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The Jena Experiment

@jena-experiment.bsky.social
1.3K followers 236 following 56 posts

One of the longest-running grassland biodiversity experiments worldwide (since 2002). Uncovering the mechanisms that drive biodiversity-ecosystem functioning (BEF) relationships over time. the-jena-experiment.de Funding: @dfgpublic.bsky.social

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Wirth-Weigelt Research Group @agwirthweigelt.bsky.social · 15h
A busy and inspiring #CBC2026 for our group last week 🌿 We contributed across the programme, with talks & posters by PhD candidates Srijna Saxena and Annalena Lenk, Dr Anvar Sanaei & others, and hosted an excursion to the Leipzig floodplain forest and our canopy crane. Great exchange!
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The Jena Experiment @jena-experiment.bsky.social · 21/09/2026
Belated update from the Ecotron ResCUE experiment 🌱 The first sampling after 6 weeks of drought is completed 🌞, now we're waiting for 6 weeks of recovery to sample again. 🌧️ Let's see how plant functional diversity shapes the communities' resistance! 📏🏋️‍♂️
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Wirth-Weigelt Research Group @agwirthweigelt.bsky.social · 25/08/2026
🌱 Root harvest at the Ecotron! Together with Liesje Mommer’s group from Wageningen University & Research (@w-u-r.bsky.social) , we’re harvesting and processing roots to explore belowground plant responses and root functioning. 🔬🌱 #JenaExperiment #RootScience #BelowgroundEcology
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Christoph Scherber @cscherber.bsky.social · 23/07/2026
New @Science Advances paper out showing #Biodiversity effects on multitrophic interactions in #croplands, grasslands and forests! www.science.org/doi/10.1126/...
Experimental grassland plots from a biodiversity experiment
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The Jena Experiment @jena-experiment.bsky.social · 15/07/2026
🌐📏🧪🌱 New research synthesizing data from our experiment and many others finds stronger biodiversity effects on functioning under drought & aridity in grasslands than forests 👇
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The Jena Experiment @jena-experiment.bsky.social · 10/06/2026
New results from 5 experimental grasslands, including ours! 👇
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The Jena Experiment @jena-experiment.bsky.social · 28/05/2026
When vacuuming spiders makes sense: Ongoing since 2010, our first of three annual arthropod samplings is done 🪲🕷️🐝 160 bags are stored away in the freezer, waiting for identification 📏
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Nature @nature.com · 07/05/2026
Nature research paper: Predicting temporal stability and resilience from resistance and recovery go.nature.com/4uzovpx
go.nature.com
Predicting temporal stability and resilience from resistance and recovery - Nature
New predictions for how temporal stability and resilience depend on their resistance and recovery components are explored.
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The Jena Experiment @jena-experiment.bsky.social · 20/05/2026
New paper in Ecology Letters by Zhang et al. 🌱☘️ "Species Assembly Is Lineage Specific: Phylogenetic Divergent Species Aggregate in Some Lineages but Segregate in Others" doi.org/10.1111/ele....
doi.org
Species Assembly Is Lineage Specific: Phylogenetic Divergent Species Aggregate in Some Lineages but Segregate in Others
Phylogenetic relatedness of co-occurring species is often used as a proxy for inferring prior assembly processes. However, this approach ignores the possibility that different phylogenetic lineages m...
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Claudia Guimaraes Steinicke @cguistei.bsky.social · 14/04/2026
Prof. Alexandra Weigelt, Prof. Alexandra Wright and I are delighted to invite colleagues to submit an abstract to our session 1 at the CBC Conference, in Leipzig, Germany. Abstract submission by April 21st lnkd.in/dz-bHADa lnkd.in/dq3ZUztV
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The Jena Experiment @jena-experiment.bsky.social · 01/04/2026
Scenic spring retreat with our team at the historical observatory @uni-goettingen.de From field updates & planning our upcoming drought experiment "ResCUE" to impressive progress reports by our PhD candidates & Postdocs - thanks to everyone who organised, participated and to our hosts! 🌱🌼
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Biodiversity Exploratories @bexplo.bsky.social · 05/03/2026
Good news! ✨ The deadline has been extended – you can still submit your abstract and secure the early-bird rate. Look forward to inspiring keynote speakers and join us for an excursion to the Exploratorium Schorfheide-Chorin! 🌱🌿 Share the news with your scientific community. #BE20conference #🌐
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The Jena Experiment @jena-experiment.bsky.social · 17/03/2026
Belated paper update from February: A new study by @sarawinterfeldt.bsky.social et al shows that higher plant diversity boosts microbial drought resistance and promotes soil carbon storage 🌱🦠 doi.org/10.1111/1365... @rousklab.bsky.social @journalofecology.bsky.social
doi.org
Plant diversity increases microbial resistance to drought and soil carbon accumulation
We investigated how plant diversity influenced soil microbial processes during moist conditions and an experimental drought. Higher plant diversity increased below-ground plant input. This increased ...
