Ruben Cousins-Westerberg
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rucouwes.bsky.social
Ruben Cousins-Westerberg
@rucouwes.bsky.social
110 followers 140 following 26 posts
Evolutionary ecologist, doing a PhD on phylogenetics and evolution of sex-determination in the Hawaiian Wikstroemia genus of flowering plants 🌿 At Lund University, Sweden.

Ever disappointed in the non-existence of dragons 🐉🐉🐉

He/him/they/them ~ 🏳️‍🌈🏳️‍⚧️
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rucouwes.bsky.social
Ruben Cousins-Westerberg @rucouwes.bsky.social · Sep 17
Hello all new followers! Writing "Hi, I'm Ruben" feels redundant and uninteresting given that it says so on my profile already.

To introduce myself, I will instead introduce my study system and project. And to do this, I will post 16 images from 16 days of Hawai'i island fieldwork.
Reposted by Ruben Cousins-Westerberg
bayesianboy.bsky.social
A new study from Anthropic finds that gains in coding efficiency when relying on AI assistance did did not meet statistical significance; AI use noticeably degraded programmers’ understanding of what they were doing. Incredible.
January 30, 2026 at 11:47 PM
Reposted by Ruben Cousins-Westerberg
deepsthlmuni.bsky.social
The Department of Ecology, Environment and Plant Sciences at @stockholm-uni.bsky.social has two open PhD positions, help us spread the word! 📣

We are looking for a PhD student in Lichen Biology, and one in Ecology & Evolution. Find more information and apply by 1 February below!
Work with us - Stockholms universitet
www.su.se
January 21, 2026 at 1:29 PM
rucouwes.bsky.social
Wikipedia celebrates 25 years this year! Sending some love today to (arguably) the best source of knowledge in the world.

From dial-up days to now, travel through Wikipedia's history. wikipedia25.org/en/twenty-fi...
25 years of Wikipedia
wikipedia25.org
January 19, 2026 at 5:02 PM
rucouwes.bsky.social
"Quick and easy" roadmap to finished paper. If I do two things per week I'll be done in no time... It's fine if I don't do anything else the coming three months, right?
January 16, 2026 at 8:38 AM
Reposted by Ruben Cousins-Westerberg
richardsever.bsky.social
One of my concerns with AI-assisted research in biology is that we're already looking only in the lamplight and AI incentivizes us to narrow the beam. Seems like it's happening...
www.nature.com/articles/s41...
Artificial intelligence tools expand scientists’ impact but contract science’s focus - Nature
Artificial intelligence boosts individual scientists’ output, citations and career progression, but collectively narrows research diversity and reduces collaboration, concentrating work in data-rich a...
www.nature.com
January 15, 2026 at 4:08 PM
rucouwes.bsky.social
My co-conspirator and fellow PhD student Lila writes for The Conversation about how plants have separate sexes, sometimes. Ever wondered something about plant sexual systems? How to start learning about it? I'd say start with this.
Plant sex life is more complicated than you probably imagine
The amazing variety of plant reproductive systems.
theconversation.com
January 9, 2026 at 8:49 AM
Reposted by Ruben Cousins-Westerberg
ijpsjournal.bsky.social
Folks, this can compromise the confidentiality of the review process, as well as authors’ intellectual property rights. Doing it is a breach of peer review ethics.
December 16, 2025 at 10:57 PM
rucouwes.bsky.social
"Phylophytobiogeography" I type. I hesitate... is there no way I can be a bit more... specific?
#academicenglish
October 23, 2025 at 9:02 AM
Reposted by Ruben Cousins-Westerberg
deepsthlmuni.bsky.social
We’re hiring! 📣

DEEP at @stockholm-uni.bsky.social is looking for a tenured Associate Professor in Plant Ecology. Join a vibrant research & teaching community in the heart of Sweden’s capital.

