César Marín
@cmarin.bsky.social
Professor of Soil Ecology at UST-Chile.
Editor-in-Chief Intl. Mycorrhiza Society Newsletter. Lead: South American Mycorrhizal Res. Network.
Editor: Fungal Ecology; IMA Fungus; Plant People Planet; J. Sust. Agric. Environ.
https://cesar-marin.com/
Editor-in-Chief Intl. Mycorrhiza Society Newsletter. Lead: South American Mycorrhizal Res. Network.
Editor: Fungal Ecology; IMA Fungus; Plant People Planet; J. Sust. Agric. Environ.
https://cesar-marin.com/
Very happy to write this Species spotlight for #Nature Ecol. Evol. about our beloved Alerce.
Its been a huge privilige to work with this #AMF conifer for many years now.
Thx to the E-i-C for the invite & Mateo Barrenengoa for the pic.
#Alerce #Mycorrhiza #Chile
cesar-marin.com/publications/
Its been a huge privilige to work with this #AMF conifer for many years now.
Thx to the E-i-C for the invite & Mateo Barrenengoa for the pic.
#Alerce #Mycorrhiza #Chile
cesar-marin.com/publications/
November 11, 2025 at 2:19 PM
Very happy to write this Species spotlight for #Nature Ecol. Evol. about our beloved Alerce.
Its been a huge privilige to work with this #AMF conifer for many years now.
Thx to the E-i-C for the invite & Mateo Barrenengoa for the pic.
#Alerce #Mycorrhiza #Chile
cesar-marin.com/publications/
Its been a huge privilige to work with this #AMF conifer for many years now.
Thx to the E-i-C for the invite & Mateo Barrenengoa for the pic.
#Alerce #Mycorrhiza #Chile
cesar-marin.com/publications/
I teach a guest class in a BSc Evolution class, about Units of Selection. My first question to the students is about their definition of evolution. It almost always involves alleles.
A phenotype-based def. of Evolution must include several other factors that affect trait expres. & popul. composition
A phenotype-based def. of Evolution must include several other factors that affect trait expres. & popul. composition
November 4, 2025 at 11:19 AM
I teach a guest class in a BSc Evolution class, about Units of Selection. My first question to the students is about their definition of evolution. It almost always involves alleles.
A phenotype-based def. of Evolution must include several other factors that affect trait expres. & popul. composition
A phenotype-based def. of Evolution must include several other factors that affect trait expres. & popul. composition
I have been inspired by David Sloan Wilson writing since I was 18 years old (2009). Recently spend a week with him, his wife Anne, & Nancy Johnson in Arizona.
David told me Im a pretty good writer. I value that more than all the awards I have received. David is way ahead!
David told me Im a pretty good writer. I value that more than all the awards I have received. David is way ahead!
October 27, 2025 at 6:04 PM
I have been inspired by David Sloan Wilson writing since I was 18 years old (2009). Recently spend a week with him, his wife Anne, & Nancy Johnson in Arizona.
David told me Im a pretty good writer. I value that more than all the awards I have received. David is way ahead!
David told me Im a pretty good writer. I value that more than all the awards I have received. David is way ahead!
It is such an honor to be 1 of the 3 keynotes at the @gsb2026.bsky.social
organized by @thegsbi.bsky.social
next year in Victoria, Canada. Particularly nice to be in such good company!
Ill be talking about Soil biodiversity networking from the global south; mycorrhizal natural selection; and more!
organized by @thegsbi.bsky.social
next year in Victoria, Canada. Particularly nice to be in such good company!
Ill be talking about Soil biodiversity networking from the global south; mycorrhizal natural selection; and more!
October 23, 2025 at 3:09 PM
It is such an honor to be 1 of the 3 keynotes at the @gsb2026.bsky.social
organized by @thegsbi.bsky.social
next year in Victoria, Canada. Particularly nice to be in such good company!
