Arthur Geßler | Lightnews

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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Agriculture 15%

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Arthur Gessler @arthurobuntspecht.bsky.social · 1d

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

Arthur Gessler @arthurobuntspecht.bsky.social · 2d

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

Claes de Vreese @claesdevreese.bsky.social · 2d

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 Axel Bruns, Arthur Geßler, John Horgan, Rosemary A. Joyce, Laurent Pech, Robert C. Richards, Ryan Calo

Kate Starbird @katestarbird.bsky.social · 2d

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.”

Craig Aaron @notaaroncraig.bsky.social · 2d

“Chilling and unconstitutional” — @attorneynora.bsky.social @freepress.bsky.social

U.S. Bars 5 European Tech Regulators and Researchers

www.nytimes.com

Reposted by Arthur Geßler, Steffen Mau, Cyrus Samimi , and 1 more Arthur Geßler, Steffen Mau, Cyrus Samimi, Nils Zurawski

Claudia Salowski @claudiasalowski.bsky.social · 2d

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

Arthur Gessler @arthurobuntspecht.bsky.social · 3d

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 Juli G. Pausas, Francis Martin, Arthur Geßler, Patrick A. Jansen, Sami W. Rifai, Markus P. Eichhorn, Jonas Trepel

Caroline Lehmann @caroaceae.bsky.social · 3d

"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 Ingolf Kühn, Arthur Geßler, Christian Hof, Valeria Mazza, Samuele Ramellini, Benjamin Wildermuth

Christoph Grüter @chrisleduck.bsky.social · 5d

🚨 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 Joanna Bryson, Katharine Hayhoe, Valerie M. Delmotte, Sonia I. Seneviratne, Helmut Haberl, Klaus E. Meyer, Garry Peterson, Arthur Geßler, Ben Bond‐Lamberty, John Fasullo, Nancy Knowlton, Jonathan A. Foley, Steve Peers, Harvey J. Miller, Richard Waite, Éva E. Plagányi, Gernot Wagner, Sabine Pahl, Dominik Wiedenhofer, Randall A. Kramer, Andréas Nilsson, Leah Stokes, Georg Weizsäcker, Olúfẹ́mi Táíwò, Sheila R. Foster

Science Magazine @science.org · 7d

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

EnriCo - Uni Goettingen @enricounigoe.bsky.social · 8d

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 Arthur Geßler, Adam H. Sobel, Wim Thiery, Rosie A. Fisher

Zeke Hausfather @hausfath.bsky.social · 8d

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 Lisa W. Fazio, Richard S.J. Tol, Dorothy Bishop, Colin F. Camerer, Arthur Geßler, Gavin A. Schmidt, Joshua S. Weitz, Scott L. Greer, Steve Peers, Simon Chapman, Caroline Krafft, Philip N. Cohen, Rita Rubin, Lesley A. Hall, Efrén O. Pérez, David W. Kerstetter, Kevin Carey, Raffaella Ravinetto, Devon Greyson, Smith, Karen Benjamin Guzzo, Janet Murray, Alan Richardson, Patrick S. Forscher, Ben Tonra, Julia Lynch, Caroline Fohlin, Sebastian Karcher, David C. Kimball, Lisa Diedrich, Catherine J. Frieman, Christina Ho, Larry W. Hunter, Richard M. Carpiano, Julie Rovner, Nicole Guenther Discenza, Dana Howard, Clark Gray

Reposted by Katharine Hayhoe, Elizabeth Saunders, Rebecca Solnit , and 67 more Katharine Hayhoe, Elizabeth Saunders, Rebecca Solnit, Richard S.J. Tol, Sonia I. Seneviratne, Scott C. Doney, Brian J. Enquist, Joel A. Thornton, Kimberly A. Prather, Simon L. Lewis, David M. Schultz, Brigitte Nerlich, Will Jennings, Peter Thorne, Brendan Nyhan, Timon McPhearson, Arthur Geßler, Ben Bond‐Lamberty, Wim Thiery, Elizabeth A. Barnes, Ed Hawkins, Mathias Disney, Kevin J. Anchukaitis, Baylor Fox‐Kemper, Julie L. Lockwood, Patrick A. Jansen, Rosie A. Fisher, Flavio Lehner, Jonathan A. Foley, Joshua S. Weitz, Scott L. Greer, Steve Peers, Alan de Brauw, David Johnson, Rosemary A. Joyce, Michael J. Allen, Fabián Muniesa, Gernot Wagner, Adam Gamoran, Daniel W. Drezner, Smith, Karen Benjamin Guzzo, Robert Wolfe, Holger Hestermeyer, Dominique Meurs, Stacy D. VanDeveer, Bessma Momani, Suzanne de Cheveigné, Michael D. McDonald, Erol Akçay, David Murakami Wood, Kate Starbird, Jennifer A. Johnson, Mathias Frisch, Alessandro Rigolon, Leah Stokes, Larry W. Hunter, Jack Stilgoe, Richard M. Carpiano, Nathan Richardson, Xavier Molénat, Kate Jackson, Carlos Carroll, Jeannette Sutton, Clark Gray, Annalee Newitz, David Darmofal, Peter Jacobs, Jesse R. Lasky, Anne Hilborn

