The Wirth-Weigelt Working Group
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agwirthweigelt.bsky.social
The Wirth-Weigelt Working Group
@agwirthweigelt.bsky.social
The Leipzig University - Systematic Botany and Functional Biodiversity Working Group. Asking questions about the causes and consequences of biodiversity!
Science meets finance 🌱
At the event “Biodiversität – die unterschätzte Abhängigkeit” in Potsdam, organised by the Nord-Ostdeutsche Sparkassenakademie, Dr. Jori Marx presented insights from the #Faktencheck #Artenvielfalt and joined the panel discussion on how the financial sector depends on nature.
November 13, 2025 at 11:01 AM
Scenes from the @treedi.bsky.social conference 🌳
Participants joined Prof. Christian Wirth for a guided tour through the ARBOFun arboretum - exploring how long-term measurements help us understand forest dynamics and tree functioning #treeDi #ForestEcology #PlantScience
November 11, 2025 at 12:40 PM
Autumn is coming to the Arboretum #ArboFun! The field season is drawing to a close, but the colours are still a work of art at this time of year 🥰 Goodbye summertime! #fieldwork #season #autumn #Biodiversity #Research
October 30, 2025 at 10:07 PM
A few throwback impressions from this year’s #iDivConference 🌱 Great to see so many contributions from our group - here featuring @lsachsenmaier.bsky.social, Annalena Lenk, and @karlandraczek.bsky.social.
Thanks to everyone who made it such a nice meeting! @idiv-research.bsky.social #Science
October 20, 2025 at 3:06 PM
Start of our new root shrinkage campaign on 40 herbaceous species, led by Dr. Anvar Sanaei. Excited to see what we’ll uncover! 🌿 #PlantEcology #Research #BelowgroundEcology #LeipzigUniversity
October 20, 2025 at 2:39 PM
Mid-September a new #BioSmoke campaign in Spain kicked off 🇪🇸. Julia Olbrich collected pyrophyte leaf samples, while Kai Weber (@kai-jwd.bsky.social) ran vegetation surveys and drone-based LiDAR & hyperspectral imaging in a region with high wildfire risk near Albacete (Castilla-La Mancha).
October 3, 2025 at 6:08 AM
🌱 iDiv @idiv-research.bsky.social begins a new chapter: core funding is now jointly supported by #Saxony, #SaxonyAnhalt & #Thuringia. Grateful for this strong commitment to #biodiversity #research – proud to be part of this inspiring community shaping the future of #science
September 29, 2025 at 6:03 PM
💧 Last week, we measured the leaf water potential at the #Auwald #crane - key data for understanding the water status of trees and their responses to drought.

#WaterPotential #Drought #ClimateResponse #Trait #Leipzig #CanopyCrane #Fieldwork
September 24, 2025 at 2:18 PM
Writing retreat recap: focused days drafting and revising, laptops, printed pages, evenings of hikes, games, and a campfire/BBQ. What a nice and productive week! 📝 🌲 🔥
September 12, 2025 at 8:22 AM
Scenes from China, where PhD student Michèle ter Huurne is doing fieldwork with the @treedi.bsky.social project: forests, measurements, and big smiles between long days. Keep it up, Michèle!🌱📷
Photos: Michele ter Huurne #TreeDi #Fieldwork
September 12, 2025 at 8:03 AM
🌱 #Fieldwork days at The Jena Experiment - @jena-experiment.bsky.social!
Scanning roots with a minirhizotron, tracking seasonal changes & traits, plus plant surveys & soil checks. Led by PhD candidate Srijna Saxena with support from Tom Künne. Can’t wait to see what the data reveal!
#RootTraits
August 8, 2025 at 9:29 AM
Back in the floodplain forest 🌳
We’re monitoring oak regeneration under different conditions. These seedlings are part of an experiment to better understand forest dynamics in changing environments. #Quercus #Leipzig #Floodplainforest #Oak #Regeneration

