Christiane Werner

The stories we tell matter. I know this not from watching but from memory. I was just a child, held behind barbed wire in a U.S. internment camp, when an atomic bomb obliterated Hiroshima—killing members of my family.

A chart from https://docs.nrel.gov/docs/fy25osti/95135.pdf , sourced to the IEA as of April 2025, showing solar power as % of generation in different countries. This varies between over 25% for the Netherlands, through about 24% for Spain, about 14% EU average, about 8% for the US to almost nothing in Norway. Text says that the IEA reckons global is about 10%.

I do bloody love this chart. Who'd have thought, 20 years ago, that solar would be ~10% of world electricity generation by 2024 - and over 20% in some countries, rising rapidly in others?

Definitely not me. When I started this job I hoped to be part of a solution for maybe 1% of global electricity.

Localized Response of De Novo Terpenoid Emissions Through the Jasmonate Signaling Cascade in Two Main European Tree Species The systemically induced production of volatile organic compounds (VOCs) in undamaged tissues of plants under herbivore attack is still not fully understood, particularly with respect to below- and a....

Localized Response of De Novo Terpenoid Emissions Through the Jasmonate Signaling Cascade in Two Main European Tree Species
#VOCs #PlantScience

It’s a pleasure to have contributed to the paper of #MirijamMeischner @chriswernerlab.bsky.social
Congrats Mio, to this nice chapter of your PhD thesis.

Alternativ approach to monitoring tree sway lead by Josefine Umlauft @scadsai.bsky.social

w @chriswernerlab.bsky.social Christian Wirth, Fabian Limberger, Kilian Gerberding, Teja Kattenborn

Measurements @ecosense-sfb-1537.bsky.social

#forestMonitoring #treeSway #seismic #machineLearning

Dynamic Shifts in Radial Sap Flow of Two Temperate Tree Species in Response to the Dry Summer 2022 Species-specific regulation of water fluxes and storage in the xylem are important drivers of drought tolerance. However, differences may occur along the radial profile of the xylem, potentially modi...

New #ECOSENSE paper out! doi.org/10.1002/eco....

Congrats to Stefanie Dumberger and @simonhaber.bsky.social for their first first-author respectively senior-author paper 👏
Check out their research on species-specific drought tolerance linked to the xylem profile 🧪🌲🌡️

#ClimateChange #Forest #DFG

Withanolide #biosynthesis from nightshade plants decoded. Withanolide steroids are used as a basis for medications for centuries.

Now published by a team around @frankelab.bsky.social + @puckerlab.bsky.social in @natcomms.nature.com (DOI: 10.1038/s41467-025-61686-1).

Aerial view of the experimental forest near Hartheim with the 30-metre-high crown access tower in September 2023. Dead Scots pines and gaps in the canopy are visible throughout the forest. Photo: Fabio Scarpa

Years of drought turn forest into source of CO₂ - Press release on our research with @simonhaber.bsky.social and @chriswernerlab.bsky.social at @icos-ri.eu site DE-Har, showing tree mortality following droughts has fundamentally shifted forest structure & functioning uni-freiburg.de/en/years-of-...

Meinung: Friedrich Merz’ Bundestagsrede: Ein Zechpreller als Bundeskanzler – Kolumne Friedrich Merz findet, Deutschland müsse erst einmal nicht mehr so viel für die Zukunft der Menschheit tun: Unser Anteil an den Emissionen sei doch so klein. Das ist ein sehr schlechtes Argument.

Das »nur zwei Prozent der globalen CO2-Emissionen«-Argument reflektiert nicht nur Verantwortungslosigkeit, Rücksichtslosigkeit und Ignoranz, sondern auch eine extreme Kurzsichtigkeit.
Wer die Gründe dafür noch nicht verstanden hat: Bitte den Artikel lesen! ⬇️
www.spiegel.de/wissenschaft...

Today was another unusually hot day in Freiburg, with temperatures above 38°C. Our urban weather station network operated by @uni-freiburg.de and funded by @erc.europa.eu reveals intra-urban differences and where it was coolest (in a forest). Explore the map weather.uni-freiburg.de/map/freiburg...

Luftaufnahme des Versuchswaldes bei Hartheim mit dem 30 Meter hohen Kronenzugangsturm im September 2023. Im gesamten Wald sind abgestorbene Waldkiefern und Lücken im Kronendach erkennbar. Foto: Fabio Scarpa.

#UniFreiburg -Studie zeigt: Wiederkehrende Hitze-&Dürrejahre seit 2018 haben einen Kiefernwald in Südwestdeutschland langfristig geschädigt. >60% der Kiefern starben ab, Laubbäume rücken nach – doch das Ökosystem setzt nun mehr CO₂ frei, als es bindet. ufr.link/duerrejahre @simonhaber.bsky.social

A day with students in our #ECOSENSE #forest...good escape the #heatwave. #forest help cooling 🌳🌲

We still have a few places left if you are interested in #forests #functioning and #smart #sensor #networks..

