John (Jack) Williams
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iceageecologist.bsky.social
John (Jack) Williams
@iceageecologist.bsky.social
880 followers 700 following 33 posts

Climate change ecologist, paleoecologist, biogeographer, open data scientist.
Prof. at UW-Madison, co-leader of Neotoma Paleoecology Database www.neotomadb.org
Fearless sifter and winnower. All posts my own.

Videos
Environmental science 45%
Geology 17%
Posts Replies Media Videos

iceageecologist.bsky.social
John (Jack) Williams @iceageecologist.bsky.social · 21h
Are you a paleoecologist & ECR active on social media? Interested in a leadership role at Neotoma DB? Apply to be Neotoma’s Social Media Manager!

Contact Nick Hoffman (hoffmanick@gmail.com) by Feb 28 with interest (<500 words) + a strategy proposal (<1000 words).

Reposted by John W. Williams, Robert W. Wallace, Rosemary A. Joyce , and 4 more

christopherjhale.bsky.social
Christopher Hale @christopherjhale.bsky.social · 1d
Pope Leo’s top U.S. ally — Cardinal Joseph Tobin — calls on Congress to defund ICE.

iceageecologist.bsky.social
John (Jack) Williams @iceageecologist.bsky.social · 1d
Excited to be part of this cool new theory paper exploring how lagged ecological responses at the species and community level can lead to reduced ecosystem function and often seemingly paradoxical responses at different timescales. Nice work by @mishastemkovski.bsky.social leading this one!

Reposted by Brian J. Enquist, John W. Williams, James M. Bullock , and 5 more

mishastemkovski.bsky.social
Michael (Misha) Stemkovski @mishastemkovski.bsky.social · 2d
Species shift their ranges in response to climate change, but many can't keep up. The resulting "community-climate disequilibrium" can impair ecosystem function and cause counterintuitive dynamics, like short-term gain but long-term loss onlinelibrary.wiley.com/doi/10.1111/...
Linking Community‐Climate Disequilibrium to Ecosystem Function
When turnover in species composition lags behind the pace of climate change, community-climate disequilibrium increases. We, for the first time, explicitly link this disequilibrium to ecosystem funct...
onlinelibrary.wiley.com

Reposted by John W. Williams

gtconway.bsky.social
George Conway ⚖️🇺🇸 @gtconway.bsky.social · 3d
I just checked—it turns out that Art. II, Sec. 1 of the Constitution of the United States does *not* say "The executive Power shall be vested in a bunch of sociopaths who think they can do whatever the fuck they want and make shit up as they go along."

Reposted by Brian J. Enquist, John W. Williams, Kevin J. Anchukaitis

weatherwest.bsky.social
Daniel Swain @weatherwest.bsky.social · 4d
I would strongly encourage those who value the scientific & societal legacies of NCAR to offer feedback by March 13. I would expect, under present circumstances, perspectives from industry partners will be especially critical, though everyone's voice is of course important.

Reposted by Valerie M. Delmotte, John W. Williams, Benjamin I. Cook

hausfath.bsky.social
Zeke Hausfather @hausfath.bsky.social · 5d
Your regular reminder that when folks say "its cold outside where I live, what happened to global warming?" that the world is big, and weather still exists.

Reposted by John W. Williams

scinews.bsky.social
Science News @scinews.bsky.social · 7d
Eight reasons I rejected your article

www.elsevier.com/connect/8-re...

Reposted by Anna O. Law, John W. Williams, Gavin A. Schmidt , and 14 more

ljrissler.bsky.social
Leslie Rissler @ljrissler.bsky.social · 10d
The National Science Foundation sign on our Eisenhower Av building is now gone.

The NSF mural in the foyer is removed and torn off in sheets.

We were supposed to celebrate the 75th anniversary of the agency in May 2025. That never happened.
NSF building on Eisenhower Av. HUD now owns. Destroying the NSF mural in the foyer. Of the Eisenhower building.

Reposted by John W. Williams

orc.bsky.social
Orc Girl Boss 🐇 @orc.bsky.social · 10d
FURRIES RISE UP

Reposted by John W. Williams

gelliottmorris.com
G Elliott Morris @gelliottmorris.com · 19d
New polling from Civiqs finds support for abolishing ICE has reached a new high. Other polls have shown a decrease in the agency's approval rating, and broad anxiety about agents' use of force to accomplish Trump's agenda
www.gelliottmorris.com/p/support-fo...
Support for abolishing ICE is at a new high
Americans have turned sharply against Immigration and Customs Enforcement, and say it too often resorts to violence
www.gelliottmorris.com

