Arthur Gessler
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arthurobuntspecht.bsky.social
Arthur Gessler
@arthurobuntspecht.bsky.social
4.2K followers 6.9K following 360 posts

#Ecosystem Science and Impacts of #Climate Change; #Forest #Ecology; #Biodiversity.
| Ecosystem Ecology group at @wslresearch.bsky.social |
| Professor at @usyseth.bsky.social |
| Head of the @SwissForestLab.bsky.social | .. more

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Environmental science 50%
Agriculture 15%
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Reposted by Arthur Geßler

darcy-davidson.bsky.social
darcy-davidson.bsky.social @darcy-davidson.bsky.social · 13h
Stand up for science on March 7th!
@standupforscience.bsky.social
If we don’t stand up no one will

Reposted by Arthur Geßler

steamtraen.eu
Nick Brown @steamtraen.eu · 1d
"While it is very interesting, I feel that your article might be better suited to a specialist journal", rock'n'roll edition.

Reposted by A. E. Dessler, Arthur Geßler, Stephen D. Murphy

rahmstorf.bsky.social
Prof. Stefan Rahmstorf @rahmstorf.bsky.social · 1d
I also have often made this observation stated below: the arguments of the deniers of human-caused climate change are so poor, so easily refuted, and intended only for gullible lay people, that they basically prove how strong and compelling the evidence for human-caused climate change really is.
andrewdessler.com Andrew Dessler @andrewdessler.com · 1d
I've been getting a lot of requests from reporters for comments about the removal of the DOE Climate Working Group report from the EPA's repeal of the endangerment finding.

Here are some comments:
The EPA's decision not to rely on the DOE Climate Working Group report for the Endangerment Finding repeal is appropriate. The report’s fundamental flaws make it unsuitable as a basis for policy decisions. The report demonstrates systematic methodological failures. It relies heavily on cherry-picked studies while omitting contrary evidence from the peer-reviewed literature. Key findings are presented in ways that misrepresent what the underlying research actually shows. These are not minor errors—they are the kinds of problems that would render a scientific analysis indefensible in any rigorous review process, including judicial review. The process itself also failed to meet basic scientific standards. The report was not peer reviewed and certainly appears to be working backward from a pre-determined conclusion. The DOE received substantial public comments challenging the report’s conclusions after the public release but never responded to them. A credible scientific assessment requires engagement with contrary evidence and criticism, not silence. Notably, the Climate Working Group’s membership are the cream of the crop of climate contrarians. The DOE report therefore represents the best case against mainstream science. That they produced a report that is so lacking in credibility actually demonstrates how strong mainstream climate science actually is.

Reposted by Valerie M. Delmotte, Arthur Geßler, Sabine Pahl

agu.org
AGU (American Geophysical Union) @agu.org · 2d
The science is clear. The stakes are real.

AGU condemns the repeal of the EPA Endangerment Finding — a decision that rejects the overwhelming evidence and undermines climate accountability.

We will continue to defend science and advocate for evidence-based policy.

buff.ly/wX1BQ2t

Reposted by Arthur Geßler

wslresearch.bsky.social
WSL Umweltforschung @wslresearch.bsky.social · 3d
Happy International Day of Women and Girls in Science!
🧬🧪🥼
#WomenInScience #WomenInStem #FraueninderWissenschaft #FraueninMINT #MintFrauen #InternationalDayOfWomenAndGirlsInScience @women__in__stem @mint_leben

Reposted by Arthur Geßler

newphyt.bsky.social
New Phytologist @newphyt.bsky.social · 21d
#TansleyReview: Rethinking the 2H fingerprint of carbohydrates: a novel proxy for #plant #metabolism and performance

Holloway-Phillips et al.
👇

📖 nph.onlinelibrary.wiley.com/doi/10.1111/...

