Isaac Santos
@barefootlab.bsky.social
Professor of Marine Biogeochemistry, Editor in Chief Global Biogeochemical Cycles.
www.barefootbiogeochemistry.com
www.barefootbiogeochemistry.com
Reposted by Isaac Santos
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 A new study links outdated cesspools and septic systems in western Hawaii to water contamination, showing where cleanup should start.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.
Pinpointing Sewage Seeps in Hawaii - Eos
Cesspools and septic systems, as well as coastal development, put Hawaiian coastal waters at risk of contamination.
eos.org
October 12, 2025 at 2:40 PM
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 A new study links outdated cesspools and septic systems in western Hawaii to water contamination, showing where cleanup should start.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.
Reposted by Isaac Santos
🌊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
But more..
@globaloceanbgc.bsky.social floats. @mbarinews.bsky.social
October 4, 2025 at 12:45 AM
🌊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
But more..
@globaloceanbgc.bsky.social floats. @mbarinews.bsky.social
Reposted by Isaac Santos
📢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
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
September 11, 2025 at 5:02 PM
📢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
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
Reposted by Isaac Santos
Editorial published today by the Editors-in-Chief of the @agu.org journals:
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
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...
agupubs.onlinelibrary.wiley.com
August 20, 2025 at 1:25 PM
Editorial published today by the Editors-in-Chief of the @agu.org journals:
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Isaac Santos
"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
Read the full Editorial by the #AGUPubs Editors-in-Chief: doi.org/10.1029/2025...
#GoldStandardScience
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...
doi.org
August 20, 2025 at 3:01 PM
"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
Read the full Editorial by the #AGUPubs Editors-in-Chief: doi.org/10.1029/2025...
#GoldStandardScience
Reposted by Isaac Santos
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
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
July 9, 2025 at 12:53 PM
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
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
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!
Even when the political winds shift, science must keep moving forward.
That’s why @AGU and @ametsoc are stepping up with a first-of-its-kind special collection on climate change in the U.S.—across 29+ peer-reviewed journals. 🌍📚
Read all about it: buff.ly/6G05hQD
That’s why @AGU and @ametsoc are stepping up with a first-of-its-kind special collection on climate change in the U.S.—across 29+ peer-reviewed journals. 🌍📚
Read all about it: buff.ly/6G05hQD
May 3, 2025 at 8:10 AM
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!
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...
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...
2025 Birdsall-Dreiss Distinguished Lecturer - Hydrogeology Division
community.geosociety.org
April 30, 2025 at 10:08 AM
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...
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...
Lots of cool barefoot lab presentations @EGU25 next week! Pop in and say hello!
April 25, 2025 at 9:43 AM
Lots of cool barefoot lab presentations @EGU25 next week! Pop in and say hello!
Reposted by Isaac Santos
🧪 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
🌎 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
April 7, 2025 at 9:11 AM
🧪 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
🌎 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
Reposted by Isaac Santos
#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
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
April 4, 2025 at 7:03 AM
#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
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
Congrats @acabral.bsky.social on another awesome mangrove paper!
🌿 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
🌎 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
April 3, 2025 at 1:38 PM
Congrats @acabral.bsky.social on another awesome mangrove paper!
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...
Total SGD accounted for 19–54% of nutrient inputs, exceeding inputs from atmospheric deposition and rivers.
www.nature.com/articles/s41...
March 28, 2025 at 11:27 AM
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...
Total SGD accounted for 19–54% of nutrient inputs, exceeding inputs from atmospheric deposition and rivers.
www.nature.com/articles/s41...
Reposted by Isaac Santos
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
doi.org/10.1029/2024GB008409
March 24, 2025 at 10:08 PM
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
doi.org/10.1029/2024GB008409
Reposted by Isaac Santos
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...
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...
www.nature.com
March 17, 2025 at 8:39 PM
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...
Reposted by Isaac Santos
🚨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
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
tinyurl.com
March 15, 2025 at 3:22 PM
🚨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
Reposted by Isaac Santos
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....
agupubs.onlinelibrary.wiley.com/doi/full/10....
February 11, 2025 at 1:05 AM
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....
agupubs.onlinelibrary.wiley.com/doi/full/10....
Reposted by Isaac Santos
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 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
February 18, 2025 at 9:06 AM
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 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....
Reposted by Isaac Santos
AGU stands with federal scientists. Read more on fromtheprow.agu.org/standing-tog...
February 14, 2025 at 6:01 PM
AGU stands with federal scientists. Read more on fromtheprow.agu.org/standing-tog...
Reposted by Isaac Santos
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
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
February 13, 2025 at 11:22 AM
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
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
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...
January 23, 2025 at 5:05 PM
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...
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....
Groundwater discharge explained much of the CO2 tidal dynamics in nearshore waters.
www.science.org/doi/full/10....
Groundwater releases CO2 to diverse global coastal ecosystems
Groundwater is a hidden, steady source of CO2 to coastal waters.
www.science.org
January 15, 2025 at 9:58 PM
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....
Groundwater discharge explained much of the CO2 tidal dynamics in nearshore waters.
www.science.org/doi/full/10....
Reposted by Isaac Santos
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....
Groundwater discharge contributes large amounts of carbon dioxide to coastal ecosystems and warrants inclusion in their carbon budgets.
www.science.org/doi/full/10....
Groundwater releases CO2 to diverse global coastal ecosystems
Groundwater is a hidden, steady source of CO2 to coastal waters.
www.science.org
January 14, 2025 at 4:24 AM
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....
Groundwater discharge contributes large amounts of carbon dioxide to coastal ecosystems and warrants inclusion in their carbon budgets.
www.science.org/doi/full/10....
Reposted by Isaac Santos
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...
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...
December 12, 2024 at 5:47 AM
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...
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...
