iiinova — where your digital self keeps evolving

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Arthur Gessler @arthurobuntspecht.bsky.social · 09/09/2026

WaldDialog – Forest Dialogue – Dialogue Forestier 2026 - Wissenschaft, Praxis und Politik treffen sich auf Augenhöhe, um zu diskutieren und Wissenslücken zu schliessen, die sich durch den Klimawandel ergeben. @swissforestlab.bsky.social @wslresearch.bsky.social www.wsl.ch/de/news/biol...

wsl.ch

Biologische Vielfalt ermöglicht nachhaltige Holzproduktion

Wie sich die klimafreundliche Ressource Holz nachhaltig produzieren lässt, diskutieren Wissenschaft, Politik und Praxis am WaldDialog 2026.

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Arthur Gessler @arthurobuntspecht.bsky.social · 28/08/2026

A great opportunity to connect perspectives across disciplines and explore the role forests and wood can play in a net-zero future.

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Arthur Gessler @arthurobuntspecht.bsky.social · 28/08/2026

Organised by SCENE, TriNational ForestLab, @swissforestlab.bsky.social NFZ.forestnet, @wslresearch.bsky.social, and @ethz.ch, the summer school brought together early-career researchers and internationally renowned experts through keynote lectures, workshops, field trips, and lively discussions.

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Arthur Gessler @arthurobuntspecht.bsky.social · 28/08/2026

How can forests help reach net zero? Which carbon sequestration services can forests and wood provide? Which policies and market designs do we need for biomass carbon sequestration?These were some of the many questions, discussed at last week’s summer school Forests for the Future at Monte Verità

Baum mit drei Menschen darunter und Blick auf den Lago Maggiore

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SwissForestLab @swissforestlab.bsky.social · 27/08/2026

WaldDialog 2026 zum Thema «Biologische Vielfalt als Schlüssel zur Förderung der Anpassung und Widerstandsfähigkeit im Wirtschaftswald». Mit Forschenden der @wslresearch.bsky.social und anderer Institutionen sowie Vortragenden aus Praxis, Politik und Verwaltung. swissforestlab.wsl.ch/de/veranstal...

swissforestlab.wsl.ch

WaldDialog – Forest Dialogue – Dialogue Forestier 2026

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Arthur Gessler @arthurobuntspecht.bsky.social · 14/07/2026

In our new paper we apply explainable AI (XAI) to model annual diameter growth of individual trees from four dominant European tree species. Potentials & limitations of XAI for forest ecology: effective for large datasets - but requires cautious interpretation. papers.ssrn.com/sol3/papers.cf…

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Arthur Gessler @arthurobuntspecht.bsky.social · 13/07/2026

Non-structural carbohydrates (NSC) serve as key metabolic substrates and carbon reserves in plants. Our new research shows the central role of evolutionary history in shaping global NSC variability - Important implications for vegetation carbon modeling. www.nature.com/articles/s41...

nature.com

Evolutionary history drives organ-specific variability in plant non-structural carbohydrates - Nature Ecology & Evolution

Compiling a global database of non-structural carbohydrates (NSCs) from >2,000 plant species, the authors show that evolutionary history explains a larger proportion of NSC variation than environme...

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Arthur Gessler @arthurobuntspecht.bsky.social · 09/07/2026

Early defoliation, leaf browning and wilting and shedding of green leaves in Switzerland (Jura) and Southern Germany (Black Forest) - beech but also cherry and maple affected - heat and drought stress - and no rain forecasted for the next weeks. This is not unexpected - this is climate change!

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Arthur Gessler @arthurobuntspecht.bsky.social · 07/07/2026

In Europe, trees are increasingly dying prematurely. A new study by @wslresearch.bsky.social on French forests now shows that it is not only drought, but also unusually warm or wet springs that increase the risk – even ideal growing conditions can prove fatal later on. www.wsl.ch/en/news/why-...

wsl.ch

Why Europe’s trees are dying

Deviations from the usual climate are causing trees to die prematurely. Even favourable growing conditions can have a negative impact.

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WSL Umweltforschung @wslresearch.bsky.social · 07/07/2026

🍁 Trees in Europe are increasingly dying prematurely. A new WSL study on French #forests now shows that it is not only extremely dry summers but #climate anomalies in general that are driving tree mortality – particularly warm and wet springs: www.wsl.ch/en/news/why-... @lsce-ipsl.bsky.social 🌍

wsl.ch

Why Europe’s trees are dying

Deviations from the usual climate are causing trees to die prematurely. Even favourable growing conditions can have a negative impact.