USA TODAY @usatoday.com · 9d

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

Arthur Gessler @arthurobuntspecht.bsky.social · 16d

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.

Reposted by Stephen M. Walt, Brendan Nyhan, Arthur Geßler , and 2 more Stephen M. Walt, Brendan Nyhan, Arthur Geßler, Trevor A. Branch, Richard M. Carpiano

The American Academy of Pediatrics @ameracadpeds.bsky.social · 20d

“This irresponsible and purposely misleading guidance will lead to more hepatitis B infections in infants and children.” Read our full statement by AAP President Dr. Susan J. Kressly:
www.aap.org/en/news-room...

Reposted by Arthur Geßler

Philipp Schuler @philippschuler.bsky.social · 21d

In our recent study, we demonstrate how high temperatures alter leaf-level C dynamics, resulting in a significant shift towards sugars as the primary C reserve, and concurrent shifts in 2H and 18O composition

@lehmannlab.bsky.social @arthurobuntspecht.bsky.social
@wslresearch.bsky.social

Hot and Hungry - High temperatures induce changes in leaf carbon dynamics and sugar isotope fingerprints

npj Science of Plants - Hot and Hungry - High temperatures induce changes in leaf carbon dynamics and sugar isotope fingerprints

rdcu.be

Arthur Gessler @arthurobuntspecht.bsky.social · 21d

Congrats, Katrin, well deserved! www.wsl.ch/de/news/wsl-...

WSL-Bodenforscherin zur Professorin an der ETH ernannt

Katrin Meusburger erforscht, wie Böden Wasser speichern und weitergeben. Der ETH-Rat hat sie nun zur Titularprofessorin ernannt.

www.wsl.ch

Reposted by Ben Bond‐Lamberty, Martin Ehbrecht, Darío Martin‐Benito , and 1 more Ben Bond‐Lamberty, Martin Ehbrecht, Darío Martin‐Benito, Kali Middleby

Arthur Gessler @arthurobuntspecht.bsky.social · 21d

We found that when temps hit 30°C+, C3 plants start struggling - their carbon metabolism gets disrupted, they burn through sugar stores faster, and even their isotope signatures change.
Meanwhile C4 plants? They're basically chilling like "this is fine" 😎

www.nature.com/articles/s44...

Hot and Hungry - High temperatures induce changes in leaf carbon dynamics and sugar isotope fingerprints - npj Science of Plants

npj Science of Plants - Hot and Hungry - High temperatures induce changes in leaf carbon dynamics and sugar isotope fingerprints

www.nature.com

Reposted by Arthur Geßler

Ákos T Kovács @evolvedbiofilm.bsky.social · 22d

Nutrient limitation shapes functional traits of mycorrhizal fungi and phosphorus-cycling bacteria across an elevation gradient

#mSystems by @hannahshulman.bsky.social et al

journals.asm.org/doi/10.1128/...

