Dirk Nikolaus Karger

Dr. Dirk N. Karger

@dirknkarger.bsky.social

990 followers 300 following 44 posts

Scientist bridging #Climate and #Biodiversity...

Videos

Environmental science 60%

Geography 17%

Posts Replies Media Videos

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · 6d

Damiano Righetti from our DME lab just presented his cool research at #TIBS2026 on trophic species distribution modelling of tuna and its pray.

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · 6d

@wennading.bsky.social from the DME lab presented her great work at #TIBS2026 on the origin of mountain floras in response to biotic assembly, orogeny and climate change. If you are interested, her is the latest paper on the topic: www.science.org/doi/full/10....

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · 6d

Our DME member @dirknkarger.bsky.social gave a great talk on adapting land use to climate change and how this can mitigate global biodiversity decline.

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · 6d

Interesting talk by @nezimmermann.bsky.social from our DME lab today at #TIBS2026 on a new conceptual framework on #BiomeBiogeography. This concept is at the core of our #biome project, in which several lab members are involved.

Reposted by Dirk Nikolaus Karger

Christian Hof @christianhof.bsky.social · 6d

Great talk at #TIBS2026 by @dirknkarger.bsky.social on how adapting land use to climate change may mitigate global biodiversity decline. Along these lines: check out our new paper on land use and climate change impacts on global biodiversity: onlinelibrary.wiley.com/doi/full/10....

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · 7d

🗾The poster sessions at #TIBS2026 are a great opportunity to exchange results and ideas, and to meet new people. We enjoy the interaction and atmosphere. And we will leave with a rich set of new ideas and connections.🚀

#Biogeography #Macroecology #Biodiversity #CHELSA
@wslresearch.bsky.social

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · 7d

Elena Plekhanova from @wsl-dme.bsky.social just gave a very interesting talk on how to use #AI in combination with #RemoteSensing to map global #biomes.

#Macroecology #Biodiversity #Mapping
@wslresearch.bsky.social

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · 8d

Great talk by @vboussange.bsky.social from @wsl-dme.bsky.social on "Multiscale species richness modelling". Victor developed a cool method to map species richness in a way that allows spatial scaling and to retrieve scale-relevant information.

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · 8d

The @wsl-dme.bsky.social lab members arrived at #TIBS2026 in Aarhus. We are excited to enjoy great talks, posters, workshops, discussions with colleagues and friends, and we look forward to contribute as well, with 7 oral and 5 poster contributions.
#Biogeography #Macroecology #Biodiversity

Reposted by Ingolf Kühn, Niklaus E. Zimmermann, Dirk Nikolaus Karger

Wenna Ding @wennading.bsky.social · 25d

How have mountain building and climate change shaped alpine biodiversity over millions of years? Check out our new study in Science Advances! www.science.org/doi/10.1126/...

The asynchronous rise of Northern Hemisphere alpine floras reveals general responses of biotic assembly to orogeny and climate change

The asynchronous rise of Northern Hemisphere alpine floras was shaped by general responses to orogeny and climate change.

www.science.org

Reposted by Kimberly A. Prather, Luc Int Panis, Gavin L. Foster , and 1 more Kimberly A. Prather, Luc Int Panis, Gavin L. Foster, Dirk Nikolaus Karger

David Ho @davidho.bsky.social · 29d

The dismantling of NCAR should be the trending story on Bluesky, not the fucking Oscars leaving ABC for YouTube.

Trump moves to shut down Boulder climate research lab NCAR, drawing rebukes from Colorado officials

Federal lawmakers called the planned NCAR closure “deeply dangerous” and “blatantly retaliatory.” Gov. Jared Polis said: “If true, public safety is at risk and science…

www.denverpost.com

Reposted by Dirk Nikolaus Karger

Niklaus E. Zimmermann @nezimmermann.bsky.social · Nov 17

🌧️ If your team members are patiently waiting for 1h in the rain in a tropical #cloudforest, chatting, playing, laughing and happily continue fieldwork with rain-sensitive instruments as soon as the rain stops & finish the day with a “high five”: Now you know, you have a fantastic team! 🫶