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iDiv Biodiversity Research @idiv-research.bsky.social · 20/02/2026
🚀 iDiv and @uni-jena.de are hiring! Join the Ecological Networks Lab as an IT Specialist (full-time, permanent). Work on lab automation, software dev, and cutting-edge research! 🌿💻 🗓️ Apply by 27 Mar 2026 📍 Leipzig (Germany) 👉 www.idiv.de/career/job-o... #JobAlert #ITJobs #Biodiversity #iDiv
idiv.de
Job Openings
Explore exciting career opportunities at iDiv. Join a modern, international, and innovative research centre in the heart of Germany.
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Terrestrial Ecology Research Group - TUM @terrecolgroup.bsky.social · 26/01/2026
We are currently looking for a postdoctoral researcher with expertise in community ecology to work in the Arthropods Core Project of the Biodiversity Exploratories @bexplo.bsky.social Reposting is much appreciated for widest reach! Thanks. More information here: www.lss.ls.tum.de/fileadmin/w0...
lss.ls.tum.de
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The Jena Experiment @jena-experiment.bsky.social · 16/01/2026
New study by Medina-van Berkum et al. in @pnas.org Plant diversity influences plant volatile emission with varying effects at the species and community levels 🌱🌼🌿 -> "At the community level, plant species richness directly enhanced VOC emission and increased VOC richness" doi.org/10.1073/pnas...
doi.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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Bartosz Bartkowski @bartoszbartk.com · 12/01/2026
New paper with many smart people, led by Nico Eisenhauer & Marie Sünemann @eisenhauerlab.bsky.social, surveying the state of literature on the effects of soil biodiversity on ecosystem functioning www.nature.com/articles/s44...
Soil biodiversity is a key driver of ecosystem function, including nutrient cycling, organic-matter decomposition, plant productivity, climate regulation and pathogen control (with subsequent effects on animal, human and plant health). A foundational review in 2014 described the functional role of soil biodiversity in ecosystems, but our understanding of the relationship between soil biodiversity and ecosystem functioning has deepened over the past decade. In this Review, we highlight progress in the field, discuss the approaches and methodological advances that have enabled this progress, and identify emerging research questions. Although the spatiotemporal patterns and community dynamics of soil communities are becoming well understood, topics with important knowledge gaps include the climate feedback effects of soils, the ecology of urban soils and the development of soil health indicators. Global collaborative networks, linking existing databases, and monitoring soil biodiversity and ecosystem functioning are important ways to address these knowledge gaps. By considering the relationships between soil biodiversity and ecosystem functioning we can connect small-scale interactions among plants, microorganisms and animals to ecosystem services and planetary sustainability.
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Benjamin Wildermuth @bmwildermuth.bsky.social · 12/01/2026
In the current issue of NEE, you can find our research on the community assembly mechanisms behind arthropod 🪲🕷️ biomass declines ⚖️📉 both as the original paper: www.nature.com/articles/s41... and (new🌟) as research briefing by @ebelingae.bsky.social and myself: www.nature.com/articles/s41...
nature.com
Client Challenge
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Journal of Ecology @journalofecology.bsky.social · 09/01/2026
🏅Long-term biodiversity experiments have shown highly variable responses of individual species to increasing plant diversity. This new article shows that fast-growing, high-nutrient demanding species are winners, especially in young high-diversity mixtures 🔍 Read: buff.ly/KyaWCSy
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The Jena Experiment @jena-experiment.bsky.social · 23/12/2025
We are very happy that 2025 has seen many great PhD defenses in our project. Congratulations once again!! Following the (random) order of pictures: Leonardo Bassi Laura Argens Francesca de Giorgi Pamela van Berkum Justus Hennecke Ana Bonato Asato Maximilian Bröcher ☘️🐞
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The Jena Experiment @jena-experiment.bsky.social · 22/12/2025
New study by Roscher et al. in @journalofecology.bsky.social Making use of our established mixtures, they found that plant species that gained biomass (winners) in high-diversity plots have fast traits - but this is mostly detectable when mixtures are young. 🌱 doi.org/10.1111/1365...
doi.org
Plant species with ‘fast’ traits are winners in young and high‐diversity plant communities
The results suggest that fast-growing, high-nutrient demanding species are winners in high-diversity mixtures, which can be well predicted from their SLA. However, the results regarding NLeaf suggest...
