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Gerard Rocher-Ros

@grocherros.bsky.social
1.3K followers 863 following 55 posts

Ecosystem ecology, biogeochemistry, Limnology. Trying to combine fieldwork and modelling. In January, Assistant Professor in Ecosystem Ecology at IceLab in Umeå University (Sweden).

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Gerard Rocher-Ros @grocherros.bsky.social · 09/03/2026
Ryan (and me) are hiring a PhD student! Sweden is a great country to do a PhD, see the link or ask us for more details, or share with potential students!
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Critical Zone News @cznews.bsky.social · 14/02/2026
Our latest post to Substack. 🌐🧪
bit.ly
Water Tables Rewire Wetland Methane Fate
At the edge of a wetland, the world is built in layers.
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IceLab @icelabumu.bsky.social · 12/02/2026
New @science.org paper shows early-2020s methane spike driven mostly by a temporary slowdown in the atmosphere’s methane removal and climate-boosted natural emissions. IceLab’s @grocherros.bsky.social helped quantify methane from running waters, improving understanding of the global methane budget.
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Diego Riveros-Iregui @carbonshed.bsky.social · 19/10/2025
Grateful to be part of this synthesis, led by Clément Duvert and Nick Marzolf. Nice to see this paper is finally out. www.nature.com/articles/s44...
nature.com
Hydroclimate and landscape diversity drive highly variable greenhouse gas emissions from tropical and subtropical inland waters - Nature Water
This meta-analysis assesses the rates and drivers of greenhouse gas emissions from flowing and standing (sub)tropical inland waters, finding that emissions are lower than previous estimates. Considera...
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Gerard Rocher-Ros @grocherros.bsky.social · 05/09/2025
My latest paper is now out in Limnology and Ocenography Letters @aslo.org, titled "Emerging patterns of CO2 : O2 dynamics in rivers and their link to ecosystem carbon processing". It is open access, so go read! I am mostly proud of this figure, which I spent a lot of hours figuring out how to do it
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JP Gannon @jpgannon.bsky.social · 23/06/2025
Teach hydro modeling? Want to introduce modeling in an intro class? Check out this web-app, activities, and code (in case you want to spin off your own).. Thanks @jansei.bsky.social for working with me on this, which was inspired by his HBV-lite teaching software! dx.doi.org/10.1002/hyp....
dx.doi.org
Interactive Learning in Hydrological Modelling With a Web‐Based Tool
We introduce a web-based tool to explore hydrological modeling in classrooms. The app can be run in any internet browser on a variety of devices. The app and code are available for free. We include m...
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Gerard Rocher-Ros @grocherros.bsky.social · 13/06/2025
"Riparian Zone Heterogeneity Influences the Amount and Fate of Biodegradable Dissolved Organic Carbon at the Land-Water Interface", by Melissa Reidy and others, in @jgrbiogeo.bsky.social agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
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IceLab @icelabumu.bsky.social · 27/05/2025
IceLab Camp: FREE #TRAINING for #PhD students and #Postdocs eager to explore science across boundaries! Learn how to ask questions, craft interdisciplinary research proposals & have fun doing it. September 23–26 near Umeå Apply by June 9 www.umu.se/en/icelab/ca... #complexsystems #complexityschool
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Carl T. Bergstrom @carlbergstrom.com · 10/05/2025
1. After getting some further insight into changes at NSF (thanks to those who reached out), I deleted a previous post where I tried to make sense of Cheatham's memo as reported in the Science story below.
science.org
NSF slashes number of ‘rotators’ and well-paid managers as part of restructuring
Smaller future budgets will require fewer people, NSF official tells staff
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Gerard Rocher-Ros @grocherros.bsky.social · 22/04/2025
Kriddie, after defending over a week ago, has a new paper out in WRR: "Carbon Emissions From Low-Order Streams in a Tropical, High-Elevation, Peatland Ecosystem Are Mediated by Catchment Morphology". Check it out! agupubs.onlinelibrary.wiley.com/doi/full/10....
agupubs.onlinelibrary.wiley.com
Carbon Emissions From Low‐Order Streams in a Tropical, High‐Elevation, Peatland Ecosystem Are Mediated by Catchment Morphology
Patterns of pCO2 and CO2 emissions in tropical, páramo streams are consistent and predictable Dense drainage networks compensate for narrow widths of small streams resulting in similar CO2 emissi...