Ill be talking about Soil biodiversity networking from the global south; mycorrhizal natural selection; and more!
organized by @thegsbi.bsky.social
next year in Victoria, Canada. Particularly nice to be in such good company!
Ill be talking about Soil biodiversity networking from the global south; mycorrhizal natural selection; and more!
Other genes (hundreds of them even) in the genome influence a gene’s effect on phenotype.
Even other genes in other individuals also have effects on a focal individual gene effects and fitness.
There is tones of evidence on this. Why we keep teaching 1-1 or few-1 genotype-phenotype relationships?
Even other genes in other individuals also have effects on a focal individual gene effects and fitness.
There is tones of evidence on this. Why we keep teaching 1-1 or few-1 genotype-phenotype relationships?
October 18, 2025 at 4:32 PM
Other genes (hundreds of them even) in the genome influence a gene’s effect on phenotype.
Even other genes in other individuals also have effects on a focal individual gene effects and fitness.
There is tones of evidence on this. Why we keep teaching 1-1 or few-1 genotype-phenotype relationships?
Even other genes in other individuals also have effects on a focal individual gene effects and fitness.
There is tones of evidence on this. Why we keep teaching 1-1 or few-1 genotype-phenotype relationships?
Bought these four books. One by my co-author Mike Wade. Two by my friend/mentor (in a way), David Sloan Wilson, and The Dialectical Biologisr by Levins & Lewontin.
October 17, 2025 at 4:22 PM
Bought these four books. One by my co-author Mike Wade. Two by my friend/mentor (in a way), David Sloan Wilson, and The Dialectical Biologisr by Levins & Lewontin.
Check out preprintwatch.com to see the degree of disruption of your research.
Im glad Kuhn framework is fully used here.
My recent ISME J paper with Nancy Collins Johnson was deemed as ‘Model revolution’.
Indeed.
Im glad Kuhn framework is fully used here.
My recent ISME J paper with Nancy Collins Johnson was deemed as ‘Model revolution’.
Indeed.
October 15, 2025 at 1:03 PM
Check out preprintwatch.com to see the degree of disruption of your research.
Im glad Kuhn framework is fully used here.
My recent ISME J paper with Nancy Collins Johnson was deemed as ‘Model revolution’.
Indeed.
Im glad Kuhn framework is fully used here.
My recent ISME J paper with Nancy Collins Johnson was deemed as ‘Model revolution’.
Indeed.
New #Preprint: “Migration should be a personal choice, not the only one – a reflection on scientific diasporas”, published in #ARPHA preprints @pensoft.net
Here we discuss how scientific diaporas have operated so far & how to make them Functional!
doi.org/10.3897/arph...
Here we discuss how scientific diaporas have operated so far & how to make them Functional!
doi.org/10.3897/arph...
October 13, 2025 at 10:34 AM
New #Preprint: “Migration should be a personal choice, not the only one – a reflection on scientific diasporas”, published in #ARPHA preprints @pensoft.net
Here we discuss how scientific diaporas have operated so far & how to make them Functional!
doi.org/10.3897/arph...
Here we discuss how scientific diaporas have operated so far & how to make them Functional!
doi.org/10.3897/arph...
Julia Chuñil was a Mapuche environmental leader, who fought for the forests of Máfil 🇨🇱 , where my lab is located. She attended some agronomic training my work place did in the past.
Its been 11 months since she disseapeared. In a call, a forestry bussinesman recognizes “she was burned”.
Devastating!
Its been 11 months since she disseapeared. In a call, a forestry bussinesman recognizes “she was burned”.
Devastating!
October 1, 2025 at 11:10 AM
Julia Chuñil was a Mapuche environmental leader, who fought for the forests of Máfil 🇨🇱 , where my lab is located. She attended some agronomic training my work place did in the past.
Its been 11 months since she disseapeared. In a call, a forestry bussinesman recognizes “she was burned”.
Devastating!
Its been 11 months since she disseapeared. In a call, a forestry bussinesman recognizes “she was burned”.