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WSL Umweltforschung @wslresearch.bsky.social · 07/07/2026

En Europe, les arbres meurent de plus en plus prématurément. Une nouvelle étude sur les forêts françaises démontre qu'en plus des étés extrêmement secs, les anomalies climatiques favorisent aussi la mortalité des arbres – en particulier les printemps chauds et humides. www.wsl.ch/fr/news/pour...

wsl.ch

Pourquoi les arbres d’Europe meurent

Les anomalies climatiques mènent à la mort prématurée des arbres. Même des conditions favorables peuvent avoir à terme des effets négatifs.

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WSL Umweltforschung @wslresearch.bsky.social · 07/07/2026

In Europa sterben Bäume zunehmend verfrüht ab. Eine neue Studie der WSL über französische #Wälder zeigt nun: Nicht nur extrem trockene Sommer, sondern allgemein klimatische Abweichungen treiben das #Baumsterben an – insbesondere warme und feuchte Frühlinge. www.wsl.ch/de/news/waru...

wsl.ch

Warum Europas Bäume sterben

Abweichungen vom üblichen Klima bewirken, dass Bäume verfrüht absterben. Selbst günstige Wachstumsbedingungen können sich negativ auswirken.

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Pascal Schneider @pascal-schneider.bsky.social · 29/06/2026

🌦️🌳 Why are more trees dying in European forests? Extreme summer droughts are definitely part of the story, but our new paper shows that tree mortality is shaped by climate variability across seasons, not by single extreme events alone. www.nature.com/articles/s41...

nature.com

Rising tree mortality in France is associated with distinct seasonal climate anomalies - Nature Communications

This study explores climate-driven tree mortality risk beyond summer drought. It links rising tree mortality in France to distinct seasonal climate anomalies, including winter and spring warming, diff...

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Pascal Schneider @pascal-schneider.bsky.social · 29/06/2026

🔎 We analysed >500,000 trees from the French National Forest Inventory (2015-2023), covering 52 species and a wide range of climates. Using ensemble modelling and explainable machine learning, we looked for the strongest signals behind mortality risk.

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Pascal Schneider @pascal-schneider.bsky.social · 29/06/2026

📈 The main drivers were tree size, competition, and seasonal climate anomalies. Warmer winters and springs, warmer summers, drought patterns, and recovery conditions all mattered differently depending on species and context.

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Pascal Schneider @pascal-schneider.bsky.social · 29/06/2026

🌱 One surprising result: “good” spring conditions can sometimes backfire. Warm, wet springs may promote rapid canopy growth, increasing water demand and making some trees more vulnerable if drought arrives later.

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Pascal Schneider @pascal-schneider.bsky.social · 29/06/2026

🌲 This matters for how we monitor and manage forests. If mortality is driven by climate sequences, not just one dry summer, we need to think about species choice, stand density, and recovery conditions across the whole year.

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Pascal Schneider @pascal-schneider.bsky.social · 29/06/2026

🙏 For me, this paper is a real milestone. I’m proud to see it published and grateful to all collaborators who made it possible: Agnès Pellissier-Tanon, Chuanlong Zhou, @ciais-philippe.bsky.social, Christian Piedallu, @albavianasoto.bsky.social, and @arthurobuntspecht.bsky.social!

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Arthur Gessler @arthurobuntspecht.bsky.social · 26/06/2026

We hypothesise that this reflects the influence of structural overshoot, whereby wet spring conditions promote rapid canopy growth that may increase vulnerability to subsequent drought.

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Arthur Gessler @arthurobuntspecht.bsky.social · 26/06/2026

First PhD paper from @pascal-schneider.bsky.social; we were surprised that anomalously wet springs also frequently emerge as strong predictors of elevated mortality risk, particularly in tall temperate tree species.

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Arthur Gessler @arthurobuntspecht.bsky.social · 26/06/2026

🌳 Tree mortality in 🇫🇷 France rose 1.5–4× (2015–2023). 500k+ trees analysed; warmer winters & springs are top drivers. Even wet springs increase mortality risk via 'structural overshoot'. Seasonal climate combos matter more than single extremes. #forests #climatechange www.nature.com/articles/s41...