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The Jena Experiment @jena-experiment.bsky.social · 09/12/2025
New study by @bmwildermuth.bsky.social et al. in @natecoevo.nature.com They asked whether arthropod biomass declines due to species loss per se, or which species are lost, or because of shrinking abundances of persisting species. 🪲🕷️🐝🦗 doi.org/10.1038/s415...
doi.org
Arthropod species loss underpins biomass declines - Nature Ecology & Evolution
Insects are declining in many regions. Here the authors show that arthropod biomass losses in Jena Experiment and Biodiversity Exploratories time series are driven more by species loss than by species...
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The Jena Experiment @jena-experiment.bsky.social · 09/12/2025
New paper by Solbach et al. @newphyt.bsky.social They find that repeated summer droughts weaken plant defense against protistan plant parasites 🌱🦠 doi.org/10.1111/nph.... @ag-bonkowski.bsky.social @dumack.bsky.social @eisenhauerlab.bsky.social
doi.org
Legacies of consecutive summer droughts on soil‐borne plant parasitic protists (Oomycota: Stramenopila and Phytomyxea: Rhizaria) and protistan consumers (Cercozoa: Rhizaria) along an experimental plan...
Increasing frequencies of severe summer droughts and plant diversity loss disrupt ecosystem functioning and stability of European grasslands. Understanding how these factors interact with pathogens .....
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Dezene Huber 🍁 🌻 @dezene.me · 05/12/2025
One more piece of evidence, on a growing pile, that insects are in decline. "...the general species turnover and biomass trends emphasize ongoing arthropod community simplification, and that even common species may be increasingly under threat." 🪲🪳🧪🌍 www.nature.com/articles/s41...
nature.com
Arthropod species loss underpins biomass declines - Nature Ecology & Evolution
Insects are declining in many regions. Here the authors show that arthropod biomass losses in Jena Experiment and Biodiversity Exploratories time series are driven more by species loss than by species...
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Benjamin Wildermuth @bmwildermuth.bsky.social · 05/12/2025
Nette Zusamfassung (auch Audio) unserer aktuellen Forschung zum Insektensterben 🪲 vom MDR: www.mdr.de/wissen/umwel...
mdr.de
Insektensterben: Studie zeigt Hauptursache für Biomasse-Rückgang | MDR.DE
Über 90 Prozent des Rückgangs der Insektenbiomasse in deutschen Grünlandflächen sind auf Artenverlust zurückzuführen. Das ist das zentrale Ergebnis einer neuen Studie, veröffentlicht in Nature Ecology...
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Nature Ecology & Evolution @natecoevo.nature.com · 04/12/2025
What are the mechanisms behind terrestrial arthropod declines? @bmwildermuth.bsky.social and colleagues have some answers www.nature.com/articles/s41... @bexplo.bsky.social @idiv-research.bsky.social @jena-experiment.bsky.social
nature.com
Arthropod species loss underpins biomass declines - Nature Ecology & Evolution
Insects are declining in many regions. Here the authors show that arthropod biomass losses in Jena Experiment and Biodiversity Exploratories time series are driven more by species loss than by species...
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Biodiversity Exploratories @bexplo.bsky.social · 28/11/2025
Registration for the #BE20Conference is now open. We’re celebrating 20 years of the Biodiversity Exploratories with our first international conference. ✨ We appreciate when the news circulates in the community. www.biodiversity-exploratories.de/de/be20/ See you there. 🙂 @dfg.de @sgn.one
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Benjamin Wildermuth @bmwildermuth.bsky.social · 02/12/2025
New study on arthropod declines @natecoevo.nature.com 🪲 In two time series @jena-experiment.bsky.social & @bexplo.bsky.social we show how community (dis)assembly underpins local biomass declines. It mostly boils down to species loss, with identity losing relevance. www.nature.com/articles/s41...
nature.com
Arthropod species loss underpins biomass declines - Nature Ecology & Evolution
Insects are declining in many regions. Here the authors show that arthropod biomass losses in Jena Experiment and Biodiversity Exploratories time series are driven more by species loss than by species...
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iDiv Biodiversity Research @idiv-research.bsky.social · 02/12/2025
📢 Over 90% of local insect biomass decline in German grasslands is explained by species loss. “By the end of the study period, species loss, regardless of rarity or size, had become the main driver of decline”, says @bmwildermuth.bsky.social of #iDiv and @uni-jena.de www.idiv.de/majority-of-...
idiv.de
Majority of local insect biomass decline linked to species loss
A new study shows that over 90% of insect biomass declines are driven by shrinking species numbers, posing a risk to ecosystem function.