🌲🌳💧 Researchers have investigated the water uptake depth of spruce, copper beech and Douglas fir. Beech and Douglas fir had access to water from deeper soil layers, unlike spruce. Whether it is a pure or mixed stand also makes a difference.

doi.org/10.1111/plb.70058

@christina-hn.bsky.social

Recurrent hot droughts cause persistent legacy effects in a temperate Scots Pine forest A series of hot drought events caused persistent legacy effects in a Scots Pine forest, with severe negative impacts on ecosystem carbon fluxes.

By combining ecophysiological, satellite, and ‪‬eddy covariance data we show how our @icos-ri.eu forest ecosystem changes in function and structure following hot-drought-induced tree mortality. New article by
@simonhaber.bsky.social as part of @ecosense-sfb-1537.bsky.social
doi.org/10.1111/plb....

21st June: #ShowYourStripes day

1) Download your warming stripes: www.ShowYourStripes.info

2) Use the graphics to start conversations about climate change risks, how you are already experiencing the consequences and what you are doing about it

3) Encourage others to do the same

Home - Open Letter Against the rise of Fascism in 2025 The 2025 letter has been signed by over 400 academics, including 31 Nobel Prize winners. Join them in defending democracy. Our goal The letter is a collective denunciation of the mounting threats to a...

Read, and perhaps sign, this open letter against fascism. I was an early signer and support the message.

stopreturnfascism.org

Another great talk of Steffi Dumberger showing leaf #VOC emissions in our #ECOSENSE forest at @voltcenter.bsky.social @@ecosense-sfb-1537.bsky.social

Great talk by Mirjam Mirjam of #VOC belowground #interaction at the @voltcenter.bsky.social conference in Kopenhagen from @ecosense-sfb-1537.bsky.social

Registration for our #ECOSENSE conference end of September in Freiburg is OPEN NOW 📡🌲🧪
We also offer limited places for an excursion to our field site, so be quick!

Detailed information on the conference:
uni-freiburg.de/ecosense/eco...

Registration link:
express.converia.de/frontend/ind...

Great start of the last day of the 1st International #Symposium on #Volatile #Interactions in #Ecosystems with a keynote talk by Colin Murrell from the University of East Anglia. This may be his last scientific talk now that he will enjoy his retirement, so it is extra special to have him.

A victory for the federal scientific workforce! We could not stand by while this irreparable harm continues at NSF, NOAA and all our scientific agencies.

TODAY the judge granted our request to temporarily HALT the mass firings at federal agencies under Trump’s Executive Order.

Ex-Umweltministerin Lemke kritisiert Abschaffung des Meeresbeauftragten Die Merz-Regierung hat mehrere Sonderbeauftragte der Ampel abgeschafft – darunter auch den Meeresbeauftragten aus dem Ex-Ministerium von Steffi Lemke. Die Grüne beklagt nun die Streichung als reine Sy...

Schlechter Start: noch keinen Tag im Amt hat die neue Regierung schon die Sonderbeauftragten für Meeresschutz und für internationale Klimapolitik abgeschafft.
Ohne gesunde Meere und stabiles Klima wird unsere Zivilisation kaum überleben.

www.spiegel.de/politik/deut...

Impressive time-lapse of leaf emergence during the last weeks recorded by phenocams at our research forest @uni-freiburg.de. In the @dfg.de funded @ecosense-sfb-1537.bsky.social we study forest ecosystem functioning, and species interactions with novel sensor technologies uni-freiburg.de/ecosense/

Successfull week in Vienna @egu.eu presenting the latest results of our CRC @ecosense-sfb-1537.bsky.social
Curious to learn more about the latest development in novel sensor networks for environmental sensing? Join us for our international conference in September! @chriswernerlab.bsky.social

Ah thanks

One position filled one still open...looking for a highly motivated PhD

Please RT: 2 PhD position @uni-freiburg.de investigating #reccurent #drought in #forest using in-situ #stableisotopes in #ecohydrology

Can you spot the dead Pine trees? If you are interested to learn more about legacy effects in this ecosystem, join me for my talk @egu.eu this afternoon: meetingorganizer.copernicus.org/EGU25/EGU25-...
@ecosense-sfb-1537.bsky.social
@envmet.bsky.social @chriswernerlab.bsky.social

Join us this afternoon #EGU25 if you are interested in #drought #legacy on #forests @simonhaber.bsky.social @ecosense-sfb-1537.bsky.social
meetingorganizer.copernicus.org/EGU25/EGU25-...

We arrived at #EGU25👍🏻 First day of #EGU25 with @ecosense-sfb-1537.bsky.social team. @chriswernerlab.bsky.social @simonhaber.bsky.social