César Marín
@cmarin.bsky.social
Professor of Soil Ecology at UST-Chile.
Assoc. Ed. npj Soil Ecology. Lead: South American Mycorrhizal Res. Network.
Editor: Fungal Ecology; IMA Fungus; Plant People Planet; J. Sust. Agric. Environ.
https://cesar-marin.com/
Assoc. Ed. npj Soil Ecology. Lead: South American Mycorrhizal Res. Network.
Editor: Fungal Ecology; IMA Fungus; Plant People Planet; J. Sust. Agric. Environ.
https://cesar-marin.com/
Reposted by César Marín
👀 Recordatorio! Mañana aprenderemos sobre suelos y micorrizas. No te lo pierdas!
👀 In case you missed it, tomorrow we’ll learn about soils and mycorrhizae. Join us!
👀 Passando pra avisar: amanhã aprenderemos sobre solos e micorrizas. Vem com a gente!
@ecologicalsociety.bsky.social #scicomm
👀 In case you missed it, tomorrow we’ll learn about soils and mycorrhizae. Join us!
👀 Passando pra avisar: amanhã aprenderemos sobre solos e micorrizas. Vem com a gente!
@ecologicalsociety.bsky.social #scicomm
We’re back from the holidays and excited to welcome you to our next Con-ciencia en las Américas webinar on soils and mycorrhizae with Drs. Adriana Corrales and César Marín.
🗓️Wed, Jan 21 | 12 PM ET
Register & send questions: forms.gle/WToZ9pAhMQYA...
🗓️Wed, Jan 21 | 12 PM ET
Register & send questions: forms.gle/WToZ9pAhMQYA...
January 21, 2026 at 2:53 PM
We have been growing a ton of Alerce (Fitzroya cuppresoides) for my Fondecyt Regular project with the help of CONAF. Its hard at the beginning but it is working
:)
:)
January 20, 2026 at 5:03 PM
We have been growing a ton of Alerce (Fitzroya cuppresoides) for my Fondecyt Regular project with the help of CONAF. Its hard at the beginning but it is working
:)
:)
Reposted by César Marín
🍄Transposon traffic in the mycocosmos🍄
Fascinating work reveals extensive horizontal TE transfer across fungi (@jromeijn.bsky.social, Iñigo Bañales & @mfseidl.bsky.social; doi.org/10.1016/j.cu...). I wrote a Dispatch to prime non-specialists,check it out here: doi.org/10.1016/j.cu....
#TEworldwide
Fascinating work reveals extensive horizontal TE transfer across fungi (@jromeijn.bsky.social, Iñigo Bañales & @mfseidl.bsky.social; doi.org/10.1016/j.cu...). I wrote a Dispatch to prime non-specialists,check it out here: doi.org/10.1016/j.cu....
#TEworldwide
January 19, 2026 at 4:38 PM
🍄Transposon traffic in the mycocosmos🍄
Fascinating work reveals extensive horizontal TE transfer across fungi (@jromeijn.bsky.social, Iñigo Bañales & @mfseidl.bsky.social; doi.org/10.1016/j.cu...). I wrote a Dispatch to prime non-specialists,check it out here: doi.org/10.1016/j.cu....
#TEworldwide
Fascinating work reveals extensive horizontal TE transfer across fungi (@jromeijn.bsky.social, Iñigo Bañales & @mfseidl.bsky.social; doi.org/10.1016/j.cu...). I wrote a Dispatch to prime non-specialists,check it out here: doi.org/10.1016/j.cu....
#TEworldwide
Dear friends. As said before, this is the most important article I have written. For 10 years I have been compiling empirical evidence of multilevel selection in the field and the lab. Here we summarize it with fantastic co-authors (all from zoology).
Release day: 10 February.
Release day: 10 February.
January 19, 2026 at 3:51 PM
Dear friends. As said before, this is the most important article I have written. For 10 years I have been compiling empirical evidence of multilevel selection in the field and the lab. Here we summarize it with fantastic co-authors (all from zoology).
Release day: 10 February.
Release day: 10 February.
