Stephen R. Carpenter

Steve Carpenter

@steve-carpenter.bsky.social

690 followers 210 following 17 posts

Ecosystem science, Global change, Assessments and Scenarios. Co-EiC of Ecosystems with @MonicaGTurner.bsky.social. My website:
https://limnology.wisc.edu/faculty/stephen-r-carpenter/

Videos

Stephen Russell Carpenter is an American lake ecologist who focuses on lake eutrophication which is the over-enrichment of lake ecosystems leading to toxic blooms of micro-organisms and fish kills. .. more

Environmental science 72%

Geography 19%

Posts Replies Media Videos

Reposted by Stephen R. Carpenter

Scott Dworkin @dworkin.bsky.social · 17d

The billboard message they DON'T want troops to see (Veterans put it up anyway)

Details here: www.dworkinsubstack.com/p/massive-da...

Reposted by Stephen R. Carpenter

Scott Dworkin @dworkin.bsky.social · 17d

The massive day of action the Trump regime hoped you wouldn't hear about

Massive Day Of Action Shows A Nation Rejecting Trump, Crockett Introduces Bill To End Secret Deportation Flights, and Veterans Back Mark Kelly

The resistance is rising on every front

www.dworkinsubstack.com

Reposted by Joanna Bryson, Nancy Kanwisher, Stephen R. Carpenter , and 35 more Joanna Bryson, Nancy Kanwisher, Stephen R. Carpenter, Shadd Maruna, John Horgan, John McLaren, Robert W. Wallace, Henning Melber, Erica Chenoweth, Fabián Muniesa, Joseph Schafer, Inderjeet Parmar, Daniel W. Drezner, Jo Barraket, W. Andy Knight, Gerald Friedman, Tom Griffin, Stacy D. VanDeveer, Richard Larouche, Erol Akçay, Jen Schneider, Mary Jane Curry, Sharon Erickson Nepstad, Nelson Flores, Richard M. Carpiano, Hugh Davies, Meredith Farkas, Christina Pagel, Charles T. Mathewes, Thomas E. Murray, Francesco Nicoli, Juliet Johnson, Colin Woodard, Kevin Grant, Élisabeth Vallet, Peter Jacobs, Kristina McElheran, Patrick D. Culbert

Will Stancil @whstancil.bsky.social · 18d

in case you're curious about how angry Minnesota is about ICE, it was -20 today

Razzball @razzball.bsky.social · 18d

Minnesota is the best of us.

Daniel Swain @weatherwest.bsky.social · 18d

Attention folks in the weather, climate, disaster, wildfire, and Earth science communities: NSF has just published a new "Dear Colleague" letter inviting feedback (by Mar 13) on the proposal to dismantle the National Center for Atmospheric Research (NCAR). www.nsf.gov/funding/...

Reposted by Elizabeth Sharrow, Ben H. Ansell, Steven Heydemann , and 9 more Elizabeth Sharrow, Ben H. Ansell, Steven Heydemann, Stephen R. Carpenter, Steve Peers, Steven S. Smith, Anders Nilsson, Trevon D. Logan, Pamela K. Gilbert, Nathan P. Kalmoe, Jaap Kooijman, Adam M. Kleinbaum

Christopher Terry @christopherterry.bsky.social · 18d

They are never, ever going to win in Minnesota.

Reposted by Anna O. Law, Stephen R. Carpenter, Nicholas A. Christakis , and 3 more Anna O. Law, Stephen R. Carpenter, Nicholas A. Christakis, Iryna Dronova, Ryan K. Brook, Kathleen Kennedy

Hope Jahren @realhopejahren.bsky.social · 18d

MN protestors #protip put 2 Idaho Russets in the oven at 420 degrees for 45 min, take them out and foil wrap, 1 in each pocket before you go out. Theyll stay warm for 3-4 hours even in this weather and you can eat em when you like. They used to send us kids out like this back in the 70s trust me.

Reposted by Rebecca Solnit, Stephen R. Carpenter, David Dunning , and 8 more Rebecca Solnit, Stephen R. Carpenter, David Dunning, Juan Cole, Jonathan Hopkin, Silvia Secchi, Nazita Lajevardi, Juan Moreno‐Cruz, Michael D. McDonald, Dean Eckles, Melissa Sweet

Elliott Payne @elliottpayne.org · 19d

Statement from the entire Minneapolis City Council in support of a General Strike and Day of Truth & Freedom on January 23rd.

"Minnesota is deeply grounded in the values of community, compassion, dignity, and solidarity. The violent actions of federal agents have had profound effects on families and communities across our city and state, creating an environment of chaos, fear, and disruption in our neighborhoods. This federal operation has made life difficult for many residents to shop for groceries, go to work, take their children to school, or keep their small businesses open. When residents are brutalized and profiled, families are torn apart, and children are arrested, our communities are not any safer. We continue to demand that ICE, and all federal agents leave our state immediately. Minnesotans have a long tradition of activism, protest, and civic engagement during significant inflection moments in our state. A broad coalition of labor organizations, faith communities, community-based organizations, students, small businesses, and workers have called for a statewide Day of Truth and Freedom as a time for solidarity, community, mutual aid, and protest. The Minneapolis City Council fully supports this action as a time to exercise your constitutional rights, to express support for our neighbors, and demand the end of this federal occupation. We acknowledge and respect the diverse ways individuals, families, essential workers, students, and businesses may choose to observe this day and support our community.
Together, with our community, the City Council reaffirms our commitment to civic expression, community safety, and our immigrant neighbors. We will continue the work of ensuring justice, freedom, and dignity for all during and beyond this occupation."