Reposted by Ben Bond‐Lamberty

iceageecologist.bsky.social
John (Jack) Williams @iceageecologist.bsky.social · 28d
Just in time for the holidays - new lab paper out by Wiles et al that presents a new mapping of climate-driven ecotonal shifts in Michigan over the last 11,000 years and assesses whether ecotonal systems are more sensitive to climate change. onlinelibrary.wiley.com/doi/10.1111/...
Are Ecotonal Systems More Sensitive to Climate Change? Past Ecotonal Dynamics and Rates of Vegetation Change in Michigan
Aim Ecotones are expected to be sensitive to climate change, but supporting evidence is scarce. Here we test the ecotonal sensitivity hypothesis by reconstructing past movements of a major temperatu...
onlinelibrary.wiley.com

iceageecologist.bsky.social
John (Jack) Williams @iceageecologist.bsky.social · Dec 17
Abram: IPCC AR7 WG1 will have chapters on tipping systems, overshoot, and regional deep dives. Lots of opportunities for paleoclimate science to contribute. #AGU25

iceageecologist.bsky.social
John (Jack) Williams @iceageecologist.bsky.social · Dec 17
Losing NCAR would be a devastating blow to the US scientific community. It's proposed cut makes no sense whatsoever. Other countries will race to take over the scientific leadership if we recklessly squander it.

Reposted by Katharine Hayhoe, John W. Williams, Gavin L. Foster , and 1 more

michaelemann.bsky.social
Michael E. Mann @michaelemann.bsky.social · Dec 17
"Not since the ransacking of the Library of Alexandria have we witnessed such a wanton, intentional assault on scientific knowledge."

Reposted by John W. Williams

globalecoguy.bsky.social
Dr. Jonathan Foley @globalecoguy.bsky.social · Oct 29
Come work with us!

We have three openings right now.
projectdrawdown.bsky.social Project Drawdown @projectdrawdown.bsky.social · Oct 28
We currently have openings for a Senior Analyst, Climate Philanthropy and Investing; Program Manager, Global Strategic Partnerships; and Research Fellow. Check out our Careers page to learn more and apply today! #hiring #climatejobs drawdown.org/careers
Careers
Project Drawdown careers page.
drawdown.org

Reposted by John W. Williams

resiliencesci.bsky.social
Garry Peterson @resiliencesci.bsky.social · Oct 24
Biodiversity Postdoctoral Fellowship, 2-year (2026-2028) - 2 positions OPEN

UBC, Vancouver, Canada
biodiversity.ubc.ca/training-and...

"The UBC Biodiversity Research Centre comprises over 100 faculty members with interests in ecology, evolution, systematics, biodiversity, and conservation"
Postdoctoral Fellowship Opportunities
Biodiversity Postdoctoral Fellowship, 2-year (2026-2028) - 2 positions OPENAt UBC, we believe that attracting and sustaining a diverse workforce is key to the successful pursuit of excellence in resea...
biodiversity.ubc.ca

Reposted by John W. Williams, Kevin J. Anchukaitis

margelab.bsky.social
Nathalie Goodkin @margelab.bsky.social · Sep 6
AMNH is hiring a tenure track Assistant Curator/Professor in Climate Physics. You can find the posting here: careers.amnh.org/postings/4579
Assistant Curator in Climate Physics: Atmosphere or Ocean
The Division of Physical Sciences at the American Museum of Natural History (AMNH) seeks an outstanding colleague to join the Department of Earth and Planetary Sciences (EPS). This is an Assistant lev...
careers.amnh.org

Reposted by John W. Williams, Stephen D. Murphy

nicrawlencenz.bsky.social
Nic Rawlence @nicrawlencenz.bsky.social · Aug 9
Check out this great article in the US magazine Slate by their Dunedin based reporter about why the moa should not be brought back from extinction. slate.com/technology/2...
Those De-Extinct Dire Wolves Were a Warning. Well, the Next Phase Is Coming.
It involves a giant flightless bird.
slate.com

Reposted by Brian J. Enquist, John W. Williams, Steve Peers

alexwitze.bsky.social
Alexandra Witze @alexwitze.bsky.social · Aug 8
Trump's new executive order "looks like an explicit attempt to destroy peer review for federal science grants,” a physicist in Texas tells @dangaristo.bsky.social. 🧪

www.nature.com/articles/d41...
Trump order gives political appointees vast powers over research grants
Researchers are alarmed that the move might upend a long-standing tradition of peer-review for grants.
www.nature.com

Reposted by Ben Bond‐Lamberty, John W. Williams

ethanwhite.weecology.org
Ethan White @ethanwhite.weecology.org · Aug 8
Interested in helping out with one of the most innovative, grassroots, publishing efforts around? The Journal of Open Source Software (@joss-openjournals.bsky.social) is looking for editors. We conduct collaborative checklist-based peer review of research software using GitHub issues.
Call for editors | Journal of Open Source Software Blog
Blog for the Journal of Open Source Software • <a href='https://joss.theoj.org'>https://joss.theoj.org</a>
blog.joss.theoj.org

Reposted by John W. Williams, David J. Galbreath

hausfath.bsky.social
Zeke Hausfather @hausfath.bsky.social · Jul 29
2025 has seen the second warmest first half of the year on record after 2024 – and is on track to be the second or third warmest year since records began in 1850. My latest State of the Climate report over at Carbon Brief: www.carbonbrief.org/...