Devastating!
Publishing in Spanish and getting a decent amount of citations is something to be especially proud.
Publica en español.
Publica en español.
September 29, 2025 at 6:42 PM
Publishing in Spanish and getting a decent amount of citations is something to be especially proud.
Publica en español.
Publica en español.
Im so happy to have ‘older’ (just in age, younger in spirit) collaborators/mentors on the different topics I work. They care about the right, deep stuff!
Nancy Collins Johnson, David Sloan Wilson, Roberto Godoy, Jacob Weiner, Elisabeth A. Lloyd, & Michel J. Wade.
Nancy Collins Johnson, David Sloan Wilson, Roberto Godoy, Jacob Weiner, Elisabeth A. Lloyd, & Michel J. Wade.
September 23, 2025 at 1:05 PM
Im so happy to have ‘older’ (just in age, younger in spirit) collaborators/mentors on the different topics I work. They care about the right, deep stuff!
Nancy Collins Johnson, David Sloan Wilson, Roberto Godoy, Jacob Weiner, Elisabeth A. Lloyd, & Michel J. Wade.
Nancy Collins Johnson, David Sloan Wilson, Roberto Godoy, Jacob Weiner, Elisabeth A. Lloyd, & Michel J. Wade.
Got to meet in person 2 academic heroes: Elisabeth A. Lloyd (I wrote a book review on her & Javi Suarez recent ‘Units of Selection’, for #Evolution), & Mike Wade, recent co-author (‘Bring back the phenotype’, for @newphyt.bsky.social), & author of the 1st multilevel selection empirical paper (1976)
September 22, 2025 at 10:18 AM
Got to meet in person 2 academic heroes: Elisabeth A. Lloyd (I wrote a book review on her & Javi Suarez recent ‘Units of Selection’, for #Evolution), & Mike Wade, recent co-author (‘Bring back the phenotype’, for @newphyt.bsky.social), & author of the 1st multilevel selection empirical paper (1976)
Its been 17 years since my dad was killed in Cauca, Colombia, for his farmer union leadership, fighting for land rights for the farmers who actually work the land.
We are still waiting for answers & justice!
We are still waiting for answers & justice!
September 21, 2025 at 2:15 PM
Its been 17 years since my dad was killed in Cauca, Colombia, for his farmer union leadership, fighting for land rights for the farmers who actually work the land.
We are still waiting for answers & justice!
We are still waiting for answers & justice!
Im glad our preprint entitled “Global North-South science inequalities due to language and funding barriers” already has some few citations. We have an updated version at #ZENODO:
doi.org/10.5281/zeno...
#GlobalSouth #Science #academia #OpenAccess #colonization
doi.org/10.5281/zeno...
#GlobalSouth #Science #academia #OpenAccess #colonization
September 19, 2025 at 12:34 PM
Im glad our preprint entitled “Global North-South science inequalities due to language and funding barriers” already has some few citations. We have an updated version at #ZENODO:
doi.org/10.5281/zeno...
#GlobalSouth #Science #academia #OpenAccess #colonization
doi.org/10.5281/zeno...
#GlobalSouth #Science #academia #OpenAccess #colonization
🎉 It was great to interview Bea Bock on her @CommsBio paper: “Evidence for common fungal networks among plants formed by a Dark Septate Endophyte in Sorghum bicolor”, for the SAMRN @YouTube channel & @mycorrhizaims.bsky.social Newsletter:
#Fungi @mrillig.bsky.social #CFN
youtu.be/2fljqU3uXtw?...
#Fungi @mrillig.bsky.social #CFN
youtu.be/2fljqU3uXtw?...
September 18, 2025 at 5:17 PM
🎉 It was great to interview Bea Bock on her @CommsBio paper: “Evidence for common fungal networks among plants formed by a Dark Septate Endophyte in Sorghum bicolor”, for the SAMRN @YouTube channel & @mycorrhizaims.bsky.social Newsletter:
#Fungi @mrillig.bsky.social #CFN
youtu.be/2fljqU3uXtw?...