Learn more and apply below by 16 Nov.👇
DEEP seeks Associate Professor in Plant Ecology – apply now! - Department of Ecology, Environment and Plant Sciences
DEEP seeks Associate Professor in Plant Ecology – apply now! - Department of Ecology, Environment and Plant Sciences
www.su.se
September 25, 2025 at 10:17 AM
Reposted by Ruben Cousins-Westerberg
rbgkew.bsky.social
Botanist or poet? For National Poetry Day, we discovered poetry hidden amongst the personal papers of botanists - from J. Fraser’s 1919 poem on poppies to H.M Ward’s critique’s on his mother’s poetry!
#KewLA
Close up of letter from H.M. Ward to his mother, reading: ‘July 20: I have just got the second batch of your poems. I strongly advise you to be careful, the ideas are…& poetical to a degree; but you…too apt to lose the on the metre on you…in technical construction. Handwritten poem by J Fraser, titled ‘The Corn Poppy’ with a sentence crossed out then four stanzas reading: “The scarlet poppy reddens daily, Amongst the cornfields blossoms gaily, Makes comely neighbours wanton palely, and dazzles all beneath the skies, But beckons me with swanting [sic] eyes. Uh! Could I like the gliding swallow, Explore the vale and upland follows, No more in smoky dens I’d swallow, No longer breathe the air that falls Midst crowded streets and staring walls. Then would I bid adieu to collow, And scour the…height and hollow, Un…the downs and blithely follow, along the fields where bright corn rose – The glorious flaming poppy – glows. To-day would have no room for sorrow, No boding thoughts to gloom to-morrow, And each day after fair would borrow Another glide along the plain, to search amongst the bended grain’” Loose papers, with handwritten poem on top of five stanzas, the second of which is crossed out then rewritten underneath. It reads: “The transport bent by wholesome breezes, Where charming guise of landscape pleases, Brings life amend, as man can…., and genders thanks for flow’r so fair, That smile and make my errand there. I love to see the wild bee settle, Upon the smooth and silky petal, And laugh to view its ardent mettle, When tumbling round the…flow’r, Collecting bee bread hour by hour. The longest day draws with gloaming, And puts an end to handsome roaming; I grieve to mark its shadows coming, But more to think when day is blind, that I must leave my flow’r behind. The corn, the poppy, bee and ether, And birds that wing on airy feather, all choose the wilds and hang together, Beneath the great and blue sky-dome, And I must visit them at home” Signed at end: J.F., March 15th 1919
October 2, 2025 at 9:50 AM
rucouwes.bsky.social
Hello all new followers! Writing "Hi, I'm Ruben" feels redundant and uninteresting given that it says so on my profile already.

To introduce myself, I will instead introduce my study system and project. And to do this, I will post 16 images from 16 days of Hawai'i island fieldwork.
September 17, 2025 at 8:16 PM
Reposted by Ruben Cousins-Westerberg
milocco.bsky.social
🚨 We're hiring!
PhD position in Evolutionary Systems Biology at Stockholm University & SciLifeLab

🎓 Focus: evolution, development, computational & mathematical modeling, prediction
📍 Stockholm, Sweden
🕒 4 years, fully-funded
🔍 Details: su.varbi.com/en/what:job/...

Please share!
August 25, 2025 at 9:01 AM
rucouwes.bsky.social
Come work in our division!
evoldir.bsky.social EvolDir @evoldir.bsky.social · Aug 22
Lund University is seeking a postdoc/researcher for an ERC project on gene expression in hybrid Italian sparrows. One-year position with potential extension. Apply here: https://lu.varbi.com/en/what:job/jobID:833332/ #postdoc
Researcher in hybridization induced changes to gene expression
Researcher in hybridization induced changes to gene expression
lu.varbi.com
August 23, 2025 at 9:10 AM
Reposted by Ruben Cousins-Westerberg
fishcongen.bsky.social
Aurelien Tellier presenting the details of #eseb2027 which will be a hub meeting, with connected and local sessions in 4 hubs (Gothenburg, Munich, London, Istanbul) eseb2027.org #eseb2025
August 22, 2025 at 12:19 PM
Reposted by Ruben Cousins-Westerberg
giuliascarparo.bsky.social
Thanks to Sofia and May Sheday for the courageous and inspiring talks! The scientific world cannot remain silent @eseb2025.bsky.social #ESEB2025 #inclusivity 🏳️‍🌈 #transrights 🏳️‍⚧️ #freepalestine 🇵🇸
August 22, 2025 at 11:03 AM
rucouwes.bsky.social
Festa de Gràcia!
August 21, 2025 at 10:29 PM
Reposted by Ruben Cousins-Westerberg
aaronkiggen.bsky.social
The follow-up in ESEB Barcelona! :)
August 19, 2025 at 9:16 PM
rucouwes.bsky.social
Great first three days of ESEB @eseb2025.bsky.social