Nutrient limitation shapes functional traits of mycorrhizal fungi and phosphorus-cycling bacteria across an elevation gradient | mSystems

Phosphorus (P) limits plant productivity in high-elevation ecosystems, yet the microbial networks that mobilize P, including arbuscular mycorrhizal (AM) fungi and phosphorus-cycling bacteria (PCBs), remain under-characterized in these nutrient-poor soils. We show that across a 10,00-m elevation gradient, AM fungi and P-cycling gene assemblages shift predictably with pH, organic carbon, and phosphate availability. Higher elevations, with less available P, select for stress-tolerant AM fungal taxa and PCB strategies geared toward mineral solubilization, while low-elevation sites favor root colonization by AM fungi and organic P mineralization. These results suggest that nutrient limitation can constrain microbial community assembly in consistent ways across landscapes. High mountain soils are low in P and rely on a network of underground AM fungi and PCB to deliver nutrients to plants. This study shows how those underground relationships reorganize with elevation and how climate change could collapse long-standing microbial strategies by pushing high-elevation ecosystems toward lowland conditions. As soils warm and dry, the microbial scaffolding that supports alpine plant life may become increasingly unstable.

journals.asm.org

Reposted by Arthur Geßler

Robert Hoffie @forscherrobert.bsky.social · 24d

Ganz unabhängig davon, wie man zu den Neuen Genomischen Techniken (NGTs) steht, gibt es natürlich einfach grundlegende Fakten, die man nicht einfach ingnorieren kann.
Leider stellt Frau Krenkel in dem Interview einige Falschbehauptungen auf:
1/

Reposted by Arthur Geßler

taz @taz.de · 24d

Pola Krenkel sorgt sich, wie sie weiterhin Nahrungsmittel ohne Gentechnik anbieten kann. Denn die EU erwägt, die Kennzeichnungspflicht zu lockern.

Biobäuerin über Regeln für „Genfood“: „Meine Lebensmittel sollen gentechnikfrei bleiben“

Pola Krenkel sorgt sich, wie sie weiterhin Nahrungsmittel ohne Gentechnik anbieten kann. Denn die EU erwägt, die Kennzeichnungspflicht zu lockern.

taz.de

Arthur Gessler @arthurobuntspecht.bsky.social · 26d

Tremendous freshwater loss - but COP 30 was still in the „Don‘t look up“-mode: Europe’s water reserves drying up due to climate breakdown

Revealed: Europe’s water reserves drying up due to climate breakdown

Exclusive: UCL scientists find large swathes of southern Europe are drying up, with ‘far-reaching’ implications

www.theguardian.com

Reposted by Arthur Geßler, Jussi T. Eronen

WATERSHED Investigations @watershed-i.bsky.social · 27d

Water reserves drying up in face of climate change.

Our latest article, out now:

share.google/0eyMBdzbmWkA...
🧵
1/6

Revealed: Europe’s water reserves drying up due to climate breakdown

Exclusive: UCL scientists find large swathes of southern Europe are drying up, with ‘far-reaching’ implications

share.google

Reposted by Brian J. Enquist, Arthur Geßler, Juan Cole , and 1 more Brian J. Enquist, Arthur Geßler, Juan Cole, Stacy D. VanDeveer

Michael E. Mann @michaelemann.bsky.social · Nov 18

"Bill Gates' climate comments are a distraction" | My new commentary for @nature.com: www.nature.com/articles/d41...

Reposted by Arthur Geßler

Journal of Experimental Botany @jxbotany.bsky.social · Nov 18

🌳 RESEARCH 🌳

Exposing alder & oak to differing blue-to-red light ratios reveals species-specific responses in conductance & photosynthetic mechanisms, showing that water-use efficiency reductions occur via different physiological pathways - Diao et al.

🔗 doi.org/10.1093/jxb/...
#PlantScience 🧪

$Fig. 8.Biochemical, mesophyll, and stomatal limitations on the photosynthetic response to increasing blue-light fraction for grey alder and holm oak. The biochemical (dAbiochem), mesophyll (dAmeso), and stomatal (dAstom) limitations were calculated according to Equation 9. (A) Grey alder. (B) Holm oak. At each %B level, dAbiochem, dAmeso, and dAstom were further normalized by multiplying them by dAn/dAcalc, where dAn is the difference between the maximum and current An. (C) The integrated relative limitations by Vcmax (maximum carboxylation rate of Rubisco; σbiochem), gm13 (total mesophyll conductance; σmeso), and gsc (stomatal conductance to CO2; σstom) across the different %B levels. All data are means (±SD), n=5 biological replicates.$

Arthur Gessler @arthurobuntspecht.bsky.social · Nov 17

New paper out! 🌲 We explore hyperspectral indicators of vegetation vitality across scales—from individual trees to entire forests using drone & aircraft data. Insights into tree health, water availability & structure.

www.sciencedirect.com/science/arti...