Jeffrey Ross-Ibarra
@jrossibarra.bsky.social
evolutionary genomics of maize and wild relatives. erstwhile ethnobotanist. purveyor of bad puns. dad. prof and HPC director at UC Davis. not actually a cool cow from 1994. rilab.ucdavis.edu. views, especially bad ones, mine only (he/him)
Pinned
One of my favorite transposon facts. Think LTR retrotransposons are a homogeneous group? The two main kinds -- Ty1 and Ty3 -- are as evolutionary diverged as GIANT SQUID and PINE TREES.
February 18, 2026 at 4:54 PM
One of my favorite transposon facts. Think LTR retrotransposons are a homogeneous group? The two main kinds -- Ty1 and Ty3 -- are as evolutionary diverged as GIANT SQUID and PINE TREES.
Happening now -- just started. Evolutionary contributions of traditional maize farmers! ncsu.zoom.us/j/9706780920...
February 18, 2026 at 4:05 PM
Happening now -- just started. Evolutionary contributions of traditional maize farmers! ncsu.zoom.us/j/9706780920...
Now I’m jealous. The corn science book doesn’t look nearly this cool.
February 17, 2026 at 11:15 PM
Now I’m jealous. The corn science book doesn’t look nearly this cool.
That’ll do Davis, that’ll do.
February 15, 2026 at 11:44 PM
That’ll do Davis, that’ll do.
I knew meat could do a lot of things, but I have to say I'm impressed it can produce deli spirits.
February 15, 2026 at 4:32 AM
I knew meat could do a lot of things, but I have to say I'm impressed it can produce deli spirits.
Reposted by Jeffrey Ross-Ibarra
Found today February 14th 2026 - A scarlet elf cup fungus presenting itself just perfectly for Valentine's day.
February 14, 2026 at 12:06 PM
Found today February 14th 2026 - A scarlet elf cup fungus presenting itself just perfectly for Valentine's day.
Reposted by Jeffrey Ross-Ibarra
Anza Borrego Desert State Park is absolutely amazing rn. #Bloomscrolling
February 15, 2026 at 2:16 AM
Anza Borrego Desert State Park is absolutely amazing rn. #Bloomscrolling
Kayak and picnic on this lovely island in Putah Creek (the Green River of Credence Clearwater fame). Not named on any map so we’ve dubbed it Isla Ross-Ibarra.
February 14, 2026 at 11:23 PM
Kayak and picnic on this lovely island in Putah Creek (the Green River of Credence Clearwater fame). Not named on any map so we’ve dubbed it Isla Ross-Ibarra.
Find you a colleague who tolerates you live-slacking them a MST3K-style commentary on their paper as you read it.
February 13, 2026 at 11:11 PM
Find you a colleague who tolerates you live-slacking them a MST3K-style commentary on their paper as you read it.
Go little snakemake, go! Cotton genomes almost there!
February 13, 2026 at 4:20 AM
Go little snakemake, go! Cotton genomes almost there!
Reposted by Jeffrey Ross-Ibarra
Happy birthday to one of my favourite haters, Charles Darwin
February 12, 2026 at 4:31 PM
Happy birthday to one of my favourite haters, Charles Darwin
Reposted by Jeffrey Ross-Ibarra
Reading this for my ecological genomics class. Pretty mind-blowing stuff, even identifying insect-bacterial symbionts from high covariance in airborne eDNA!
Airborne eDNA captures three decades of ecosystem biodiversity - Nature Communications
Quantifying ecosystem dynamics is critical in the face of rapid environmental change. This study uses airborne eDNA to quantify changes in organism abundances across the tree of life and reveal a regi...
doi.org
February 12, 2026 at 4:48 PM
Reading this for my ecological genomics class. Pretty mind-blowing stuff, even identifying insect-bacterial symbionts from high covariance in airborne eDNA!
This isn't shortread data, but alignments of genome assemblies with N50 > 100Mb. The plot is the # of bp per 100Kb window that are dropped because of missing data -- because those bp physically are not there in one of the other 25 genomes. This is what normal plant genomes look like, folks.
February 12, 2026 at 3:29 PM
This isn't shortread data, but alignments of genome assemblies with N50 > 100Mb. The plot is the # of bp per 100Kb window that are dropped because of missing data -- because those bp physically are not there in one of the other 25 genomes. This is what normal plant genomes look like, folks.
Earlier today esri (the company that makes ArcGIS) emailed me a very kind letter announcing my admission to Hogwarts. Now they email an apology for “a test email sent in error”. Whom to believe??
February 12, 2026 at 1:44 AM
Earlier today esri (the company that makes ArcGIS) emailed me a very kind letter announcing my admission to Hogwarts. Now they email an apology for “a test email sent in error”. Whom to believe??