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Gerard Rocher-Ros @grocherros.bsky.social · 17/04/2025
Today was the first field day in my ERC ARIMETH project! I installed a oxygen and water level sensor in Krycklan. It was a great field day, wearing t-shirt, sunny... But this is so wrong. Mid-april in northern Sweden means a thick snow cover, but this has been an abnormally warm and dry winter.
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Gerard Rocher-Ros @grocherros.bsky.social · 15/04/2025
I had the pleasure to follow along Kriddie's PhD from the distance, and her work on carbon cycling in high altitude tropical streams. Now she's Dr. Kriddie!
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Enrico Bertuzzo @enricobertuzzo.bsky.social · 11/04/2025
Looking the get the most out of your stream CO2 data? Check out the coupled O2-CO2 model developed by Jake Diamond and me, out today in JGRB! The model extends the single-station O2 model by coupling DIC mass balance and carbonate buffering. agupubs.onlinelibrary.wiley.com/doi/10.1029/...
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Li Li (李黎) @lireactivewater.bsky.social · 31/03/2025
eartharxiv.org/repository/v... Can we develop a global #deeplearning #model for daily Soil CO2 efflux? Results show - #LSTM models can use existing data to generate synthetic data for temperate mesic regions - challenges of transferring relationships learned from data-rich to data-poor sites
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Gerard Rocher-Ros @grocherros.bsky.social · 29/03/2025
First experience with fractal objects
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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 26/03/2025
Hydrology Paper of the Day @smanderson.bsky.social on climate change in coastal wetlands: how tree species are affected by salinity pulses due to saltwater intrusion; species-specific responses and impacts; leaf spectral reflectance changes related to NDVI and PRI; and greenhouse experiments.
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Jarrett Byrnes @jebyrnes.bsky.social · 20/03/2025
OK, #causalinference #ecology folk - my paper with the even excellent @lauradee.bsky.social on causal inference with observational data is now out in Ecology Letters! 🌍🧪🌊 onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com
Causal Inference With Observational Data and Unobserved Confounding Variables
As ecology tackles progressively larger problems, we are moving beyond the scales at which randomised controlled experiments are feasible. Using observational data for causal inference raises the pro...
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Tamlin Pavelsky @globalhydro.bsky.social · 19/03/2025
Do you work on lakes globally? Check out what is, to my mind, the most complete global database of lakes (~6M) and associated attributes, newly published in WRR. Also the basis for SWOT lake data. agupubs.onlinelibrary.wiley.com/doi/full/10....
Map of global lake distribution, colored by the number of SWOT overpasses per 21 day cycle. There are many lakes with a high number of SWOT overpasses at high northern latitudes, but there are also tens of thousands to more than a million lakes on every continent. Lakes are graphed by latitude and longitude on the edges of the figure.
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Natalia (娜塔莉) @wrycritic.bsky.social · 08/03/2025
Happy International Women's Day! Despite the efforts, while much more women enter scientific fields, due to numerous factors, few manage to remain in the field or secure senior positions. Support your coworkers, call out harmful systemic behaviour. 😘
"Scissor Graph" showing men overtaking women in proportional representation in sciences after doctorate
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Ryan Sponseller @ryansponseller.bsky.social · 05/03/2025
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
umu.se
Postdoc (2 years) in aquatic ecosystem ecology
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AU Freshwater Ecology @freshwaterau.bsky.social · 03/03/2025
Your model is your hypothesis. So, why not use multiple of them? Championed by Feldbauer & Mesman, in our fresh-off-the-press paper we highlight the performance of temperature models across the globe, and discuss the path forward to get better projections! hess.copernicus.org/articles/29/...
hess.copernicus.org
Learning from a large-scale calibration effort of multiple lake temperature models
Abstract. Process-based lake temperature models, formulated on hydrodynamic principles, are commonly used to simulate water temperature, enabling one to test different scenarios and draw conclusions a...