Reposted by Stephen R. Carpenter, Roger C. Bales

Ian James @ianjames.bsky.social · 20d

U.N. experts say the world has entered an era of global "water bankruptcy"

"For too long, we have been living beyond our hydrological means." @kavehmadani.bsky.social @unuinweh.bsky.social www.latimes.com/environment/...

'Water bankruptcy' — U.N. scientists say much of the world is irreversibly depleting water

With many rivers and aquifers tapped beyond their limits, UN scientists say the world is entering an era of 'water bankruptcy.'

www.latimes.com

Reposted by Stephen R. Carpenter, Jonathan A. Foley

Project Drawdown @projectdrawdown.bsky.social · 20d

Methane has driven about one-third of warming to date 🔥 and is far more potent than CO₂ in the short term. Learn about solutions in latest Insights piece from Emily Cassidy, Research Associate and Paul West, Senior Scientist: https://bit.ly/3NqBEkx
@enviroem.bsky.social @paul-west.bsky.social

Reposted by Stephen R. Carpenter

Eos @eos.org · 20d

Did you know that soil around the world is getting more salty? That's a big problem for ecosystems, soil health, global food security, and socio-economic stability. 🧪

eos.org/editors-vox/...

Soil Salinization: A Rising Threat to Ecosystems and Global Food Security - Eos

As soil salinization intensifies, it poses serious threats to ecosystems, soil health, global food security and socio-economic stability.

eos.org

Reposted by Stephen R. Carpenter

Garry Peterson @resiliencesci.bsky.social · 20d

Madhav Gadgil (1942-2026): People’s scientist
frontline.thehindu.com/other/obitua...
"Ecologist and public intellectual, he founded ecological studies in India and spent six decades insisting conservation must begin with communities"

Madhav Gadgil: Ecology, Justice, and the Western Ghats

Scientist, activist, and dissenter, Gadgil built India’s ecological thought around communities. His research and movements show how biodiversity loss, caste, and class exploitation are inseparable in ...

frontline.thehindu.com

Reposted by Monica G. Turner

Steve Carpenter @steve-carpenter.bsky.social · 21d

@monicagturner.bsky.social @goodgracious23.bsky.social

Steve Carpenter @steve-carpenter.bsky.social · 21d

Ecosystem experiments: How does rate of forcing affect resilience, early warnings and critical transitions? Brock and others in ECOSYSTEMS rdcu.be/eZXqb or
DOI 10.1007/s10021-025-01042-y

Reposted by Garry Peterson, Andrew L. Rypel

Steve Carpenter @steve-carpenter.bsky.social · 21d

Ecosystem experiments: How does rate of forcing affect resilience, early warnings and critical transitions? Brock and others in ECOSYSTEMS rdcu.be/eZXqb or
DOI 10.1007/s10021-025-01042-y

Reposted by Stephen R. Carpenter

Garry Peterson @resiliencesci.bsky.social · 21d

Canadian PM
www.cpac.ca/headline-pol...

"Let me be direct: We are in the midst of a rupture, not a transition...The middle powers must act together because if you are not at the table, we’re are on the menu”

www.cbc.ca/news/politic...

World Economic Forum: Special Address by PM Mark Carney

Prime Minister Mark Carney delivers remarks and participates in a discussion while attending a meeting of the World Economic Forum (WEF) in Davos, Switzerland. Joining the prime minister are Laurenc...

www.cpac.ca

Reposted by Stephen R. Carpenter

David Ho @davidho.bsky.social · 26d

A life well lived. Read this if you want to feel better about people.

Renfrew Christie Dies at 76; Sabotaged Racist Regime’s Nuclear Program

www.nytimes.com

Reposted by Stephen R. Carpenter

Jonathan Tonkin @jdtonkin.bsky.social · 26d

Most of us won’t be remembered — and that’s OK. But what will your grandchildren inherit from you?

Better legacy

Being a good ancestor in an age of short-term thinking

predirections.substack.com

Reposted by Stephen R. Carpenter

AltYellostoneNatPar @altyellonatpark.org · 26d

Good morning from @altyellonatpark.org

All our public lands should look like this

Herd of bison crossing the snow covered plains

Reposted by Stephen R. Carpenter

Garry Peterson @resiliencesci.bsky.social · 26d

25 years of Wikipedia
wikimediafoundation.org/news/2026/01...

the giant of the nonprofit internet

"With over 65 million articles, in 300+ languages, Wikipedia is the home of trusted information online...the only website among the top 10 most visited that is hosted by a nonprofit organization"

Home – Wikimedia Foundation

We support protect fund openhuman knowledge We are the nonprofit that hosts Wikipedia. We support the people, technology, and policies that enable reliable information to be shared with the world. Hel...

wikimediafoundation.org

Reposted by Stephen R. Carpenter

Dr. Merritt Rae Turetsky @queenofpeat.bsky.social · 27d

Folks, this deep pit in interior Alaska, swallowing the ground and mature trees, developed over a week or two as permafrost became unstable. Imagine what will happen to the North with prolonged warmth and warm rainfall.