4 Maps of France showing forest cover, changes in temperature and precipitation, and tree mortality rate in different regions. 9 line graphs show the temporal mortality trends for main tree species

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Arthur Gessler @arthurobuntspecht.bsky.social · 11/05/2026

New analysis of #forest monitoring results highlights that future forest management must shift from optimising for maximum productivity towards fostering structural and functional #resilience. @funecology.bsky.social @swissforestlab.bsky.social besjournals.onlinelibrary.wiley.com/doi/10.1111/...

besjournals.onlinelibrary.wiley.com

Decreasing water availability reduces productivity in Swiss forests along an altitudinal gradient

Read the free Plain Language Summary for this article on the Journal blog.

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Global Dendrometer Network @globaldendro.bsky.social · 24/04/2026

Hello world! This is the Global Dendrometer Network 🌍. We have been founded by the growing community of researchers and practitioners working with high-resolution tree diameter measurements: from microscopic movements to forest-scale insights. 🌳 Join our mailing list here: forms.gle/ETPuNVCH7x89...

forms.gle

Global Dendrometer Network Mailing List

Please fill out this form if you wish to be added to a mailing list regarding the Global Dendrometer Network. By signing up, this does not commit you to anything other than receiving updates about fut...

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Arthur Gessler @arthurobuntspecht.bsky.social · 26/03/2026

New preprint synthesising 103 studies on tree species identification from aerial imagery identifies core gaps. Highlights need for cross-biome standardised curation, multimodal fusion, automated workflows, and advanced model architectures for scalable species mapping. eartharxiv.org/repository/v...

eartharxiv.org

Advances in tree species identification from high-resolution aerial imagery and deep learning

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Arthur Gessler @arthurobuntspecht.bsky.social · 05/03/2026

Our new research shows that megadroughts negatively impact #forest #resilience. Managed forests had lower resilience than undisturbed forests, especially in boreal regions. This underscores the importance of mitigating human pressure for maintaining forest resilience. www.nature.com/articles/s41...

nature.com

Human pressure and biodiversity modify forest resilience after extreme multi-year droughts - Nature Ecology & Evolution

This study reported widespread declines in resilience after multi-year droughts and showed that biodiversity and climate strongly shape forest resilience after multi-year droughts, but human footprint...

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Liangzhi Chen @liangzhi-chen.bsky.social · 05/03/2026

Paper out!🌳🐾Vital role of human footprint in altering forest resilience after disturbances. Forest resilience anomalies after extreme droughts relate to species richness positively or negatively, but when human pressure is included, its interaction with species richness diminishes forest resilience.

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Arthur Gessler @arthurobuntspecht.bsky.social · 05/03/2026

Summer School "Forests for the Future: Strategies for Carbon Sequestration" 16–21 August 2026; Congressi Stefano Franscini at Monte Verità, Ascona, Switzerland Deadline: 30 April 2026 Applications can be submitted to: swissforestlab_summerschool@wsl.ch swissforestlab.wsl.ch/en/veranstal...

swissforestlab.wsl.ch

Summer School - Forests for the Future

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Arthur Gessler @arthurobuntspecht.bsky.social · 10/10/2025

This makes science not really credible. I see nevertheless that approaches such as the ones of Zhu et al are important - as micro- and nanoplastics are likely a global threat. But we - the scientists- need to put our results into a realistic context - this is our core responsibility.

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Arthur Gessler @arthurobuntspecht.bsky.social · 10/10/2025

This paper is a perfect example how trying to get newspapers-citable into the focus of a paper invalidates the really important findings (microplastics can reduce photosynthesis but we do not know how this might scale to our ecosystems - just because we have no data at all.

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Arthur Gessler @arthurobuntspecht.bsky.social · 10/10/2025

Just imagine you go with machine learning from scarce lab data with almost no information on plastic pollution under real world conditions to crop and fishery yield losses as a result of that given pollution. I acknowledge that this is a first step - but you need to name the shortcomings.

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Arthur Gessler @arthurobuntspecht.bsky.social · 10/10/2025

They (1) extrapolate plastic impact measurements on photosynthesis under controlled and highly artificial conditions to the real world (2) without valid data on global plastic pollution and (3) without any baseline for their model.