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David Ho @davidho.bsky.social · 27/02/2025
One of the people fired from NOAA today is the director of the Ocean Acidification Program. That program also leads the U.S. government's effort on marine carbon dioxide removal (mCDR). The destruction of American science is incomprehensible.
oceanacidification.noaa.gov
Home - NOAA Ocean Acidification Program
NOAA's Ocean Acidification Program prepares us for the impacts of ocean acidification through research and interdisciplinary partnerships.
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Gerard Rocher-Ros @grocherros.bsky.social · 24/02/2025
Interesting article by Yi and others: "Principles for guiding future research on resilience and tipping points" iopscience.iop.org/article/10.1...
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Katharine Hayhoe @katharinehayhoe.com · 21/02/2025
‼️The US-based @ipcc.bsky.social technical support unit (TSU) for Working Group 3 Co-Chairs has been terminated, and the US won’t be attending next week’s IPCC meeting where the AR7 chapter outlines will be approved. More by @afreedma.bsky.social here:
axios.com
Scoop: U.S. delegation pulled from key U.N. climate science meeting
The IPCC meeting in China is slated to determine the content in the group's next series of reports.
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IceLab @icelabumu.bsky.social · 14/02/2025
#PhDposition #Extension news - you now have until March 3rd to apply to the Stress Response Modeling research school's five PhD positions! #phdsky www.umu.se/en/icelab/ca...
umu.se
Stress Response Modeling PhD Positions
The Integrated Science Lab (IceLab) jointly with several departments at Umeå University offer multiple PhD positions that will be connected to different multidisciplinary projects. The ideal candidat...
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Gerard Rocher-Ros @grocherros.bsky.social · 12/02/2025
I'm starting to build DIY CO2+CH4 measurement devices and I came across this kind of neat air-water equilibrator, EQSphere. Anyone heard of this before and has experience with it? eqsphere.com
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Gabrielle Beans @gabbybeans.bsky.social · 10/02/2025
A friend of mine has a personal contact with Alabama representatives and will send a personal message regarding #NIH #indirect funding cuts. She is looking for personal stories of the effects of science funding cuts on individual people, particularly if they are in Alabama! Share, I'll pass them.
media.tenor.com
an older man with a beard and mustache says tell me everything
ALT: an older man with a beard and mustache says tell me everything
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Gerard Rocher-Ros @grocherros.bsky.social · 07/02/2025
Position still open for applications. If computational skills are low but creativity is high, you're still encouraged to apply!
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Nature Portfolio @natureportfolio.nature.com · 05/02/2025
Analysis of the confined crowds at the San Fermín festival in Spain shows that dense crowds can self-organize into macroscopic chiral oscillators, coordinating the orbital motion of hundreds of individuals without external guidance, according to a paper in Nature. go.nature.com/3WKkb8r 🧪
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IceLab @icelabumu.bsky.social · 06/02/2025
Do you have computational modeling skills and an interest in understanding how plants respond to stress? There is a #FundedPhD for you at IceLab in Umeå University! Work with @mrosvall.bsky.social, Åsa Strand and Ludvig Lizana. Apply by Feb 16 www.umu.se/en/work-with... #plantsci #complex #phdsky
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IceLab @icelabumu.bsky.social · 06/02/2025
Do you have #computational modeling skills and an interest in #immune system dynamics? There is a #FundedPhD for you at IceLab in Umeå University! Work with @mrosvall.bsky.social, Johan Normark & Mattias Forsell. Apply by Feb 16 www.umu.se/en/work-with... #ML #complex #phdsky #mathmodeling #stress
A poster advertising a PhD position with a QR code at the top middle.