Reposted by John W. Williams, Enrique Fatás, Daniel Zappala , and 3 more

jacquelyngill.bsky.social
Jacquelyn Gill @jacquelyngill.bsky.social · Feb 18
Firings are happening right now at the National Science Foundation. Essential staff are being cut.

This isn’t about the budget. If it was, they’d be going after the military (17%) or state appropriations (38%). NSF is 0.7% of the federal budget. All federal employees make up only 4% of the budget.

Reposted by Brigitte Nerlich, John W. Williams

davidho.bsky.social
David Ho @davidho.bsky.social · Jul 22
Good news! Trump sought to eliminate NOAA's Oceanic and Atmospheric Research (OAR), which would have led to the closure of NOAA Research Labs. Among other important climate research, this would have meant eliminating the Keeling Curve.

The Senate Appropriations Committee said no!

bit.ly/3TShZKk
NOAA OCEANIC AND ATMOSPHERIC RESEARCH The Committee's recommendation provides $657,053,000 for the Office of Oceanic and Atmospheric Research. OAR programs provide environmental research and technology needed to improve NOAA weather forecasts, climate predictions, and marine services. To accomplish these goals, OAR supports a network of scientists in its Federal research laboratories, universities, and joint institutes and partnership programs. The budget request proposes eliminating OAR, potentially terminating many of its programs and transferring others to operational NOAA line offices, such as the National Weather Service and NOS While the Committee could be open to realigning some programs to enhance operational outcomes, the absence of detailed plans hinders informed decision-making. Consequently, the Committee maintains funding

Reposted by Peter Thorne, John W. Williams, Kevin J. Anchukaitis , and 1 more

carlsonlab.bsky.social
The Carlson Lab @ Yale @carlsonlab.bsky.social · Jul 21
In a few weeks, we'll be publishing the finding that [redacted] people die every year because of climate change, equivalent to a loss of $[redacted]T USD, every year.

Here's what it costs us to open that publication to you. We have no federal grants for that work, and can't apply for them.
$12,690 OA fees for Nature Climate Change

Reposted by John W. Williams

napaaqtuk.bsky.social
Dr. Kat Napaaqtuk❄️ @napaaqtuk.bsky.social · Jul 21
I'm back home with my dad and have thoughts about being an Indigenous scientist and academic. I'm writing this in real time so it might get disrupted and will have typos.

I am fairly successful by academic standards. I have a tenure track job, wrote papers, have grant funding, mentor students.

iceageecologist.bsky.social
John (Jack) Williams @iceageecologist.bsky.social · Jul 18
Two good #AGU2025 sessions about vegetation-climate interactions and past ecosystems... abstracts due July 30!
PP019: Modeling and Reconstructing Vegetation-Climate Interactions in the Past.
PP026: Paleoecological Perspectives on Past Climates
Section: Paleoceanography and Paleoclimatology

Reposted by John W. Williams

iceybethan.bsky.social
Bethan Davies @iceybethan.bsky.social · Jul 18
Hi folks. I’m doing a panel. Hit me with your best networking tips for your academic career. Conference or meeting networking, professional networking - give me your best tips for ECRs and I’ll pass them forward for my panel!

Reposted by John W. Williams

globalecoguy.bsky.social
Dr. Jonathan Foley @globalecoguy.bsky.social · Jul 14
This is a great article by Bill McKibben @billmckibben.bsky.social on how solar power hit an inflection point and has now become an unstoppable force.

A must read.

www.newyorker.com/news/annals-...
4.6 Billion Years On, the Sun Is Having a Moment
In the past two years, without much notice, solar power has begun to truly transform the world’s energy system.
www.newyorker.com

Reposted by John W. Williams

sarahweinman.com
Sarah Weinman @sarahweinman.com · Jul 13
Very sorry to learn that Martin Cruz Smith, author of the incomparable Arkady Renko series, has died. My deepest condolences to his family, including @luisacruz.bsky.social.

His final book, HOTEL UKRAINE, was published earlier this month and was a fitting send-off to the series.