#LatestIssue @arthurobuntspecht.bsky.social @ma-cormier.bsky.social @lucascernusak.bsky.social
Fig. 6 Proposed benefit of an isotope-based carbon (C)-flux proxy.

arthurobuntspecht.bsky.social
Arthur Gessler @arthurobuntspecht.bsky.social · 23d
Needle anatomy with the endodermis as bottleneck for diffusion vs transpiration driven mass flow makes phloem loading complicated - here we provide suggestions „Towards better understanding of assimilate transfer and phloem loading in conifer trees“ dx.doi.org/10.1093/jxb/er…

Reposted by Arthur Geßler, Antonio J. Pérez‐Luque

wslresearch.bsky.social
WSL Umweltforschung @wslresearch.bsky.social · 26d
🍁 Can #drought in forests be detected from the air? During the hot summer of 2023, the WSL used #drones to investigate how different native tree species cope with excessive sunlight and water shortages: www.wsl.ch/en/news/dete... #WaterShortage #forest #research #trees 🌏
Detecting drought stress in trees from the air
WSL researcher Petra D’Odorico flies drones over forests to explore how native tree species respond to drought.
www.wsl.ch

Reposted by Arthur Geßler

wslresearch.bsky.social
WSL Umweltforschung @wslresearch.bsky.social · 26d
Lässt sich #Trockenheit in Wäldern aus der Luft erkennen? Im #Hitzesommer 2023 hat die WSL mit #Drohnen untersucht, wie unterschiedliche einheimische Baumarten mit übermässiger Sonneneinstrahlung und #Wassermangel umgehen. Mehr dazu: www.wsl.ch/de/news/troc... #Wald #Forschung
Trockenstress von Bäumen aus der Luft erkennen
Die WSL-Forscherin Petra D’Odorico lässt Drohnen über Wälder fliegen, um zu erkunden, wie einheimische Baumarten auf Trockenheit reagieren.
www.wsl.ch

Reposted by Arthur Geßler

usyseth.bsky.social
Departement Umweltsystemwissenschaften (D-USYS), ETH Zürich @usyseth.bsky.social · Jan 13
How do trees withstand drought?🌲🧪Research by Valentina Vitali and colleagues uses lasers to read tree rings like a "black box." 👉https://usys.ethz.ch/en/news-events/news/archive/2026/01/conifers.html @wslresearch.bsky.social

Reposted by Arthur Geßler, Martin Ehbrecht

wslresearch.bsky.social
WSL Umweltforschung @wslresearch.bsky.social · Jan 7
Der Klimawandel lässt Bäume früher austreiben, doch Hitze und Trockenheit bremsen das Wachstum. Besonders betroffen: Fichten, Weisstannen und Buchen. 🌳☀️https://www.wsl.ch/de/news/waelder-unter-klimastress-warum-baeume-trotz-fruehstart-weniger-wachsen #Klimawandel #Trockenstress
Ein Baumstamm, an dem ein Dendrometer installiert ist, ein Messgerät für den Wasserhaushalt des Baumes.

arthurobuntspecht.bsky.social
Arthur Gessler @arthurobuntspecht.bsky.social · Jan 3
New research: Urban green spaces boost housing values significantly! Water bodies & dense forests = highest premiums. Public green > private. Urban planners should prioritize public, wellplaced greenery to capture full social and economic returns www.authorea.com/users/1012016/…

Reposted by Matthias Cuntz, Drew Peltier

arthurobuntspecht.bsky.social
Arthur Gessler @arthurobuntspecht.bsky.social · Dec 29
New study provides the evidence for the pervasive presence of cryogenic vacuum distillation artefacts in leaf water and identifies deuterium exchange between organic matter and water as the primary underlying mechanism; @newphyt.bsky.social nph.onlinelibrary.wiley.com/doi/full/10....
Cryogenic vacuum distillation‐induced deuterium isotope biases in leaf water and their ecophysiological implications
Recent experiments show that cryogenic vacuum distillation (CVD) – the standard method for plant water extraction – can introduce biases into δ2H measurements of stem water. However, whether similar...
nph.onlinelibrary.wiley.com

Reposted by Graeme S. Cumming, Arthur Geßler, Juan Rocha

robertfinger.bsky.social
Robert Finger @robertfinger.bsky.social · Dec 28
Percentage of self-sufficiency for specific food groups*

From Stehl et al. Nature Food 2025 www.nature.com/articles/s43...

*National food availability from domestic production as proportion from recommended intake by the Livewell diet. 100% means that all recommendations of a food group are met.