Our #ICOM2024 workshop inspired this fantastic article by @mycorrhizanne.bsky.social from @balachaudhary.bsky.social lab.
I wonder what our @icom2026.bsky.social workshop on Analyzing cooperation/adaptation models (also cochaired with Nancy Johnson) will inspire. Join us with J. Hoeksema & J. Bever
I wonder what our @icom2026.bsky.social workshop on Analyzing cooperation/adaptation models (also cochaired with Nancy Johnson) will inspire. Join us with J. Hoeksema & J. Bever
Check out our new paper, Multilevel selection informs context-dependent mycorrhizal functioning! This is my very first first-authored publication, and I worked w some incredible folks to make it happen:
@meafkhami.bsky.social @balachaudhary.bsky.social
and Nancy Johnson!
doi.org/10.3389/frmb...
@meafkhami.bsky.social @balachaudhary.bsky.social
and Nancy Johnson!
doi.org/10.3389/frmb...
Frontiers | Multilevel selection theory informs context-dependent mycorrhizal functioning
Arbuscular mycorrhizal (AM) fungi form widespread, ancient, and critically important symbioses with plants, but their functioning and beneficial effects are ...
doi.org
January 16, 2026 at 4:16 PM
Our #ICOM2024 workshop inspired this fantastic article by @mycorrhizanne.bsky.social from @balachaudhary.bsky.social lab.
I wonder what our @icom2026.bsky.social workshop on Analyzing cooperation/adaptation models (also cochaired with Nancy Johnson) will inspire. Join us with J. Hoeksema & J. Bever
I wonder what our @icom2026.bsky.social workshop on Analyzing cooperation/adaptation models (also cochaired with Nancy Johnson) will inspire. Join us with J. Hoeksema & J. Bever
Elisabeth A. Lloyd & Michael J. Wade, represent, in my view, how you should work in biology:
A philosopher of science who deeply changed what we understand as adaptation & unit of selection + a quant. geneticist like no other: Mike showed empirically Wright’s phase III of shifting balance theory.
A philosopher of science who deeply changed what we understand as adaptation & unit of selection + a quant. geneticist like no other: Mike showed empirically Wright’s phase III of shifting balance theory.
January 16, 2026 at 3:20 PM
Elisabeth A. Lloyd & Michael J. Wade, represent, in my view, how you should work in biology:
A philosopher of science who deeply changed what we understand as adaptation & unit of selection + a quant. geneticist like no other: Mike showed empirically Wright’s phase III of shifting balance theory.
A philosopher of science who deeply changed what we understand as adaptation & unit of selection + a quant. geneticist like no other: Mike showed empirically Wright’s phase III of shifting balance theory.
Reposted by César Marín
🌱 NEW at #ICOM2026!
For the first time, we’re hosting an Early Career Researcher Symposium 🧫✨
📅 12 July 2026 | 📍 Cairns
🎤 Talks, panels, networking & awards
📝 Abstracts now open for students & ECRs (≤7 yrs post-degree)
👉 icom2026.org/ecr/
#Mycorrhiza #ICOM2026 @mycorrhizaims.bsky.social
For the first time, we’re hosting an Early Career Researcher Symposium 🧫✨
📅 12 July 2026 | 📍 Cairns
🎤 Talks, panels, networking & awards
📝 Abstracts now open for students & ECRs (≤7 yrs post-degree)
👉 icom2026.org/ecr/
#Mycorrhiza #ICOM2026 @mycorrhizaims.bsky.social
January 15, 2026 at 6:56 AM
🌱 NEW at #ICOM2026!
For the first time, we’re hosting an Early Career Researcher Symposium 🧫✨
📅 12 July 2026 | 📍 Cairns
🎤 Talks, panels, networking & awards
📝 Abstracts now open for students & ECRs (≤7 yrs post-degree)
👉 icom2026.org/ecr/
#Mycorrhiza #ICOM2026 @mycorrhizaims.bsky.social
For the first time, we’re hosting an Early Career Researcher Symposium 🧫✨
📅 12 July 2026 | 📍 Cairns
🎤 Talks, panels, networking & awards
📝 Abstracts now open for students & ECRs (≤7 yrs post-degree)
👉 icom2026.org/ecr/
#Mycorrhiza #ICOM2026 @mycorrhizaims.bsky.social
No doubt this is the most important paper I have written: “Abundant empirical evidence of multilevel selection revealed by a bibliometric review”.