📍 Leipzig Auwald
August 6, 2025 at 2:25 PM
📊 „Faktencheck Artenvielfalt“ is the first comprehensive report to show the actual state of biodiversity in Germany🌿. The full report has now been published in English! 📥Download for free here: www.feda.bio/faktencheck-en. Watch the full video: tinyurl.com/mps5vfhf #Biodiversity #research #factcheck
July 30, 2025 at 8:39 AM
Root shrinkage measurements of 40 #tree species at #ARBOfun completed! We've measured root #shrinkage, to understand #root-soil contact under #drought. The campaign was led by Dr. Anvar Sanaei with great support of our technician Nicole Nabel. Excited to see the results! #RootTraits #PlantScience
July 16, 2025 at 9:17 AM
Last week we had our campaign for measuring leaf water potential - at 38°C outside – thank you, #Leipzig #Floodplainforest, for the shade! 🌳💧
#fieldwork #plantphysiology #heatwave #Auwald #Science #leafwaterpotential #AuwaldKran
July 8, 2025 at 4:36 PM
🌙 We had a great #LongNightOfScience in Leipzig!
Thanks to Annalena Lenk, Mathias Scholz (UFZ) & Stefan Alsheimer (City of Leipzig) for the inspiring Auwald walk & crane tour.
And thanks to everyone who joined us!
#Auwald #ScienceForAll #Leipzig
June 24, 2025 at 8:11 AM
Come visit us and have a look on our project in the botanical garden for the #longnightofscience in #Leipzig! 🌿🍁🍃 #science #biodiversity #research #fun
June 20, 2025 at 5:06 PM
🎉 Proud to share that our lab has achieved LEAF Gold Certification for sustainable lab practices!
As part of the NachLabs project, we're committed to reducing environmental impacts in research.
Learn more: www.ucl.ac.uk/sustainable/...
#SustainableScience #LEAF #GreenLab
May 22, 2025 at 8:25 AM
🌿 Fieldwork – Leipzig, Spring 2025 🌿
Pollen traps in the canopy, soil sensors in the arboretum – and a top team in action!
Huge thanks to Ron, Tom, Lena, Daniel, Melanoie & Anneke – and everyone behind the scenes.
#Fieldwork #Ecology #CanopyCrane #ARBOfun
May 15, 2025 at 12:30 PM
🔬 Exciting times in the lab!
We’ve just installed our brand-new Unicube - an elemental analyzer – now being set up and tested.
With it, we’ll be analyzing the carbon-to-nitrogen (C:N) ratio in roots and leaves to better understand plant nutrient dynamics.

Stay tuned for first results! 🌱💡
May 8, 2025 at 10:55 AM
Field season at the Arboretum Großpösna is in full swing! 🌿
Last week, our PhD candidate Michèle ter Huurne and colleagues collected soil samples.

Big thanks to the Faculty of Physics & Earth System Sciences and the Institute of Geography for doing the soil core extractions!

#Fieldwork #Ecology
April 17, 2025 at 8:10 AM
Christian Wirth and @jorimmarx.bsky.social
presented the #FaktencheckArtenvielfalt at the #leipzigerbuchmesse last Friday together with Helge Bruelheide, Robert Paxton & Romy Zeiss. Thank you @unileipzig.bsky.social, @unihalle.bsky.social, @uni-jena.de !
#Buchmesse #Biodiversity #Leipzig
April 2, 2025 at 7:39 AM
We just wrapped up the spring retreat of The Jena Experiment. Our professors—Alexandra Weigelt, Liesje Mommer, and Bernhard Schmid—enjoyed a field trip during the retreat ☘️ 🪴🏵️ @jena-experiment.bsky.social #thejenaexperiment #fieldwork #nature #Ecology #Biodiversity
March 27, 2025 at 10:31 AM
ARBOfun Meeting 2025 @iDiv – Thanks for your brilliant talks, the fruitful discussions, and two inspiring days! Exciting to see how our research evolves on this unique platform, where 100 different tree species grow side by side. #ARBOfun
February 24, 2025 at 7:01 AM
After an establishment phase with drought treatments, and first harvest, she continued with species-specific intermediate harvests of leaves and fine roots before re-watering the plants to measure recovery.
September 20, 2024 at 7:16 AM