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IceLab @icelabumu.bsky.social · 06/02/2025
Have #computational modeling skills & interest in ecological communities' response to #climate stress? There's a #FundedPhD for you at IceLab with @elibbyscience.bsky.social @mrosvall.bsky.social & Rubén Bernardo Madrid. Apply by Feb 16 www.umu.se/en/work-with... #netsci #complex #phdsky #ecoevo
Poster for a funded PhD position with a QR code in the center top leading to the application website.
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Wojciech Uszko @wojciechuszko.bsky.social · 03/02/2025
A postdoc opening at Umeå University! The assessment of long-term Fennoscandian monitoring data to predict future trajectories of northern lake productivity umustipendie.varbi.com/en/what:job/...
umustipendie.varbi.com
Postdoctoral scholarship (2 years) - The assessment of long-term Fennoscandian monitoring data to predict future trajectories of northern lake productivity
The Department of Ecology and Environmental Science is offering a postdoctoral scholarship focusing on understanding global change impacts on essential elements in northern lakes and the potential thr
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Carl T. Bergstrom @carlbergstrom.com · 31/01/2025
This is not business as usual. It’s not just a change in funding priorities going forward; it is the reneging on funding agreements and is profoundly disruptive for even those grants that will be found to be compliant. Meanwhile, trainees who often live paycheck to paycheck are going unpaid.
science.org
EXCLUSIVE: NSF starts vetting all grants to comply with Trump’s orders
Grantee accounts remain frozen, while union accuses NSF of ignoring rules governing peer review
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Ricard Solé @ricardsole.bsky.social · 05/01/2025
My drawing below illustrates the importance of spatial ecology for stability: if we ignore space, it's like everyone dancing on the tip of a pin. When space is included (and complex dynamics, too), diversity is easily sustained.
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Hilary McMillan @mcmillanhydro.bsky.social · 14/01/2025
Interested in headwater streams? Headwaters make up 77% of global river networks, but have fewer gauges, less accurate models and lesser protections than large rivers. See our review led by @goldenwater.bsky.social at www.nature.com/articles/s44...
nature.com
Advancing the science of headwater streamflow for global water protection - Nature Water
Despite their substantial contributions to watershed resilience, headwater streams are becoming increasingly imperilled. This Perspective summarizes the status of headwater streamflow information and ...
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Gerard Rocher-Ros @grocherros.bsky.social · 24/01/2025
"Abrupt transformation of west Greenland lakes following compound climate extremes associated with atmospheric rivers". This new article in PNAS by Jasmine Saros and colleague Vendy Hazuková is pretty striking www.pnas.org/doi/full/10....
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Robin Rohwer @robinrohwer.bsky.social · 22/01/2025
Today is the one-year anniversary of finishing my recent @naturemicrobiol.bsky.social paper's final draft 📝. It is also my son's 1st birthday 🐣. Seems like a good time for an explainer thread! (1/n) @archaeal.bsky.social @quendi.bsky.social @sarilog.bsky.social www.nature.com/articles/s41...
nature.com
Two decades of bacterial ecology and evolution in a freshwater lake - Nature Microbiology
A 471-metagenome time series from Lake Mendota in Wisconsin, USA, reveals seasonal and decadal shifts in bacterial functional and ecological dynamics, especially in response to environmental extremes.
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Gerard Rocher-Ros @grocherros.bsky.social · 23/01/2025
We have a new paper out! During my stay in Blanes, Susana Bernal led this great work: "Expanding towards contraction: the alternation of floods and droughts as a fundamental component in river ecology", now published in Biogeochemistry link.springer.com/article/10.1...
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Chaopeng Shen @chaopengshen.bsky.social · 22/01/2025
I won't come here empty-handed. Our paper “Sensitivity-Constrained Fourier Neural Operators for Forward and Inverse Problems” has been accepted into ICLR 2025 main, a premier AI conference. Stay tuned for the paper --- will make some minimum edits for the camera-ready version!