Since Wade 1976, PNAS, we found 280 papers showing natural selection acting at the same time at two levels.
www.frontiersin.org/journals/eco...
Since Wade 1976, PNAS, we found 280 papers showing natural selection acting at the same time at two levels.
www.frontiersin.org/journals/eco...
Frontiers | Abundant empirical evidence of multilevel selection revealed by a bibliometric review
Natural selection is based on the concept of differential reproduction between entities, often characterized as a struggle between individual organisms. Howe...
www.frontiersin.org
January 14, 2026 at 1:18 PM
No doubt this is the most important paper I have written: “Abundant empirical evidence of multilevel selection revealed by a bibliometric review”.
Since Wade 1976, PNAS, we found 280 papers showing natural selection acting at the same time at two levels.
www.frontiersin.org/journals/eco...
Since Wade 1976, PNAS, we found 280 papers showing natural selection acting at the same time at two levels.
www.frontiersin.org/journals/eco...
A first for me. Bastian Matte just sussecfully defended his BSc thesis at U. Chile, and his co-director was Javiera Rubio, previously supervised by me as well.
Bastian had the highest grade, congrats! Very proud!
Bastian had the highest grade, congrats! Very proud!
January 13, 2026 at 2:34 PM
A first for me. Bastian Matte just sussecfully defended his BSc thesis at U. Chile, and his co-director was Javiera Rubio, previously supervised by me as well.
Bastian had the highest grade, congrats! Very proud!
Bastian had the highest grade, congrats! Very proud!
Reposted by César Marín
Check out our new paper, Multilevel selection informs context-dependent mycorrhizal functioning! This is my very first first-authored publication, and I worked w some incredible folks to make it happen:
@meafkhami.bsky.social @balachaudhary.bsky.social
and Nancy Johnson!
doi.org/10.3389/frmb...
@meafkhami.bsky.social @balachaudhary.bsky.social
and Nancy Johnson!
doi.org/10.3389/frmb...
Frontiers | Multilevel selection theory informs context-dependent mycorrhizal functioning
Arbuscular mycorrhizal (AM) fungi form widespread, ancient, and critically important symbioses with plants, but their functioning and beneficial effects are ...
doi.org
January 5, 2026 at 1:02 PM
Check out our new paper, Multilevel selection informs context-dependent mycorrhizal functioning! This is my very first first-authored publication, and I worked w some incredible folks to make it happen:
@meafkhami.bsky.social @balachaudhary.bsky.social
and Nancy Johnson!
doi.org/10.3389/frmb...
@meafkhami.bsky.social @balachaudhary.bsky.social
and Nancy Johnson!
doi.org/10.3389/frmb...
Just got accepted a VERY important paper:
Marín C, Clark AB, Philson CS, Eldakar OT, Wade MJ. 2026. Abundant empirical evidence of multilevel selection revealed by a bibliometric review. Frontiers Ecol Evol.
Since Wade 1976 PNAS, we found 280 papers of multilevel sel. evidence.
#evolution #life
Marín C, Clark AB, Philson CS, Eldakar OT, Wade MJ. 2026. Abundant empirical evidence of multilevel selection revealed by a bibliometric review. Frontiers Ecol Evol.
Since Wade 1976 PNAS, we found 280 papers of multilevel sel. evidence.
#evolution #life
January 8, 2026 at 9:49 AM
Just got accepted a VERY important paper:
Marín C, Clark AB, Philson CS, Eldakar OT, Wade MJ. 2026. Abundant empirical evidence of multilevel selection revealed by a bibliometric review. Frontiers Ecol Evol.
Since Wade 1976 PNAS, we found 280 papers of multilevel sel. evidence.
