standing-tog...
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Stefano Bonaglia @biogeoste.bsky.social · 13/02/2025
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
@barefootlab.bsky.social 
@agu.org
@naturvetenskap.bsky.social
@awahlin.bsky.social
@hlscheung.bsky.social
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Isaac Santos @barefootlab.bsky.social · 23/01/2025
Want to join @agu.org Global Biogeochemical Cycles editorial board? We are recruiting associate editors with expertise in microbiology (terrestrial and marine), silica and phosphorus cycling, soil respiration, lake CNP cycling, forest productivity, aquatic organic matter...
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Isaac Santos @barefootlab.bsky.social · 15/01/2025
Awesome outcome of Apra Tomer’s MSc work summarising >10 years of field investigations at 40 coastal systems from 14 countries. Groundwater discharge explained much of the CO2 tidal dynamics in nearshore waters. www.science.org/doi/full/10....
science.org
Groundwater releases CO2 to diverse global coastal ecosystems
Groundwater is a hidden, steady source of CO2 to coastal waters.
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Reposted by Isaac Santos
Jackie Webb @jackiewebb.bsky.social · 14/01/2025
Proud to be a part of the authorship team on this one! Groundwater discharge contributes large amounts of carbon dioxide to coastal ecosystems and warrants inclusion in their carbon budgets. www.science.org/doi/full/10....
science.org
Groundwater releases CO2 to diverse global coastal ecosystems
Groundwater is a hidden, steady source of CO2 to coastal waters.
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Reposted by Isaac Santos
Kasper Elgetti Brodersen @kebrodersen.bsky.social · 12/12/2024
Only 3 more weeks to apply for the open postdoc position in my lab! Project work focuses on greenhouse gas dynamics in seagrass meadows. Read more about our research here: elgetti.wordpress.com Link to apply and read about the project: candidate.hr-manager.net/ApplicationI...
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Isaac Santos @barefootlab.bsky.social · 11/12/2024
@ AGU 24
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Isaac Santos @barefootlab.bsky.social · 28/11/2024
We are hosting two cool seminars today 3.15 pm Sweden time Zoom: gu-se.zoom.us/j/65702490997 Eero Asmala, GTK Finland Carbon burial in boreal lakes: linking sediment records to nutrient enrichment Claire Treat, Aarhus University Regional methane emissions from small to very large All welcome!
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Isaac Santos @barefootlab.bsky.social · 26/11/2024
All welcome to Yvonne Yau PhD defense ”Methane offsets to carbon sequestration in coastal ecosystems” Friday 29 Nov 1 pm Sweden time. Details and zoom link below. www.gu.se/en/event/yu-...
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Isaac Santos @barefootlab.bsky.social · 25/11/2024
Linnea Henriksson’s first paper just out in JGR-B. Drivers of Seasonal and Diel #Methane Emissions From a #Seagrass Ecosystem CO2-equivalent CH4 emissions counteracted 6% of the CO2 uptake, and ~1% of sediment carbon sequestration agupubs.onlinelibrary.wiley.com/doi/full/10....
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Jay T. Cullen @jaytcullen.bsky.social · 22/11/2024
1/n The Gordon Research Conference and Symposium in Chemical Oceanography will be held this coming Jul 27-Aug 1, 2025. Chair Phoebe Lam & GRS co-Chairs Jule Middleton & Gabbie Akpah Yeboah have put together a great program around the theme "Fingerprints in the Ocean" www.grc.org/chemical-oce... 🌊
grc.org
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Isaac Santos @barefootlab.bsky.social · 24/11/2024
Thinking about publishing your work with AGU? Let’s connect at #AGU24! Sign up for a 15-minute, in-person 1-on-1 meeting with me to explore publishing options with AGU journals. Editor Rapid Review sessions at the Open Science Pavilion. 🔗  lite.spr.ly/6007DXph  #AGUPubs
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Isaac Santos @barefootlab.bsky.social · 14/11/2024
Yvonne Yau nails her PhD thesis on methane emissions from coastal ecosystems starting the Swedish ritual for graduation.
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