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Reposted by Dr. Dirk N. Karger

Arthur Gessler @arthurobuntspecht.bsky.social · 8d

New research reveals how to better monitor tree #drought #stress! We combined remote sensing data (greenness & photoprotection indicators) with leaf water potential measurements to track drought impacts across different tree species.
www.sciencedirect.com/science/arti...

Deciphering tree drought responses across species: linking leaf water potentials with remote sensing greenness and photoprotection dynamics

Monitoring forest drought stress requires indicators that capture tree water relations across species and scales. Remote sensing enables large-scale a…

www.sciencedirect.com

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Reposted by Dr. Dirk N. Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · Jul 10

@clechartre.bsky.social reimplemented #BIOME4 into a modular, high-performance #Julia version, enabling 1 km vegetation modeling 🌱 and integration of #CHELSA climate datasets. 🌦️ We can now simulate biome patterns across complex terrains ⛰️ and define biome boundaries with greater accuracy. 🎯

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Reposted by Dr. Dirk N. Karger

Juliano Sarmento Cabral @jsarmentocabral.bsky.social · Jul 10

Hiring/Seeking a *permanent* programmer in ecological modelling at my lab @unibonn.bsky.social. We mechanistically model plant communities, island biogeography, species range dynamics, eco-evolutionary feedbacks, diversity gradients, tropical forests, vascular epiphytes. Pls rt! shorturl.at/Bzzdt

Programmer in Ecological Modelling

Full-time, permanent, EG 10, Reference number: 2025/72

shorturl.at

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Dr. Dirk N. Karger @dirknkarger.bsky.social · Jul 8

🌿 Join Our Team as Postdoctoral Researcher in Regional Climate Downscaling at the Swiss Federal Research Institute WSL in Switzerland and lead the development of regional, highresolution climate scenarios for Armenia. @wslresearch.bsky.social @wsl-dme.bsky.social apply.refline.ch/273855/1747/...

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Reposted by Dr. Dirk N. Karger

Biodiversa+ (European Biodiversity Partnership) @biodiversa.eu · Jun 10

📢 BiodivClim Comics are here!
To mark the end of the BiodivClim programme, we've teamed up with @tnoc.bsky.social‬ to turn science into stories. Explore:
🌊 Tides of Change
🌾 The Wheat Code
🌲 The Forest of Forgotten Futures

📖 www.biodiversa.eu/2025/06/09/b...

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Dr. Dirk N. Karger @dirknkarger.bsky.social · Jun 5

Old news in new clothes www.science.org/doi/10.1126/... 😂

Global increase in the occurrence and impact of multiyear droughts

Persistent multiyear drought (MYD) events pose a growing threat to nature and humans in a changing climate. We identified and inventoried global MYDs by detecting spatiotemporally contiguous climatic ...

www.science.org

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Reposted by Dr. Dirk N. Karger

Liangzhi Chen @liangzhi-chen.bsky.social · Jun 5

Go check out our event-based evaluation!
Beyond the global scale patterns of increasing multi-year droughts, there are over 10,000 identified events inventoried with explicit spatiotemporal coverage, from which one could easily extract events of their whatever interest across disciplines and uses.

Dr. Dirk N. Karger @dirknkarger.bsky.social · Jun 5

Earlier this year, Chen et al. @science.org showed that droughts are intensifying globally, with warming. www.science.org/doi/full/10.1126/science.ado4245,
Now, Gebrechorkos et al. @nature.com confirms the same findings. Very important work, but not wholly novel doi.org/10.1038/s415...

Warming accelerates global drought severity - Nature

Increased atmospheric evaporative demand in recent years has increased drought severity by an average of 40% globally across both dry and wet regions, and the trend is likely to continue under future ...

doi.org

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Dr. Dirk N. Karger @dirknkarger.bsky.social · Jun 5

@natureportfolio.nature.com, @wsl-dme.bsky.social

Reposted by Dr. Dirk N. Karger

WSL Umweltforschung @wslresearch.bsky.social · Jun 5

🌳🐝 #Sciencejob Alert! 🪲🌻Auf der Suche nach einem Job in der Schnittstelle zwischen #Forschung und Praxis? Das Synthesezentrum Biodiversität der #WSL sucht per 1. Juli 25 eine #wissenschaftlicheAssistenz #Biodiversität und #Naturschutzbiologie: apply.refline.ch/273855/1739/...

Stellenanzeige: Wissenschaftliche Assistenz am Synthesezentrum Biodiversität 60-80% (w/m/d)
Das Synthesezentrum Biodiversität ist eine vom ETH-Rat finanzierte Initiative der WSL, Eawag und ETH Zürich. Ziel des Zentrums ist es, Fachpersonen aus dem Naturschutz – Behörden, Umweltberatungsfirmen oder NGOs – praxisrelevantes Wissen zu Biodiversitätsthemen zugänglich aufzubereiten. Dafür leiten wir Arbeitsgruppen, die aus Fachpersonen aus Wissenschaft und Praxis bestehen. Diese erarbeiten zu diversen Themen konkrete Syntheseprodukte oder Handlungsempfehlungen.