#evolution #life
Marín C, Clark AB, Philson CS, Eldakar OT, Wade MJ. 2026. Abundant empirical evidence of multilevel selection revealed by a bibliometric review. Frontiers Ecol Evol.
Since Wade 1976 PNAS, we found 280 papers of multilevel sel. evidence.
#evolution #life
The last peer-reviewed article by Dawkins seems to be from 2004. He is a celebrity (he even charges for dinner with him, lol), not an active Evolutionary biologist. Thus how is even possible his opinion represents the field? Furthermore, when there are MANY active Evol. Biol studying this topic.
Hey, fellow evolutionary biologists:
If you support trans rights, like, comment, or repost this. I want to show that transphobes like Richard Dawkins are a loud minority that does not represent our community
If you support trans rights, like, comment, or repost this. I want to show that transphobes like Richard Dawkins are a loud minority that does not represent our community
And that’s a follow.
Actually I do have a question if you have a sec.
Without exception the most transphobic group of scientists I’ve run into online are evolutionary biologists. Every single one of them has expressed the same opinion: transness cannot be anything other than social contagion. Why?
Actually I do have a question if you have a sec.
Without exception the most transphobic group of scientists I’ve run into online are evolutionary biologists. Every single one of them has expressed the same opinion: transness cannot be anything other than social contagion. Why?
December 23, 2025 at 2:43 AM
The last peer-reviewed article by Dawkins seems to be from 2004. He is a celebrity (he even charges for dinner with him, lol), not an active Evolutionary biologist. Thus how is even possible his opinion represents the field? Furthermore, when there are MANY active Evol. Biol studying this topic.
Desde @southmycorrhiza hemos liberado online este curso de 7 horas sobre Micorrizas, incluyendo a Pablo-García Parisi, Paula Aguilera, y Nahuel Policelli como instructores, con más de 100 estudiantes conectados.
#mycorrhiza #fungi #soil
youtu.be/Ng-jXTvopWM?...
#mycorrhiza #fungi #soil
youtu.be/Ng-jXTvopWM?...
December 18, 2025 at 3:51 PM
Desde @southmycorrhiza hemos liberado online este curso de 7 horas sobre Micorrizas, incluyendo a Pablo-García Parisi, Paula Aguilera, y Nahuel Policelli como instructores, con más de 100 estudiantes conectados.
#mycorrhiza #fungi #soil
youtu.be/Ng-jXTvopWM?...
#mycorrhiza #fungi #soil
youtu.be/Ng-jXTvopWM?...
Reposted by César Marín
Thanks to @SarahCuprewich ( @balachaudhary.bsky.social lab) for this great @southmycorrhiza / @mycorrhizaims.bsky.social interview to me & #NancyCJohnson about our @isme-microbes.bsky.social paper on ‘Functional Team Selection’ where we discuss 🌱 #holobiont #mycorrhiza
youtu.be/nYH19EtX_C0?...
youtu.be/nYH19EtX_C0?...
December 15, 2025 at 1:45 PM
Thanks to @SarahCuprewich ( @balachaudhary.bsky.social lab) for this great @southmycorrhiza / @mycorrhizaims.bsky.social interview to me & #NancyCJohnson about our @isme-microbes.bsky.social paper on ‘Functional Team Selection’ where we discuss 🌱 #holobiont #mycorrhiza
youtu.be/nYH19EtX_C0?...
youtu.be/nYH19EtX_C0?...
Thanks to @SarahCuprewich ( @balachaudhary.bsky.social lab) for this great @southmycorrhiza / @mycorrhizaims.bsky.social interview to me & #NancyCJohnson about our @isme-microbes.bsky.social paper on ‘Functional Team Selection’ where we discuss 🌱 #holobiont #mycorrhiza
youtu.be/nYH19EtX_C0?...
youtu.be/nYH19EtX_C0?...
December 15, 2025 at 1:45 PM
Thanks to @SarahCuprewich ( @balachaudhary.bsky.social lab) for this great @southmycorrhiza / @mycorrhizaims.bsky.social interview to me & #NancyCJohnson about our @isme-microbes.bsky.social paper on ‘Functional Team Selection’ where we discuss 🌱 #holobiont #mycorrhiza
youtu.be/nYH19EtX_C0?...
youtu.be/nYH19EtX_C0?...