#Fungi @mrillig.bsky.social #CFN
youtu.be/2fljqU3uXtw?...
This Fungal Ecology ed. cites my 🇪🇸 paper entitled “Filosofía Fungi” written with #JavierSuárez.
There we used Okasha (2024) agency clasif. to argue that there should not be problem on saying Fungi are minimal & intelligent agents. They are not intentional. Are they rational agents? Open question!
There we used Okasha (2024) agency clasif. to argue that there should not be problem on saying Fungi are minimal & intelligent agents. They are not intentional. Are they rational agents? Open question!
September 17, 2025 at 6:33 PM
This Fungal Ecology ed. cites my 🇪🇸 paper entitled “Filosofía Fungi” written with #JavierSuárez.
There we used Okasha (2024) agency clasif. to argue that there should not be problem on saying Fungi are minimal & intelligent agents. They are not intentional. Are they rational agents? Open question!
There we used Okasha (2024) agency clasif. to argue that there should not be problem on saying Fungi are minimal & intelligent agents. They are not intentional. Are they rational agents? Open question!
Im writing a book chapter on multilevel
Selection on the microbiome.
All these articles had sucess on artificial community selection towards a desired community phenotype.
It is quite something!
Selection on the microbiome.
All these articles had sucess on artificial community selection towards a desired community phenotype.
It is quite something!
September 17, 2025 at 2:33 PM
Im writing a book chapter on multilevel
Selection on the microbiome.
All these articles had sucess on artificial community selection towards a desired community phenotype.
It is quite something!
Selection on the microbiome.
All these articles had sucess on artificial community selection towards a desired community phenotype.
It is quite something!
It feels quite great when your academic hero, David Sloan Wilson, who you read since 2009 (I was 18 then), includes you in one of his slides.
My first multilevel selection paper is from 2015, the first mycorrhizal one from 2016. And just last year and this year we are joining both!
My first multilevel selection paper is from 2015, the first mycorrhizal one from 2016. And just last year and this year we are joining both!
September 16, 2025 at 5:27 PM
It feels quite great when your academic hero, David Sloan Wilson, who you read since 2009 (I was 18 then), includes you in one of his slides.
My first multilevel selection paper is from 2015, the first mycorrhizal one from 2016. And just last year and this year we are joining both!
My first multilevel selection paper is from 2015, the first mycorrhizal one from 2016. And just last year and this year we are joining both!
After 16 reading him, finally got to meet David Sloan Wilson. David has been foundational on multilevel selection (MLS) since 1975, collaborating with E.O. Wilson, Nobel laurate Elinor Ostrom, etc.
That happened with Nancy Collins Johnson is the 🍒 in the 🍰
Mycorrhiza + MLS
That happened with Nancy Collins Johnson is the 🍒 in the 🍰
Mycorrhiza + MLS
September 14, 2025 at 3:24 PM
After 16 reading him, finally got to meet David Sloan Wilson. David has been foundational on multilevel selection (MLS) since 1975, collaborating with E.O. Wilson, Nobel laurate Elinor Ostrom, etc.
That happened with Nancy Collins Johnson is the 🍒 in the 🍰
Mycorrhiza + MLS
That happened with Nancy Collins Johnson is the 🍒 in the 🍰
Mycorrhiza + MLS
If you adopt a phenotypic view of evolution (as I did on this @newphyt.bsky.social: doi.org/10.1111/nph....)
there is room for many evolutionary factors often ignored.
Evolution should be defined as “Change in the distribution of phenotypes due to the gain or loss of individuals”.
there is room for many evolutionary factors often ignored.
Evolution should be defined as “Change in the distribution of phenotypes due to the gain or loss of individuals”.
September 9, 2025 at 8:00 PM
If you adopt a phenotypic view of evolution (as I did on this @newphyt.bsky.social: doi.org/10.1111/nph....)
there is room for many evolutionary factors often ignored.