Reposted by Arthur Geßler

newphyt.bsky.social
New Phytologist @newphyt.bsky.social · Dec 27
H isotopes in #plant #carbohydrates as a metabolic proxy

📖 nph.onlinelibrary.wiley.com/doi/10.1111/...
#TansleyReview by Holloway-Phillips et al.

@WIleyPlantSci #PlantScience

@arthurobuntspecht.bsky.social @ma-cormier.bsky.social @lucascernusak.bsky.social
Proposed benefit of an isotope-based carbon flux proxy.

arthurobuntspecht.bsky.social
Arthur Gessler @arthurobuntspecht.bsky.social · Dec 25
Seven feel-good science stories to restore your faith in 2025
Seven feel-good science stories to restore your faith in 2025
Immense progress in gene editing, drug discovery and conservation are just some of the reasons to be cheerful about 2025.
www.nature.com

Reposted by Arthur Geßler, Ben Tonra, Beatriz Gallardo Paúls , and 1 more

ec.europa.eu
European Commission @ec.europa.eu · Dec 24
We strongly condemn the U.S. decision to impose travel restrictions on five European individuals, including former Commissioner Thierry Breton.

Link to full statement: link.europa.eu/NtMX4K

arthurobuntspecht.bsky.social
Arthur Gessler @arthurobuntspecht.bsky.social · Dec 24
Trump admin imposes entry bans on German HateAid leaders (Anna-Lena von Hodenberg, Josephine Ballon) & ex-EU Commissioner Thierry Breton for alleged "censorship". Keeping basic human rights alive in the internet is now criminalised in the US. www.zeit.de/politik/ausl...
US-Außenministerium: USA sanktionieren Führung von deutscher Organisation HateAid
Die Leiterinnen einer Berliner Organisation gegen Hassrede dürfen nicht mehr in die USA einreisen. Die US-Regierung wirft ihnen Zensurversuche vor.
www.zeit.de

Reposted by Arthur Geßler, Laurent Pech

claesdevreese.bsky.social
Claes de Vreese @claesdevreese.bsky.social · Dec 24
The US ‘sanctions’ 5 individuals for involvement in #DSA, platform regulation and content moderation, including fmr Commissioner Breton and NGO leaders.

Oppressive state behavior by the US, disguised as free speech fighting. Appalling.

www.theguardian.com/technology/2...
Former EU commissioner and activists barred from US in attack on European tech regulators
State department accuses group of pressuring tech firms to censor or suppress American viewpoints through regulation of disinformation
www.theguardian.com

Reposted by Axel Bruns, Arthur Geßler, John Horgan , and 4 more

katestarbird.bsky.social
Kate Starbird @katestarbird.bsky.social · Dec 24
Nina Jankowicz: “They’re not doing this because they have any evidence of censorship — they lost a Supreme Court case that made those claims… They’re doing this because the group of researchers and advocates have stood up to liars like Donald Trump and the platforms that enable them.”

Reposted by Arthur Geßler, Steffen Mau, Cyrus Samimi , and 2 more

claudiasalowski.bsky.social
Claudia Salowski @claudiasalowski.bsky.social · Dec 24
Anna-Lena von Hodenberg und Josephine Ballon von @hateaid.org wurden von der US-Regierung mit einem Einreiseverbot belegt.

www.sueddeutsche.de/politik/usa-...
USA sanktionieren Führung der deutschen Organisation Hate Aid
Die beiden Geschäftsführerinnen Anna-Lena von Hodenberg und Josephine Ballon dürfen nicht mehr in die USA einreisen.
www.sueddeutsche.de

Reposted by Elisabet Martínez‐Sancho

arthurobuntspecht.bsky.social
Arthur Gessler @arthurobuntspecht.bsky.social · Dec 23
Our new Tansley Review reveals hydrogen isotopes in plant carbohydrates aren't just climate indicators - they're powerful tools for understanding how plants actually function and perform metabolically.