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Max Planck Institute for Chemical Ecology @mpi-ce.bsky.social · 07/11/2025
Huge congratulations to Pamela Medina van Berkum on successfully defending her PhD! Supervised by @sunsicker.bsky.social and Jonathan Gershenzon, her work on how plant biodiversity shapes chemical defenses bridges ecology, chemistry, and evolution. Pam is now part of Sybille’s group at @uni-kiel.de.
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The Jena Experiment @jena-experiment.bsky.social · 13/11/2025
This week, we had a great retreat with our PhDs, Postdocs & PIs in Leipzig @idiv-research.bsky.social Apart from sharing our progress, we hosted a session on extreme events with guest speakers @sebastian-sippel.bsky.social & @miguelmahecha.bsky.social Thanks for the insightful talks & discussion!
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Intraspecific Chemodiversity of Plants - Research Unit @chemodiversity.bsky.social · 11/11/2025
#Chemodiversity is an important driver for plant–arthropod interactions 🌿 🪲 🐝. For more info check out this very impressive work by RU members Lina Ojeda-Prieto, @robinheinennl.bsky.social binheinennl.bsky.social and Wolfgang W. Weisser together with Eliecer L. Moreno doi.org/10.1111/1365...
doi.org
Intraspecific plant chemodiversity at plot level has contrasting effects on arthropod functional groups
Read the free Plain Language Summary for this article on the Journal blog.
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The Jena Experiment @jena-experiment.bsky.social · 16/10/2025
New paper from our JenaTron facility: Bröcher et al. show that reciprocal effects between plants and invertebrate herbivores vary with plant species richness, plant history and soil history. Herbivores want nutritious plants with soil history, while they reduce plant height in monocultures 🐛🌱
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The Jena Experiment @jena-experiment.bsky.social · 07/10/2025
A new paper co-led by @henneckejustus.bsky.social in @newphyt.bsky.social shows that Grassland & forest community-level root traits along the fast-slow & the collaboraton gradient relate to many ecosystem functions. ➡️ future changes in plant composition may strongly alter ecosystem functioning 🌱🌲
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Karin Mora @karinmora.bsky.social · 01/10/2025
#iDivConference2025 today I present our study co-lead w C Guimaraes-Steinicke. Great work by our student K Wende. & great collaborators @agwirthweigelt.bsky.social A Weigelt, S Saxena & A Anwar. Floral vs veg structure fingerprints from #TLS intensity #JenaExperiment #Phenology #biodiversity
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Reassembly Research Unit @reassemblynet.bsky.social · 20/09/2025
Three exciting #PostDoc 🧑‍🔬👩‍🔬🧕 positions on #Ecological #Synthesis at TU Darmstadt @tuda.bsky.social for Reassembly #rainforest 🇪🇨 🌱🌴🦜 & #Biodiversity Exploratories 🌲🐄🚜🪲🐝🥀@bexplo.bsky.social Please spread widely ✉️♥️▶️ & apply quickly 🙃 www.reassembly.de/the-team/job...
Ecological synthesis including forest ecosystems, grassland, land use, climate change, time series, stability, ecosystem functioning, biodiversity, species interaction networks
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The Jena Experiment @jena-experiment.bsky.social · 12/09/2025
Two new studies from our site show that 1. Plant diversity decreases the competitive superiority of non-native invaders (Roscher 2025) doi.org/10.3897/neob... 2. Traits of the leaf economics spectrum do not always relate to species biomass (Bachmann et al. 2025) doi.org/10.1002/ece3... 🌱🍃
doi.org
Traits of the Leaf Economics Spectrum Do Not Always Relate to Species Biomass Proportions in Grassland Communities of Varying Diversity
We studied traits of the “leaf economics spectrum” (LES) in 138 experimental grassland communities composed of 20 grassland species, which represented different strategies in spatial resource acquisi...
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Benjamin Wildermuth @bmwildermuth.bsky.social · 30/08/2025
Why are we losing arthropod biomass? Because we're losing species? Because of which species we lose? Or because of declining abundances? Synthesizing time series from @jena-experiment.bsky.social & @bexplo.bsky.social I will present some answers @gfoesoc.bsky.social #gfoe2025 Tue 2 Sept, 11 am 🕷️🪲
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Gesellschaft für Ökologie e.V. @gfoesoc.bsky.social · 29/08/2025
Stay tuned for more updates and make sure to tag us with #gfoe2025 so we can feature your insights of the conference. We are looking forward to see you next week! @cofeuniwue.bsky.social @globalchangeeco.bsky.social @ecoresearchzoo3.bsky.social @uni-wuerzburg.de
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Andrew Barnes @barnesecodiv.bsky.social · 14/08/2025
It was a short visit, but wonderful to catch up with @eisenhauerlab.bsky.social again and to see some inspirational experimental sites at Bad Lauchstädt!