From a deep molecular knowledge in the case of Denis and a deep evolution knowledge in the case of David, both have concluded that ‘selfish genes’ is a terrible way of thinking about evolutionary change.
Just ordered this book.
Just ordered this book.
December 13, 2025 at 7:04 PM
From a deep molecular knowledge in the case of Denis and a deep evolution knowledge in the case of David, both have concluded that ‘selfish genes’ is a terrible way of thinking about evolutionary change.
Just ordered this book.
Just ordered this book.
🤩 🙌 #preprint alert!
At @ecoevorxiv.bsky.social
we report: Godoy et al. 2025: “Spores of arbuscular mycorrhizal fungi inhabiting inside mossballs of Rigodium implexum”.
This moss species forms 10-20 cm unattached, globosse balls. We found 4 #AMF species inside.
#fungi
doi.org/10.32942/X2S...
At @ecoevorxiv.bsky.social
we report: Godoy et al. 2025: “Spores of arbuscular mycorrhizal fungi inhabiting inside mossballs of Rigodium implexum”.
This moss species forms 10-20 cm unattached, globosse balls. We found 4 #AMF species inside.
#fungi
doi.org/10.32942/X2S...
December 12, 2025 at 11:20 AM
🤩 🙌 #preprint alert!
At @ecoevorxiv.bsky.social
we report: Godoy et al. 2025: “Spores of arbuscular mycorrhizal fungi inhabiting inside mossballs of Rigodium implexum”.
This moss species forms 10-20 cm unattached, globosse balls. We found 4 #AMF species inside.
#fungi
doi.org/10.32942/X2S...
At @ecoevorxiv.bsky.social
we report: Godoy et al. 2025: “Spores of arbuscular mycorrhizal fungi inhabiting inside mossballs of Rigodium implexum”.
This moss species forms 10-20 cm unattached, globosse balls. We found 4 #AMF species inside.
#fungi
doi.org/10.32942/X2S...
Two papers just accepted:
- “Large trees dominate carbon storage in the forests of the Peruvian Amazon”.
- “Organic amendments as a tool to restore soil microbial diversity after wildfires in native Mediterranean forests”.
Nice.
- “Large trees dominate carbon storage in the forests of the Peruvian Amazon”.
- “Organic amendments as a tool to restore soil microbial diversity after wildfires in native Mediterranean forests”.
Nice.
December 11, 2025 at 1:28 PM
Two papers just accepted:
- “Large trees dominate carbon storage in the forests of the Peruvian Amazon”.
- “Organic amendments as a tool to restore soil microbial diversity after wildfires in native Mediterranean forests”.
Nice.
- “Large trees dominate carbon storage in the forests of the Peruvian Amazon”.
- “Organic amendments as a tool to restore soil microbial diversity after wildfires in native Mediterranean forests”.
Nice.
Reposted by César Marín
Reposted by César Marín
I wrote a piece for Marginalia Review of Books, based on a talk earlier this year, about the role of narratives in science - something that I think deserves more attention than it gets.
www.marginaliareviewofbooks.com/post/theory-...
www.marginaliareviewofbooks.com/post/theory-...
Theory, Metaphor, Narrative: How Science Creates the Stories it Tells
PHILIP BALL | Science is often not a competition between theories but a process of narrative creation in which the paradigm tends to be set by the most persuasive narrative
www.marginaliareviewofbooks.com
December 8, 2025 at 9:52 PM
I wrote a piece for Marginalia Review of Books, based on a talk earlier this year, about the role of narratives in science - something that I think deserves more attention than it gets.
www.marginaliareviewofbooks.com/post/theory-...
www.marginaliareviewofbooks.com/post/theory-...
Reposted by César Marín
New Species Spotlight 👇
César Marín @cmarin.bsky.social feels privileged to work among giants like the conifer Fitzroya cupressoides www.nature.com/articles/s41...