Die Stelle umfasst sowohl administrative Aufgaben, wie die Unterstützung im Reporting und in der Koordination mit Projektpartner/-innen, als auch die Mitarbeit in den Arbeitsgruppen. Dazu zählen die Unterstützung in der Organisation, Vorbereitung und Nachbereitung von Workshops sowie die Aufbereitung relevanter Informationen und Materialien. Zusätzlich sind eigenständige Projekte vorgesehen, etwa die Erarbeitung einer Stakeholder-Landkarte im Bereich Biodiversität in der Schweiz oder ein Argumentarium zu aktuellen biodiversitätsbezogenen Fragestellungen. Der Arbeitsort wird abwechslungsweise an der WSL in Birmensdorf, der Eawag in Dübendorf und der ETH in Zürich sein.
Sie verfügen über ein abgeschlossenes Bachelor- oder Masterstudium in den Natur-, Umwelt- oder Sozialwissenschaften, in Geografie oder in nachhaltiger Entwicklung und bringen ein starkes Interesse an Biodiversitätsthemen mit. Idealerweise besitzen Sie Vorkenntnisse in diesem Bereich sowie erste Erfahrungen im Stakeholder-Engagement. Sie sind ein Organisationstalent und zeichnen sich durch eine selbstständige, flexible und präzise Arbeitsweise aus. Ausser-dem verfügen Sie über sehr gute mündliche und schriftliche Kenntnisse in Deutsch und Englisch; Kenntnisse in einer weiteren Landessprache sind von Vorteil.

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Dr. Dirk N. Karger @dirknkarger.bsky.social · Jun 5

However, the framing in Gebrechorkos et al. presents this as new, but conclusions are nearly identical. Is this a problem? Maybe yes, maybe no? But given that @nature.com always claims novelty, this should be at least discussed.

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Dr. Dirk N. Karger @dirknkarger.bsky.social · Jun 5

Both Chen et al. (Science, 01.2025) and Gebrechorkos et al. (Nature, 06.2025) report similar trends, e.g. that droughts are intensifying globally, driven by warming, and affecting larger areas.

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Dr. Dirk N. Karger @dirknkarger.bsky.social · Jun 5

Supprisingly, no citation of Chen et al. 2025. While this might be a simple oversight, but when conclusions and methods overlap this much in an @nature.com article, such silence risks misleading readers about what’s truly novel.

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Dr. Dirk N. Karger @dirknkarger.bsky.social · Jun 5

Earlier this year, Chen et al. @science.org showed that droughts are intensifying globally, with warming. www.science.org/doi/full/10.1126/science.ado4245,
Now, Gebrechorkos et al. @nature.com confirms the same findings. Very important work, but not wholly novel doi.org/10.1038/s415...

Warming accelerates global drought severity - Nature

Increased atmospheric evaporative demand in recent years has increased drought severity by an average of 40% globally across both dry and wet regions, and the trend is likely to continue under future ...

doi.org

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Reposted by Dr. Dirk N. Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · Jun 3

🌿 What makes plants in tropical ecosystems so unique & remarkably adapted to their environment? 🌸✨
We explored this question during a visit to the Botanical Garden in Zurich, guided by our group member dirknkarger.bsky.social‬ — a fantastic opportunity to observe tropical plant traits up close. 🔎🌱

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Reposted by Dr. Dirk N. Karger

Fabricio Villalobos @fabrovillalobos.bsky.social · May 27

Massive work by my friend and colleague @gabrielmoulatlet.bsky.social showing that most Amazonian species (vertebrates and plants) are exposed to metal contamination from mining activities

from Gabriel's postdoc w/ @bjenquist.bsky.social

#BiogeographyOfRisk
#Macroecology

Gabriel M. Moulatlet @gabrielmoulatlet.bsky.social · May 27

Metal derived from mining are causing widespread effects in the biodiversity. Check our new preprint on the species exposure to metal in the Amazon. More than 65% of all species are exposed to metal contamination, even in remote area.
www.biorxiv.org/content/10.1...