Leonore Hafermann getting inspiration for her PhD experiments from the DroughtNet site at Bad Lauchstädt Nico Eisenhauer talking us on a tour I'd the EcoTron facility at Bad Lauchstädt Standing under the canopy of the MyDiv experimental forest
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Wirth-Weigelt Research Group @agwirthweigelt.bsky.social · 08/08/2025
🌱 #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
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The Jena Experiment @jena-experiment.bsky.social · 17/07/2025
That's us in the picture! 🖼️ Read about diversity-stability relationships in biodiversity experiments such as ours in @natecoevo.nature.com
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Nature Ecology & Evolution @natecoevo.nature.com · 16/07/2025
Meng et al. develop a theoretical approach and show that empirical diversity–stability relationships in grasslands are best explained by species-specific dynamics rather than by interspecific interactions www.nature.com/articles/s41... 🧪
nature.com
Stabilizing effects of biodiversity arise from species-specific dynamics rather than interspecific interactions in grasslands - Nature Ecology & Evolution
The role of interspecific interactions in biodiversity–ecosystem stability relationships is unclear. Here the authors develop a theoretical approach and show that empirical diversity–stability relatio...
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The Jena Experiment @jena-experiment.bsky.social · 16/07/2025
👇Out in @oikosjournal.bsky.social New research from our Ecotron facility by @elisabethboenisch.bsky.social, @eisenhauerlab.bsky.social et al 🌱
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German Society for Plant Sciences (DBG) @plantsciencedbg.bsky.social · 10/07/2025
Wie Artenvielfalt der Landwirtschaft nützt und wie der Rückgang der #Biodiversität unsere Lebensgrundlagen bedroht, schildert Roland Schulz in seinem Artikel über das seit 18 Jahren laufende @jena-experiment.bsky.social im Tagesspiegel (€) www.tagesspiegel.de/wissen/das-j...
tagesspiegel.de
Das Jena-Experiment läuft seit 18 Jahren: Wie der Rückgang von Biodiversität unsere Lebensgrundlage bedroht
Im Jena-Experiment untersuchen Forschende, welche Folgen der Verlust biologischer Vielfalt für Ökosysteme hat. Dabei beobachten sie auch ein Phänomen, das sie „Social Distancing auf der Wiese“ nennen.
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Gerrit Angst @gangst.bsky.social · 01/07/2025
‼️Fresh out @natcomms.nature.com Un(der)explored links between #plant #diversity and #POM and #MAOM in soil nature.com/articles/s41... @idiv-research.bsky.social @eisenhauerlab.bsky.social @akademievedcr.bsky.social @charlesuni.cuni.cz @kevin-e-mueller.bsky.social
(c) The Jena Experiment
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iDiv Biodiversity Research @idiv-research.bsky.social · 02/07/2025
🌿 ☘️ 🌱 A new study shows plant diversity boosts soil carbon — especially in under-saturated ecosystems. Learn more about this study in a report by #iDiv's Dr. @gangst.bsky.social: www.idiv.de/plant-divers... @natcomms.nature.com @eisenhauerlab.bsky.social
idiv.de
Context matters: Plant diversity affects soil carbon storage differently across ecosystems
New publication in Nature Communications
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Robin Heinen @robinheinennl.bsky.social · 11/06/2025
My colleague Tanja and I had a flash visit to Jena today, where we sampled our chemodiversity field experiment. Tomorrow, we will start a new greenhouse experiment based on these samples. Hopefully more insights from this field very soon!
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The Jena Experiment @jena-experiment.bsky.social · 06/06/2025
Public broadcasting visited our experiment today to shoot a science education clip on #biodiversity Happy to contribute to "Planet Schule" #SWR & looking forward to seeing the finished clip soon 🌱🪲🪱
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Experimental Interaction Ecology @eisenhauerlab.bsky.social · 19/05/2025
Excited to share our new study published in JoVE! We explore how plant history and soil history influence the functioning of grassland ecosystems. Have a look! app.jove.com/v/67496/jena...
app.jove.com
JenaTron - An Experimental Approach to Study the Effects of Plant History and Soil History on Grassland Ecosystem Functioning
The global loss of biodiversity has motivated many studies that experimentally vary plant species richness and examine the consequences for ecosystem ...
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