Reposted by Stephen R. Carpenter

Garry Peterson @resiliencesci.bsky.social · 27d

Hungary's Lake Balaton froze almost completely in recent days, marking the first time the massive lake has frozen in the past decade.
www.youtube.com/watch?v=o0oP...

see also:
uu.diva-portal.org/smash/get/di...

Hungary's Lake Balaton freezes for the first time in years | REUTERS

YouTube video by Reuters

www.youtube.com

Reposted by Stephen R. Carpenter

AltYellostoneNatPar @altyellonatpark.org · Dec 25

Welcome twitter refugees on this fine Christmas morning.

Yes we're the original @AltYelloNatPark
Yes we're now a 501c3
Yes we advocate for our national parks & forests

Come get your park on at AltYelloNatPark.org

Follow
Retweet and
Repeat ;-)

All photos by Yours Truly unless otherwise noted

Reposted by Stephen R. Carpenter

Sentient @sentientmedia.org · Dec 23

Chris Jones, who currently serves as president of the environmental advocacy group Driftless Water Defenders, has long been a critic of industrial agribusiness in Iowa.

Now, he’s considering running for Secretary of Agriculture in the state.

Chris Jones. Text is a quote from him that reads:
I think we need to rethink agriculture. Nobody’s happy. So why are we going to keep doing what we’re doing here with the corn, soy, CAFO scheme?

Reposted by Stephen R. Carpenter

Yale Climate Connections @climateconnections.bsky.social · Dec 23

Scientists call this “continental drying”:

A slow-motion water crisis is unfolding around the world » Yale Climate Connections

Many land areas are drying out as glaciers melt, soils lose moisture, and groundwater levels fall.

yaleclimateconnections.org

Reposted by Stephen R. Carpenter

Ankur Desai @profdesai.bsky.social · Dec 23

NCAR has been the magic sauce that has made weather/climate studies and advances in US and the world over great. madison.com/news/local/e... www.jsonline.com/story/news/e...

Trump’s closure of national weather center may imperil UW-Madison research

The planned closure of the National Center for Atmospheric Research would endanger decades of research at UW-Madison and UW-Milwaukee, scientists say.

madison.com

Reposted by Stephen R. Carpenter, David N. Thomas, Alessandro Tagliabue , and 1 more Stephen R. Carpenter, David N. Thomas, Alessandro Tagliabue, John R. Hutchinson

The Royal Society @royalsociety.org · Dec 21

#OnThisDay in 1872, the expedition of HMS Challenger set sail from Portsmouth, travelling nearly 70,00 nautical miles and cataloguing over 4000 unknown species over 4 years. This pioneering expedition, organised by the Royal Society, laid the foundations of oceanography.

Reposted by Stephen R. Carpenter

Garry Peterson @resiliencesci.bsky.social · Sep 30

The Traffic Noise Externality: Costs, Incidence and Policy Implications
Moretti+
eml.berkeley.edu/~moretti/noi...

"aggregate economic cost of traffic noise at $110 billion" in USA

a "shift to electric vehicles...could yield noise reduction benefits of $77.3 billion"

per capita ev benefits by USA county - This figures contains estimates of the current per capita benefits of EVs in counties across the U.S.
We use the statewide total number of EVs from the U.S. Department of Energy for 2023. We include plug-in
Hybrid EVs in this calculation. We allocate EVs across all counties according to the share of EV charging ports
within the state located in that county. The locations of EV charging ports are from the Joint Office of Energy
and Transportation and are current as of March 2025. We then calculate the share of all personal vehicles in
the county that are EVs using the 2019-2023 American Community Survey. We then multiply this share by
the potential benefits of 100% EVs according to the analysis in Table 9.

Reposted by Stephen R. Carpenter

Garry Peterson @resiliencesci.bsky.social · Sep 30

Dismissed as a joke, UK's first rice crop ripe for picking after hot summer
www.bbc.com/news/article...

"The trial is trying to answer big questions about how we can produce enough food and protect farmer's livelihoods in a world being altered by climate change."

UK's first rice crop ripe for picking after hot summer

Paddy fields are thriving in a quiet part of east England and might help feed us in the future.

www.bbc.com

Reposted by Stephen R. Carpenter

Proceedings of the National Academy of Sciences @pnas.org · Sep 29

The rate of expansion of tropical cyclones increases with the relative sea surface temperature (SST), which is the difference between local SST and the tropical mean temperature. These changes in relative SST will complicate storm forecasting. In PNAS: www.pnas.org/doi/10.1073/...