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Jeffrey Ross-Ibarra

@jrossibarra

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)

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Latest posts by Jeffrey Ross-Ibarra @jrossibarra

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HPC Carpentry Approved as The Carpentries' Fourth Lesson Program On 5 February 2026, our Board of Directors voted unanimously to approve the adoption of HPC Carpentry as the fourth official lesson program of The Carpentries, alongside the Data Carpentry, Library Ca...

'HPC Carpentry will launch as a full lesson program on 1 September 2026.' carpentries.org/blog/2026/02...
Interesting focus on Snakemake/Maestro! I assume eventually they'll have a Nextflow too

10.03.2026 02:26 πŸ‘ 2 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

🌿 Postdoc opportunity in plant evolutionary ecology/genetics!

My lab in the Dept. of Ecology & Evolutionary Biology at the University of Michigan is recruiting a postdoctoral researcher to start Fall 2026.

We study plant adaptation, using weeds as model systems.

#Postdoc #EcoEvo

Pls RT!

08.03.2026 21:27 πŸ‘ 114 πŸ” 155 πŸ’¬ 2 πŸ“Œ 1

Not yet; check back in 15 min.

07.03.2026 06:23 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

If c is for corn this could happen.

07.03.2026 06:00 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

On the bright side, you're gaining on me percentage-wise!

07.03.2026 05:49 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Happy birthday. I'm sorry to say, however, that, like last year, this has been yet another unsuccessful attempt to be older than me :) Keep trying though!

07.03.2026 05:46 πŸ‘ 6 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Also worst drawings of corn I have ever seen on a cake.

06.03.2026 16:59 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

That’s silly. It’s a sale not a monster house. People are just taking time to pay… with their souls.

06.03.2026 15:49 πŸ‘ 7 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

MKado: a toolkit for McDonald-Kreitman tests of natural selection https://www.biorxiv.org/content/10.64898/2026.03.02.709122v1

04.03.2026 23:40 πŸ‘ 14 πŸ” 8 πŸ’¬ 0 πŸ“Œ 0
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"The bathroom code is 4723"
"I don't understand, the door is unlocked"
"That's for the TP"

05.03.2026 18:12 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I took a similar class from Karl Taube. Most the anthropologists grad students would take it twice. Fantastic course.

05.03.2026 15:15 πŸ‘ 2 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

I spent a summer in grad school chauffeuring the heiress of the Olds fortune in her one-of-a-kind pink convertible Oldsmobile.

05.03.2026 06:35 πŸ‘ 17 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I spent a couple of days collecting ebony trees with a mafia boss.

05.03.2026 06:28 πŸ‘ 9 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Postdoctoral Researcher - Evolutionary Genomics and Population Genetics Position Title: Postdoctoral Researcher - Evolutionary Genomics and Population Genetics Appointment Type: Post Doc/Trainee Job Description: Summary of Duties and Responsibilities: We are seeking a Pos...

Postdoc in evolutionary genetics with @mbhufford.bsky.social isu.wd1.myworkdayjobs.com/IowaStateJob...

03.03.2026 19:03 πŸ‘ 16 πŸ” 18 πŸ’¬ 0 πŸ“Œ 0
Preview
Integrating ecological release into the domestication equation The ancient domestication of plants and animals permitted the agricultural yields necessary to feed higher densities of humans, leading to urbanism an…

Love this kind of thinking about domestication from an ecological perspective. Excited to read this. H/T @mgstetter.bsky.social for sharing this.
www.sciencedirect.com/science/arti...

03.03.2026 18:23 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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This looks neat, actually does a formal analysis of what I've suspected for a long time -- Ξ”K is an odd way to decide number of pops. H/T @biologyjoe87.bsky.social for the paper. (Personally I think K=0) www.biorxiv.org/content/10.6...

03.03.2026 18:05 πŸ‘ 15 πŸ” 7 πŸ’¬ 0 πŸ“Œ 0
GitHub - RILAB/argprep: Snakemake pipeline for generating SINGER input files from whole genome alignment .maf files. Snakemake pipeline for generating SINGER input files from whole genome alignment .maf files. - RILAB/argprep

Recently we're working with SNPs from whole genome assemblies to estimate ARGs. It's a pain to go from alignment files to vcf, keeping track of masked and invariant sites. So we wrote a snakemake/SLURM pipeline. Hope it's useful to others, and don't hesitate to post issues if there are problems!

03.03.2026 17:41 πŸ‘ 50 πŸ” 21 πŸ’¬ 1 πŸ“Œ 1

I have a big stash of pink and just haven’t gotten around to doing it again. I should!

03.03.2026 03:50 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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What kinda silly person gets their hair dyed hot pink just to celebrate a paper. Certainly not me in 2021.

03.03.2026 03:29 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Good question! First and fourth were the same annual conference just 11 months apart. The third was in fact sort of a recombination of the first and second!

03.03.2026 01:10 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Well said!

03.03.2026 01:09 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I just got back from what I hope is a record: in the last 12 months I’ve been to four maize genetics conferences. In theory five would have been possible!

03.03.2026 01:01 πŸ‘ 15 πŸ” 0 πŸ’¬ 3 πŸ“Œ 1

we talk about carcinization, but never about the many, many times plants have invented the β€œtree.”

Tree is not a kind of plant, it is a thing plats do, and they are by and large unrelated.

02.03.2026 14:47 πŸ‘ 387 πŸ” 82 πŸ’¬ 11 πŸ“Œ 11

Researchers in the US might be having feelings about writing grants atm-I know I am!

We still need to write them. In this Evolution Exchange, I again chat with Sam Scheiner, who summarizes how to write a competitive proposal.

His advice is gold, and helpful regardless of funder. Pls RT!

02.03.2026 15:32 πŸ‘ 58 πŸ” 42 πŸ’¬ 2 πŸ“Œ 0

Ridiculously brilliant! Parents are terrible, fickle, thoughtless creatures. (My kids tell me this all the time). Need to have written evidence of their criminal uncaring.

02.03.2026 21:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I think you could, but as a computational plant biologist I'm the wrong guy to ask.

02.03.2026 20:57 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Consuming too much leucine is bad for your mental health. Makes you go CUU-CUU.

02.03.2026 20:46 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

You wrote them both, didn't you Michael.

02.03.2026 20:29 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

That's a lot to be wary of.

02.03.2026 20:09 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yes!!

02.03.2026 19:17 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0