Per our agreement more than a decade ago, now that his main postdoc paper has hit 1,000 citations I am obliged to publicly admit that maybe hiring @mbhufford.bsky.social was not such a bad idea. Doesn't hurt that since then he's become a close friend and collaborator (and fancy endowed chair too)!
February 11, 2026 at 4:05 PM
Per our agreement more than a decade ago, now that his main postdoc paper has hit 1,000 citations I am obliged to publicly admit that maybe hiring @mbhufford.bsky.social was not such a bad idea. Doesn't hurt that since then he's become a close friend and collaborator (and fancy endowed chair too)!
Printed a paper to review today. Can't remember last time I printed a paper. Had forgotten how nice it is to have a physical copy.
February 11, 2026 at 12:57 AM
Printed a paper to review today. Can't remember last time I printed a paper. Had forgotten how nice it is to have a physical copy.
Reposted by Jeffrey Ross-Ibarra
'A concentration camp is a prison or other facility used for the internment of political prisoners or politically targeted demographics, such as members of national or ethnic minority groups, on the grounds of national security, or for exploitation or punishment.'
en.wikipedia.org/wiki/Concent...
en.wikipedia.org/wiki/Concent...
Concentration camp - Wikipedia
en.wikipedia.org
February 9, 2026 at 9:34 PM
'A concentration camp is a prison or other facility used for the internment of political prisoners or politically targeted demographics, such as members of national or ethnic minority groups, on the grounds of national security, or for exploitation or punishment.'
en.wikipedia.org/wiki/Concent...
en.wikipedia.org/wiki/Concent...
Reposted by Jeffrey Ross-Ibarra
Excited for this. Teaching popgen is one of my favourite parts of my job and I've wondered about doing an online version of the class for sometime. Teaming up with @jrossibarra.bsky.social to do this is wonderful.
Fun news! @gcbias.bsky.social and I are teaching a 2-week online population genetics workshop this summer to raise money for the Center for Population Biology at UC Davis. We're trying to gauge interest -- please fill this out if you might be interested! And please share broadly!
Davis Summer Population Genomics Program
Want to learn population genetics? Please fill out this form to indicate your potential interest in a 2-week intensive online summer population genetics course taught by Jeffrey Ross-Ibarra and Graham...
docs.google.com
February 10, 2026 at 6:04 PM
Excited for this. Teaching popgen is one of my favourite parts of my job and I've wondered about doing an online version of the class for sometime. Teaming up with @jrossibarra.bsky.social to do this is wonderful.
Fun news! @gcbias.bsky.social and I are teaching a 2-week online population genetics workshop this summer to raise money for the Center for Population Biology at UC Davis. We're trying to gauge interest -- please fill this out if you might be interested! And please share broadly!
Davis Summer Population Genomics Program
Want to learn population genetics? Please fill out this form to indicate your potential interest in a 2-week intensive online summer population genetics course taught by Jeffrey Ross-Ibarra and Graham...
docs.google.com
February 9, 2026 at 6:24 PM
Fun news! @gcbias.bsky.social and I are teaching a 2-week online population genetics workshop this summer to raise money for the Center for Population Biology at UC Davis. We're trying to gauge interest -- please fill this out if you might be interested! And please share broadly!
Best new email from someone interested in the lab: “I am very interested in the research conducted in your lab, especially your work on [mention their recent paper/project]. “
February 9, 2026 at 5:46 PM
Best new email from someone interested in the lab: “I am very interested in the research conducted in your lab, especially your work on [mention their recent paper/project]. “
So cool. Multiple cell lineages contribute to the germline in maize -- and differences between apical and lateral branches! www.biorxiv.org/content/10.6...
www.biorxiv.org
February 9, 2026 at 4:39 PM
So cool. Multiple cell lineages contribute to the germline in maize -- and differences between apical and lateral branches! www.biorxiv.org/content/10.6...
GitHub is intermittently down. That's basically a federal holiday right?
February 9, 2026 at 4:14 PM
GitHub is intermittently down. That's basically a federal holiday right?
Wonderful, NOW who’s going to Be all those Atles?
Great, NOW who's going to Imagine all of these Dragons?
Great, NOW who's going to Kill all of these Bikinis?
February 8, 2026 at 7:25 PM
Wonderful, NOW who’s going to Be all those Atles?
Damnit, that’s not how you calculate nucleotide diversity.
Without naming your job, tell me something you say over and over again at work.
"Where are your citations?"
"Where are your citations?"
Without naming your job, tell me something you say over and over again at work.
"No, you can't leave that here."
"No, you can't leave that here."
February 7, 2026 at 11:44 PM
Damnit, that’s not how you calculate nucleotide diversity.