@fabrovillalobos.bsky.social

Amazon biodiversity is at risk from metal contamination due to mining activity

The Amazon basin hosts the most biodiverse and intact ecosystems on Earth, yet human activities are an increasing threat. Metal contamination due to mining constitutes one of these major threats, but ...

www.biorxiv.org

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Reposted by Dr. Dirk N. Karger

Niklaus E. Zimmermann @nezimmermann.bsky.social · May 14

🍁🌷🌼Interessiert an Tipps zur KI-basierten Pflanzenbestimmung mit FlorApp/FlorID der neuen Bestimmungstool für die #Flora der #Schweiz?🥀🌳

👉Dann melde dich an am "Festival der Natur"!

shorturl.at/1fEEv
festivaldernatur.ch

#Natur #Biodiversität #FestivalderNatur #PflanzenBestimmen

Sicher bestimmen im Feld – mit KI zur Zweitmeinung

Schwierig zu bestimmende Pflanzen? Da hilft ein unabhängiger Blick. Das neue Tool FlorID der WSL bietet genau das: eine verlässliche Zweitmeinung – direkt im Feld. FlorID nutzt KI der neuesten Genera...

shorturl.at

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Reposted by Dr. Dirk N. Karger

Wim Thiery @wimthiery.bsky.social · May 12

Will you live an unprecedented life?

In our new paper in @nature.com and accompanying @savethechildren.org report, we detect who will face unprecedented lifetime exposure to climate extremes (🧵) 1/n
Report: resourcecentre.savethechildren.net/document/bor...
Paper: www.nature.com/articles/s41...

Born into the Climate Crisis 2. An unprecedented life: Protecting children’s rights in a changing climate | Save the Children’s Resource Centre

The climate crisis is not a distant threat; it is a pressing reality that children are facing today. Despite having contributed the least to the climate crisis, the inherent intergenerational injustic...

resourcecentre.savethechildren.net

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Reposted by Dr. Dirk N. Karger

Massimiliano Zappa (it’s fun again) @hydrologywsl.bsky.social · May 8

Die Geschichte dazu hier:

Zappa, M., Karger, D. N., & Hüsler, F. (2025). EXtreme Trockenheit in der Schweiz: Regionale und lokale Perspektiven einer globalen Herausforderung. In A. Björnsen (Ed.), WSL Berichte: Vol. 164. Extremes (pp. 13-21). doi.org/10.55419/wsl...

EXtreme Trockenheit in der Schweiz: Regionale und lokale Perspektiven einer globalen Herausforderung | DORA WSL

doi.org

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Reposted by Dr. Dirk N. Karger

Massimiliano Zappa (it’s fun again) @hydrologywsl.bsky.social · May 8

8. Mai 2025 11:00

drought.ch ist nun vollständig umgesetzt.

2010: Beginn der Forschungsarbeiten
2013: Forschungsplattform geht Online
Mai 2022: Der Bund will vor #Trockenheit warnen
Mai 2025: Der Bund warnt vor Trockenheit

auf drought.ch werdet ihr nun auf die Seite des Bundes umgeleitet.

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Reposted by Dr. Dirk N. Karger

Michael Nobis @michaelnobis.bsky.social · May 7

🔉Version 2.0 of our #KISSMig #Rstats package for #SpeciesMigration modeling is now live on #CRAN. 🎉 Together with Dominik Landolt we boosted performance by implementing parallel computing—making this simple dynamic #SDM faster than ever. Learn more about KISSMig here 👉 purl.oclc.org/wsl/kissmig

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Reposted by Dr. Dirk N. Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · May 2

Mountain species are at risk of extinction as global temperatures rise—but how these risks will manifest remains unclear. 🌱🏔️ Bert Wuyts's research sheds light on this by exploring how habitats become fragmented & isolated as populations shift to higher elevations. He presented his results at #EGU25.

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Reposted by Dr. Dirk N. Karger

Dr. Dirk N. Karger @dirknkarger.bsky.social · Apr 16

At WSL @wslresearch.bsky.social we are hiring a "Postdoc in Regional Climate Downscaling" for a forest/climate project in Armenia funded by the Swiss Development Cooperation (DEZA).
📍 Switzerland | 🕐 1.5 yrs | 📅 Start: Spring 2025
Details: apply.refline.ch/273855/1727/...
Please share widely.

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Reposted by Dr. Dirk N. Karger

Departement Umweltsystemwissenschaften (D-USYS), ETH Zürich @usyseth.bsky.social · Apr 16

In August 2020, Konrad "Koni" Steffen tragically disappeared on the ice of Greenland.💔 A documentary at Kino Frame in Zürich offers an intimate tribute to Koni, revealing the brilliant scientist and the warm, thoughtful human being. 👉 frame.ch/de/movies/334 @wslresearch.bsky.social

Der Eismann | Frame

Das Frame ist das Haus für kulturelle Begegnungen mit einzigartiger Lage an der Europaallee und das «Home of Zurich Film Festival». Das Kino gegenüber dem 25Hours Hotel bietet das ganze Jahr über ei...

frame.ch

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Dr. Dirk N. Karger @dirknkarger.bsky.social · Apr 16

For early career researchers who had their funding cut in the US: Consider coming to Switzerland and integrate future climate change scenarios with developmental work! #climatejobs, @climate.noaa.gov , @noaa.gov, @altusaid.altgov.info

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