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · Nov 14

Exploring the tropical cloud forests of #Guacamayos. 🔎 Foggy, rain-soaked and mild temperatures: #cloudforests are some of the most species- and endemism-rich biomes on Earth. Despite covering only 0.4% of global land, they host 3,700 #species of birds, mammals, amphibians and tree ferns. 🌧️🌳🌿

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · Nov 11

🚁🌳 We are collecting #biome data in #Ecuador using three types of #drones:

1️⃣ #LiDAR – to analyze vertical biomass distribution
2️⃣ Multispectral – to assess canopy leaf area
3️⃣ Photo – to capture leaf imagery

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

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

🌳 Towering trees (often >50 m), massive buttress roots and woody lianas are typical plant traits of tropical rainforests. 🌧

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · Nov 8

🌿Fieldwork in the #Yasuni National Park, #Ecuador.🦜
Our researchers are studying the structural and functional properties of #rainforests to better understand and define #biomes.🌳🔎

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · Nov 5

A breathtaking sunrise with a view of the #Antisana volcano on the road from Quito to Yasuní National Park.☀️🌋

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · Nov 4

The BIOME team explored the high-altitude city of #Quito (2,850 m) before heading deep into the Amazon rainforest for fieldwork. 🌳🌿

Reposted by Sonia I. Seneviratne, Dirk Nikolaus Karger, Jonathan von Oppen

MeteoSchweiz @meteoschweiz.ch · Nov 4

MeteoSchweiz, die @ethz.ch und C2SM präsentieren die neuen Schweizer Klimaszenarien.

Diese zeigen, wie sich das Schweizer Klima verändert, wenn die globale Mitteltemperatur z.B. um 3 Grad steigt.

#klimaszenarien #meteoschweiz #ETH #C2SM #NCCS

Die Schweizer Klimaszenarien 2025

MeteoSchweiz stellt in Zusammenarbeit mit der ETH Zürich und C2SM unter dem Dach des National Centre for Climate Services (NCCS) die neusten Erkenntnisse zum...

www.youtube.com

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

WSL Dynamic Macroecology @wsl-dme.bsky.social · Oct 31

🌎 Our BIOME project team has just begun a 3.5-week research expedition in Ecuador! 🇪🇨 They’ll be conducting fieldwork across diverse landscapes to study how biomes have evolved and how to define them. 🔎🌿🏔️ Stay tuned for field updates! ✨
👉BIOME project: shorturl.at/RLQPw

Reposted by Francis Martin, Dirk Nikolaus Karger

Arthur Gessler @arthurobuntspecht.bsky.social · Oct 1

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

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus Karger

Michael Nobis @michaelnobis.bsky.social · Sep 22

🔊 New paper: first integration of population genetics🧬 and dynamic species distribution modeling🌐 using #KISSMig to reconstruct postglacial dynamics of wild black pepper, endemic to India’s Western Ghats. #macroecology #popgen #phylogeography #biogeography

👉 onlinelibrary.wiley.com/doi/10.1111/...

Reposted by Carl J. Percival, Dirk Nikolaus Karger

David Ho @davidho.bsky.social · Mar 18

Holy shit. I don’t think I’m exaggerating when I say they’re trying to kill us all.

“The Environmental Protection Agency plans to eliminate its scientific research arm, firing as many as 1,155 chemists, biologists, toxicologists and other scientists”

Trump Administration Aims to Eliminate E.P.A.’s Scientific Research Arm (Gift Article)

More than 1,000 chemists, biologists and other scientists could be laid off under a plan to dismantle the Office of Research and Development.

www.nytimes.com

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus 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.

Reposted by Niklaus E. Zimmermann, Dirk Nikolaus 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. 🎯

Reposted by Ingolf Kühn, Ben Bond‐Lamberty, Elena Litchman , and 9 more Ingolf Kühn, Ben Bond‐Lamberty, Elena Litchman, Márk E. Hauber, Andrew L. Jackson, Urška Demšar, Julian Schrader, Dirk Nikolaus Karger, Susanne Lachmuth, Julen Astigarraga, Mariana C. Chiuffo, Billur Bektaş

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

Reposted by Dirk Nikolaus Karger, Julien Barrere

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...

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

Reposted by Arthur Geßler

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

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

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

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