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Arthur Gessler @arthurobuntspecht.bsky.social · 10/10/2025

We still feel that this later statement in their response letter is not congruent with the alarming statements in the original text: „These findings underscore the urgency of integrating plastic mitigation into global hunger and sustainability initiatives“ which seem to be targeted to press coverage

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Arthur Gessler @arthurobuntspecht.bsky.social · 10/10/2025

In their response (www.pnas.org/doi/10.1073/...) some authors of the original paper state that „[they] believe it is scientifically sound and responsible to use currently available—albeit limited evidence—for preliminary assessments and to stimulate broader scientific and policy dialog“

pnas.org

PNAS

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

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Arthur Gessler @arthurobuntspecht.bsky.social · 10/10/2025

This is our critical assessment of www.pnas.org/doi/10.1073/... These authors claimed that they can calculate quite exact MP-induced real world global photosynthesis losses translating in a reduction of 22.15 to 115.73 MT·y−1 in main crop production and 0.32 to 7.39 MT·y−1 in seafood production.

pnas.org

A global estimate of multiecosystem photosynthesis losses under microplastic pollution | PNAS

Understanding how ecosystems respond to ubiquitous microplastic (MP) pollution is crucial for ensuring global food security. Here, we conduct a mul...

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SwissForestLab @swissforestlab.bsky.social · 30/04/2025

Integrate Workshop - Increasing biodiversity to promote adaptation and resilience of European forests by using close-to-nature forestry 📅 June 02-04, 2025 📍 ETH Hönggerberg, Zurich 💰 CHF 200 Register here: lnkd.in/eBV4997C More info: lnkd.in/e7nQZgm8

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Arthur Gessler @arthurobuntspecht.bsky.social · 18/04/2025

Our new work tells a detailed story of aboveground rain absorption in trees and lays a foundation for future trait-based research into among-species differences in absorption capacity. academic.oup.com/jxb/advance-...

academic.oup.com

Rainwater uptake in conifer twigs: Five experiments tell a story of absorption, storage, and transport

Abstract. While evidence supports the idea that a portion of the many raindrops that fall onto a forest canopy may be directly absorbed by the twigs they l

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Arthur Gessler @arthurobuntspecht.bsky.social · 02/04/2025

@wslresearch.bsky.social , @ethzurich.bsky.social, @inrae-france.bsky.social , @www.helmholtz.de, @dfg.de , @snsf-ch.bsky.social, @maxplanck.de and others - let's organize a science-directed #diamondopenaccess system instead of funding the obscene profits of commercial publishers! Go Diamond!

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Arthur Gessler @arthurobuntspecht.bsky.social · 02/04/2025

No-deal with #Wiley. The publisher has blocked access to 2025 journal issues to #SwissUniversities, and researchers in Switzerland can no longer publish Open Access within the read & publish agreement. Hey, #Wiley, researchers provide the content, and we review and edit for free.

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WSL Umweltforschung @wslresearch.bsky.social · 18/03/2025

WSL-Direktor Rolf Holderegger bei der Präsentation des #Waldbericht2025 vor Medienschaffenden im Galmwald, Kanton Freiburg. Mehr zu den Inhalten in Kürze! Rolf Holderegger, directeur du WSL, présente le #Rapportforestier2025 aux médias dans la forêt domaniale du Galm, canton de Fribourg. À suivre !

Eine Gruppe Personen sitzt an zwei Holztischen im Wald. Mehrere Personen stehen. Sie alle hören WSL-Direktor Rolf Holderegger zu, der eine Rede hält.

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Arthur Gessler @arthurobuntspecht.bsky.social · 18/03/2025

Swiss Forest Report 2025 by @wslresearch.bsky.social and #BAFU provides an overview of the condition and development of Swiss forests over the past ten years. It assesses the outlook for all relevant areas against the backdrop of advancing climate change. www.bafu.admin.ch/bafu/en/home...

bafu.admin.ch

Forest Report 2025

Development, Condition and Use of Swiss Forests. 2025

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Arthur Gessler @arthurobuntspecht.bsky.social · 18/03/2025

Der Schweizer Waldbericht 2025 von @wslresearch.bsky.social und #BAFU zeigt den Zustand und die Entwicklungen des Schweizer Waldes in den letzten zehn Jahren. Er gibt einen Ausblick für alle Themenbereiche im Hinblick auf den fortschreitenden Klimawandel: www.bafu.admin.ch/bafu/de/home...

bafu.admin.ch

Waldbericht 2025

Entwicklung, Zustand und Nutzung des Schweizer Waldes. 2025

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Arthur Gessler @arthurobuntspecht.bsky.social · 28/02/2025

30 Jahre Langfristige Waldökosystemforschung #LWF an der @wslresearch.bsky.social: Zusammenfassung der wichtigsten Ergebnisse zum Zustand des Schweizer Waldes in der #SZF: www.szf-jfs.ch/de/archiv/02...

szf-jfs.ch

Archiv

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