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IceLab @icelabumu.bsky.social · 13/01/2025
As of January 1st, Stress Response Modeling at IceLab has officially welcomed @grocherros.bsky.social as a new Assistant professor! Read more about Gerard: www.umu.se/en/feature/r... #complexsystems #ecology #environmentalscience #climatechange #carbonflows
umu.se
From land to sea with a focus on the climate
Gerard Rocher-Ros wants to understand the flow of carbon and nutrients to find solutions to climate change.
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Gerard Rocher-Ros @grocherros.bsky.social · 14/01/2025
I'm hiring, two fully funded PhD positions! Come work in Umeå in Arctic Sweden, a leading place for high-latitude ecosystem ecology and carbon biogeochemistry
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clydecia2020.bsky.social @clydecia2020.bsky.social · 09/01/2025
Check out our new paper where we zoom in to the boreal forests to investigate aboveground and belowground trait coordination across a large number of species. www.nature.com/articles/s41...
nature.com
Aboveground and belowground trait coordination across twelve boreal forest tree species - Scientific Reports
Scientific Reports - Aboveground and belowground trait coordination across twelve boreal forest tree species
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Science Magazine @science.org · 27/12/2024
A study of 2.9 million rivers worldwide reveals large shifts in global river flow patterns over the past 30 years. The results emphasize the critical yet changing role of upstream rivers in flood dynamics and the far-reaching consequences for both natural and human systems.
scim.ag
More flow upstream and less flow downstream: The changing form and function of global rivers
We mapped daily streamflow from 1984 to 2018 in approximately 2.9 million rivers to assess recent changes to global river systems. We found that river outlets were dominated by significant decreases in flow, whereas headwaters were 1.7 times more likely...
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Gerard Rocher-Ros @grocherros.bsky.social · 21/12/2024
The sun barely peeks above the horizon in the winter solstice in Umeå - but we still have homegrown tomatoes at latitude 63!
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Gerard Rocher-Ros @grocherros.bsky.social · 20/12/2024
In January I'm starting as an Assistant Professor in Ecosystem Ecology, and will be part of @icelabumu.bsky.social ! IceLab is an interdisciplinary center with an open and stimulating environment, and being there is my dream job. Now we are starting a research school with multiple PhDs available 👇
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Global Ecology 🌐 @global-ecology.bsky.social · 13/12/2024
Daily streamflow from 1984 to 2018 in approximately 2.9 million rivers globally. 👉 The numbers set the play! More flow upstream and less flow downstream. 👉 The title says it all! Incredible dataset on the hydrosphere awaiting to be crossed with biosphere data! 🧪🌐🌍 www.science.org/doi/10.1126/...
science.org
More flow upstream and less flow downstream: The changing form and function of global rivers
We mapped daily streamflow from 1984 to 2018 in approximately 2.9 million rivers to assess recent changes to global river systems. We found that river outlets were dominated by significant decreases i...
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Permafrost Pathways @permafrostpathways.bsky.social · 13/12/2024
Closing out our #AGU24, Zoë Dietrich @woodwellclimate.bsky.social presented results from the autonomous monitoring chambers she builds to measure methane and carbon dioxide in #Arctic ponds and wetlands! Read more background here: www.woodwellclimate.org/zoe-dietrich... B51D - Convention Center A
woodwellclimate.org
DIY science: Building a Floating Methane Chamber - Woodwell Climate
Research Assistant Zoë Dietrich engineered her own methane chambers to help climate scientists better understand global carbon fluxes.
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Dr. Merritt Rae Turetsky @queenofpeat.bsky.social · 10/12/2024
I presented my #AGU24 talk this morning and wanted to summarize my take homes. 20 yrs ago I created the Alaska Peatland Experiment (APEX) to experimentally push hydrology into wetter and drier modes. CO2 emissions are remarkable stable while CH4 is very high with flooding. 1/
Image of the Alaska Peatland Experiment fen.
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Jacquelyn Gill @jacquelyngill.bsky.social · 11/12/2024
There are about 27,000 scientists at #AGU24, and about half of them work on climate one way or another. Whenever I walk into a room like this, I always take a moment to take it all in—all these people dedicated their lives to working on some of our toughest problems. That gives me strength.
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