Free to read: rdcu.be/eQMnK
César Marín @cmarin.bsky.social feels privileged to work among giants like the conifer Fitzroya cupressoides www.nature.com/articles/s41...
Free to read: rdcu.be/eQMnK
Alerce or lawal (Fitzroya cupressoides) - Nature Ecology & Evolution
César Marín feels privileged to work among giants.
www.nature.com
November 19, 2025 at 3:28 PM
New Species Spotlight 👇
César Marín @cmarin.bsky.social feels privileged to work among giants like the conifer Fitzroya cupressoides www.nature.com/articles/s41...
Free to read: rdcu.be/eQMnK
César Marín @cmarin.bsky.social feels privileged to work among giants like the conifer Fitzroya cupressoides www.nature.com/articles/s41...
Free to read: rdcu.be/eQMnK
Congrats to my recent co-author André Geremia, who recently got his PhD. From that I value A LOT:
- Great publication record from the thesis & extra.
- Work in a “polemic” topic (not really) such as plant cognition.
- They published 2 papers with negative results on that topic.
- Great publication record from the thesis & extra.
- Work in a “polemic” topic (not really) such as plant cognition.
- They published 2 papers with negative results on that topic.
November 27, 2025 at 5:03 PM
Congrats to my recent co-author André Geremia, who recently got his PhD. From that I value A LOT:
- Great publication record from the thesis & extra.
- Work in a “polemic” topic (not really) such as plant cognition.
- They published 2 papers with negative results on that topic.
- Great publication record from the thesis & extra.
- Work in a “polemic” topic (not really) such as plant cognition.
- They published 2 papers with negative results on that topic.
Reposted by César Marín
New online! Building on monitoring and conservation policies for global soil biodiversity
Building on monitoring and conservation policies for global soil biodiversity
Nature Reviews Biodiversity, Published online: 25 November 2025; doi:10.1038/s44358-025-00108-yAlthough long neglected in biodiversity conservation policy, the importance of soil biodiversity is now recognized by the Kunming-Montreal Global Biodiversity Framework. This Perspective describes this important policy breakthrough and offers strategies to build on it for successful monitoring and conservation outcomes.
bit.ly
November 25, 2025 at 3:58 PM
New online! Building on monitoring and conservation policies for global soil biodiversity
2025 has been a good year, with 9 peer-reviewed articles published and 10 under review.
cesar-marin.com/publications/
cesar-marin.com/publications/
November 24, 2025 at 6:36 PM
2025 has been a good year, with 9 peer-reviewed articles published and 10 under review.
cesar-marin.com/publications/
cesar-marin.com/publications/
The 17 Newsletter of @mycorrhizaims.bsky.social is out now!
mycorrhizas.org/news/
It includes @YouTube interviews with @mrillig.bsky.social
@beaboxk @smriti-pehim-limbu.bsky.social .
Tools by #CamilleDelavaux & @ManjuMGupta Top 10 mycorrhizal papers. @ICOM2026 info & more!
@southmycorrhiza
mycorrhizas.org/news/
It includes @YouTube interviews with @mrillig.bsky.social
@beaboxk @smriti-pehim-limbu.bsky.social .
Tools by #CamilleDelavaux & @ManjuMGupta Top 10 mycorrhizal papers. @ICOM2026 info & more!
@southmycorrhiza
November 20, 2025 at 11:30 AM
The 17 Newsletter of @mycorrhizaims.bsky.social is out now!
mycorrhizas.org/news/
It includes @YouTube interviews with @mrillig.bsky.social
@beaboxk @smriti-pehim-limbu.bsky.social .
Tools by #CamilleDelavaux & @ManjuMGupta Top 10 mycorrhizal papers. @ICOM2026 info & more!
@southmycorrhiza
mycorrhizas.org/news/
It includes @YouTube interviews with @mrillig.bsky.social
@beaboxk @smriti-pehim-limbu.bsky.social .
Tools by #CamilleDelavaux & @ManjuMGupta Top 10 mycorrhizal papers. @ICOM2026 info & more!
@southmycorrhiza