- New Phytologist
Rethinking the 2H fingerprint of carbohydrates: a novel proxy for plant metabolism and performance
The intricate architecture of plant metabolic networks and the dynamic fluxes of elements through these networks are fundamental determinants of how carbon (C) is partitioned among growth, reproducti...
nph.onlinelibrary.wiley.com

Reposted by Juli G. Pausas, Francis Martin, Arthur Geßler , and 4 more

caroaceae.bsky.social
Caroline Lehmann @caroaceae.bsky.social · Dec 23
"Bond’s work leaves behind an inconvenient lesson for an era of climate urgency: that speed is not a substitute for understanding, and that good intentions, applied without care, can erase ancient worlds as efficiently as neglect." A beautiful tribute to William Bond. Forever missed by many.
William Bond, defender of grasslands
In recent years, one of the loudest ideas in environmental policy has been that trees are the planet’s universal remedy. Plant enough of them, in enough places, and carbon will be soaked up, water wil...
www.butlernature.com

Reposted by Ingolf Kühn, Arthur Geßler, Christian Hof , and 3 more

chrisleduck.bsky.social
Christoph Grüter @chrisleduck.bsky.social · Dec 20
🚨 Tenure-track professorship at Goethe University of Frankfurt, Germany, with a focus on evolutionary ecology of social hymenoptera 🐝🐜

Initially for 6 years:
www.linkedin.com/jobs/view/pr...
Goethe University Frankfurt hiring Professur (W1 mit Tenure Track) für Evolutionäre Ökologie der Hymenopteren in Frankfurt, Hesse, Germany | LinkedIn
Posted 11:13:19 PM. Die Professur wird zunächst auf sechs Jahre befristet besetzt, nach erfolgreicher Evaluation…See this and similar jobs on LinkedIn.
www.linkedin.com

Reposted by Joanna Bryson, Katharine Hayhoe, Valerie M. Delmotte , and 22 more

science.org
Science Magazine @science.org · Dec 18
Science has named the seemingly unstoppable growth of renewable energy worldwide as the 2025 Breakthrough of the Year.

Learn more about this year's #BOTY and other big advances in science: https://scim.ag/493Tpgx
Qianjiadong Reservoir in southern Hunan, China, produces a double harvest: solar energy and yellow carp. The solar farm produces up to 80 megawatts of power while the fish forage beneath the panels. With a massive scale-up of solar and wind at home and cheap exports of the technology, China is driving a worldwide surge of renewable energy—Science’s 2025 Breakthrough of the Year.

Reposted by Arthur Geßler, Benjamin Wildermuth

enricounigoe.bsky.social
EnriCo - Uni Goettingen @enricounigoe.bsky.social · Dec 18
New!🌲💧
Water moves faster than nitrate from soil to canopy in mature trees, highlighting root, soil, and species traits.
More on subsoil uptake by Douglas fir and beech here:
onlinelibrary.wiley.com/doi/10.1111/...
@mrakklara.bsky.social @christina-hn.bsky.social
@wileyonlinelibrary.bsky.social

Reposted by Arthur Geßler, Adam H. Sobel, Wim Thiery , and 1 more

hausfath.bsky.social
Zeke Hausfather @hausfath.bsky.social · Dec 17
Threatening to dismantle NCAR, our premier weather and climate research institute (apparently) because Colorado refuses to pardon someone accused of tampering with voting machines is a sad example of our current kakistocracy in action… www.nytimes.com/2025...

Reposted by Lisa W. Fazio, Richard S.J. Tol, Dorothy Bishop , and 35 more

Reposted by Katharine Hayhoe, Elizabeth Saunders, Rebecca Solnit , and 67 more

usatoday.com
USA TODAY @usatoday.com · Dec 17
Exclusive: The Trump administration is moving to dismantle the National Center for Atmospheric Research in Colorado, according to a senior White House official, taking aim at one of the world's leading climate research labs.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
bit.ly

arthurobuntspecht.bsky.social
Arthur Gessler @arthurobuntspecht.bsky.social · Dec 9
Our new results show that soil microbial community variation directly affects P. sylvestris physiology, productivity, and responses to eCO2, and may enhance plant growth through improved nitrogen use efficiency. link.springer.com/article/10.118…
Text Shot: Our results show that soil microbial community variation directly affects P. sylvestris physiology, productivity, and responses to eCO2, and may enhance plant growth through improved nitrogen use efficiency. Surprisingly, growth with different microbial communities even more strongly impacted plant productivity than a doubling of atmospheric CO2 concentrations. The soil microbiome therefore plays a key role in supporting plant nutrition and growth under ambient and eCO2 conditions, and in turn, may confer increased forest resistance to climate change.