Evolution should be defined as “Change in the distribution of phenotypes due to the gain or loss of individuals”.
there is room for many evolutionary factors often ignored.
Evolution should be defined as “Change in the distribution of phenotypes due to the gain or loss of individuals”.
These are the conclusions of my seminar “Abundant empirical evidence of multilevel selection revealed by a bibliometric review”, based on the @ecoevorxiv.bsky.social #preprint of the same title. Presenting it now at Northern Arizona University, in Flagstaff.
doi.org/10.32942/X25...
doi.org/10.32942/X25...
September 8, 2025 at 7:25 PM
These are the conclusions of my seminar “Abundant empirical evidence of multilevel selection revealed by a bibliometric review”, based on the @ecoevorxiv.bsky.social #preprint of the same title. Presenting it now at Northern Arizona University, in Flagstaff.
doi.org/10.32942/X25...
doi.org/10.32942/X25...
This paper was so important and it took so much effort to get it out there, that I print it. Is the first time I print something that I have written.
And took a photo, of course.
And took a photo, of course.
September 5, 2025 at 9:16 PM
This paper was so important and it took so much effort to get it out there, that I print it. Is the first time I print something that I have written.
And took a photo, of course.
And took a photo, of course.
Final PDF of Functional Team Selection, written with #NancyCollinsJohnson published in @isme-microbes.bsky.social Journal:
- If there is: selective force, host constitution, & enough microbial diversity/time, a + PSF is likely
- Plant #holobiont is a complex adaptive system
doi.org/10.1093/isme...
- If there is: selective force, host constitution, & enough microbial diversity/time, a + PSF is likely
- Plant #holobiont is a complex adaptive system
doi.org/10.1093/isme...
September 4, 2025 at 3:53 PM
Final PDF of Functional Team Selection, written with #NancyCollinsJohnson published in @isme-microbes.bsky.social Journal:
- If there is: selective force, host constitution, & enough microbial diversity/time, a + PSF is likely
- Plant #holobiont is a complex adaptive system
doi.org/10.1093/isme...
- If there is: selective force, host constitution, & enough microbial diversity/time, a + PSF is likely
- Plant #holobiont is a complex adaptive system
doi.org/10.1093/isme...
It was great to interview Bea Bock on her @CommsBio paper: “Evidence for common fungal networks among plants formed by a Dark Septate Endophyte in Sorghum bicolor”, for the @mycorrhiza_ims @YouTube channel & @mycorrhiza_ims Newsletter
@mrillig.bsky.social
youtu.be/2fljqU3uXtw?...
@mrillig.bsky.social
youtu.be/2fljqU3uXtw?...
September 3, 2025 at 4:01 PM
It was great to interview Bea Bock on her @CommsBio paper: “Evidence for common fungal networks among plants formed by a Dark Septate Endophyte in Sorghum bicolor”, for the @mycorrhiza_ims @YouTube channel & @mycorrhiza_ims Newsletter
@mrillig.bsky.social
youtu.be/2fljqU3uXtw?...
@mrillig.bsky.social
youtu.be/2fljqU3uXtw?...
This is the second seminar that Ill give while at my research stay at #NAU in Flagstaff (the other one is mycorrhizal, of course).
This @ecoevorxiv.bsky.social
#preprint is the base for this seminar:
ecoevorxiv.org/repository/v...
This @ecoevorxiv.bsky.social
#preprint is the base for this seminar:
ecoevorxiv.org/repository/v...
September 2, 2025 at 7:03 PM
This is the second seminar that Ill give while at my research stay at #NAU in Flagstaff (the other one is mycorrhizal, of course).
This @ecoevorxiv.bsky.social
#preprint is the base for this seminar:
ecoevorxiv.org/repository/v...
This @ecoevorxiv.bsky.social
#preprint is the base for this seminar:
ecoevorxiv.org/repository/v...