Matthias C. Rillig
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mrillig.bsky.social
Matthias C. Rillig
@mrillig.bsky.social

Professor, ecology, FU Berlin, own views, book author
Global change, soil, fungi, environment, microplastic, biodiversity 🧪
https://www.youtube.com/@mrillig
https://www.youtube.com/@lifeinthesoil
rilliglab.org
https://matthiasrillig.substack.com .. more

Agriculture 35%
Environmental science 28%

Reposted by Matthias C. Rillig

Quick reminder that the upcoming revision of the REACH Regulation offers an opportunity to improve the protection of human health & the environment. Simply by acknowledging the fact that we all are routinely exposed to complex chemical mixtures.

New policy brief out in SCIENCE @science.org
Include a mixture allocation factor to improve EU chemical risk management
Revision of the REACH chemical regulation should enable more realistic understanding and management
www.doi.org

Thanks to everybody who finds our lab's work interesting enough to cite it!

I'm proud to be #HighlyCited in three different fields this year. My awesome lab and collaborators made it possible, thanks so much!

Paper just accepted:

Acid and antibiotic stress suppresses soil microbial carbon use efficiency via fungal proliferation: mechanistic insights from microbial community dynamics.

Another collab with friends at Fudan Univ (different ones)....
Will share details once available

Paper just accepted:

Multiple global change stressors boost soil greenhouse gas emissions worldwide

Will share details once available; a collaboration with friends at Fudan University & elsewhere

Paper just accepted:

Microplastic and drought influence the positive effect of plant diversity on plant biomass production

A collaboration among former 3 postdocs in my group. Will share details once available.

Paper just online:

Xiang et al.
Global Meta-Analysis Integrated with Machine Learning Assesses Context-Dependent Microplastic Effects on Soil Microbial Biomass Carbon and Nitrogen | Environmental Science & Technology

pubs.acs.org/doi/10.1021/...
Global Meta-Analysis Integrated with Machine Learning Assesses Context-Dependent Microplastic Effects on Soil Microbial Biomass Carbon and Nitrogen
Microplastics (MPs) in soil can paradoxically stimulate microbial biomass in a highly context-dependent manner, potentially inducing decomposition and affecting carbon and nitrogen cycles. We conducted a global meta-analysis with 90 studies (710 observations of microbial biomass carbon (MBC), 354 of microbial biomass nitrogen (MBN)) integrated with machine learning to quantify MPs effects on soil microbial biomass. Field studies showed no significant effects, contrasting with controlled experiments where MPs increased MBC by 9.6% (95% CI: 7.2–11.9%) and MBN by 10.4% (6.8–14.0%). Biodegradable plastics (PBAT, PLA) induced stronger effects (36.1–67.6%) than conventional polymers (PE, PP, PS, PVC). Temperature emerged as the dominant factor, with a contrasting MPs effect on MBC (positive) and MBN (negative) at higher temperatures, suggesting potential decoupling of carbon and nitrogen cycles under warming conditions. Machine learning models (XGBoost, R2 = 0.62) significantly outperformed linear regressions (R2 = 0.02–0.05), revealing nonlinear responses and threshold effects. Stimulatory effects were most significant for medium-sized MPs (30–90 μm), at high concentrations (>10 g kg–1), and in soils with intermediate fertility, highlighting context-dependent risks to soil carbon and nitrogen cycling.
pubs.acs.org

Paper just accepted:

Number and dissimilarity of soil amendments influence soil properties and plant communities in a greenhouse experiment

Will share open-access link once available

Paper just out @newphyt.bsky.social

Ajaz et al.
Maximum entropy networks show that plant–arbuscular mycorrhizal fungi associations are anti-nested and modular

w/ Tancredi Caruso

nph.onlinelibrary.wiley.com/doi/10.1111/...
Maximum entropy networks show that plant–arbuscular mycorrhizal fungi associations are anti‐nested and modular
There is uncertainty in whether there is a common pattern of nestedness and modularity in plant–arbuscular mycorrhizal (AM) fungi associations, partly because of limitations arising from the use of ...
nph.onlinelibrary.wiley.com

Reading in journal club:

Mitchener et al.
Kosmos: An AI Scientist for Autonomous Discovery

arxiv.org/abs/2511.02824
Kosmos: An AI Scientist for Autonomous Discovery
Data-driven scientific discovery requires iterative cycles of literature search, hypothesis generation, and data analysis. Substantial progress has been made towards AI agents that can automate scient...
arxiv.org

Enjoyed the presentation 'Chrysalis. Artists in Labs' today as part of Berlin Science Week.

Up on the stage also the lab's @alvarordr.bsky.social and artist Helena Nikonole, who gave a presentation on their planned interaction.

Organized by our friends at Art Laboratory Berlin.

My new substack newsletter for this week ponders 'tiny experiments' within universities to explore new ways of research, teaching and collaboration.

Could this work? do you know of any good examples?

matthiasrillig.substack.com/p/tiny-exper...
Tiny experiments within universities?
Can we establish a culture of experiments to try out new forms of collaboration, research, and teaching?
matthiasrillig.substack.com

OMG! 😵‍💫

Nice!

yes; we tried to apply it to the spectrum of work done in our lab, from work on single fungal cultures in Petri dishes, to more regional or global work, and many steps in between.

As a part of Berlin Science week, I look forward to the event "Chrysalis. Artists in Labs", also featuring our lab's @alvarordr.bsky.social and our artist-in-residence Helena Nikonole

berlinscienceweek.com/programme/ch...
CHRYSALIS. ARTISTS IN LABS
During 2025 and 2026, Art Laboratory Berlin is unfolding the new innovative project CHRYSALIS. ARTISTS IN LABS with an interdisciplinary exchange between art and science in Berlin science laboratories...
berlinscienceweek.com