Many great talks, many great posters, lots and lots of great evolutionary biology.

Also many new followers! I will post a proper introduction once the conference is over, but for now: hello!
August 21, 2025 at 12:09 AM
Reposted by Ruben Cousins-Westerberg
yeetkunedo.bsky.social
re: generative AI

I have finally fully and accurately explained my problem with how it’s marketed and used.

And now, you can use it, too.
Generative Al is being marketed as a tool designed to reduce or eliminate the need for developed, cognitive skillsets. It uses the work of others to simulate human output, except that it lacks grasp of nuance, contains grievous errors, and ultimately serves the goal of human beings being neurologically weaker due to the promise of the machine being better equipped than the humans using it would ever exert the effort to be. The people that use generative Al for art have no interest in being an artist; they simply want product to consume and forget about when the next piece of product goes by their eyes. The people that use generative Al to make music have no interest in being a musician; they simply want a machine to make them something to listen to until they get bored and want the machine to make some other disposable slop for them to pass the time with. The people that use generative Al to write things for them have no interest in writing. The people that use generative Al to find factoids have no interest in actual facts. The people that use generative Al to socialize have no interest in actual socialization. In every case, they've handed over the cognitive load of developing a necessary, creative human skillset to a machine that promises to ease the sweat equity cost of struggle. Using generative Al is like asking a machine to lift weights on your behalf and then calling yourself a bodybuilder when it's done with the reps. You build nothing in terms of muscle, you are not stronger, you are not faster, you are not in better shape. You're just deluding yourself while experiencing a slow decline due to self-inflicted atrophy.
July 6, 2025 at 5:23 PM
rucouwes.bsky.social
If I wasn't already tied up with a different plant, I'm not sure I could resist falling headfirst in love with the ʻōhiʻa lehua. Not only do they pop up out of the lava rock like it's nothing, they also have such amazing blossoms!
The ʻōhiʻa lehua (Metrosideros polymorpha) os the state tree of Hawai'i, and the official tree of the island of Hawai'i too. The volcano goddess Pele is often depicted with ʻōhiʻa blossoms in her hair. Not strange, given how they are the earliest pioneers on the lava field, and yet remain dominant there for hundreds of years after. Also not strange given how pretty they are. An ʻōhiʻa blossom in all their glory. As I understand it, they are generally adapted to be pollinated by birds, although there apparently are some trees with more yellowish and compact flowers that specialise on insects. ʻŌhiʻa popping out of the lava at the bottom of Kīlauea Iki crater like nobody's business.
June 20, 2025 at 5:32 AM
rucouwes.bsky.social
Don't look at the view, look at these plants! 🌿

You looked at them? You sure? Fine. Now you can look at the view. ⛰️

#fieldwork #botany #hawaii
Wikstroemia oahuensis, on a backdrop of 'Ewa Forest Reserve on Oahu, Hawai'i Wikstroemia oahuensis or, perhaps, Wikstroemia recurva? Depends on who you ask. The Poamoho Ridge Trail gives a fantastic view of 'Ewa Forest Reserve. Here we find one of the few untouched spots on Oahu. Don't look down... unless there is a rare endangered plant just below the ledge. Spoilers: there were several
May 25, 2025 at 2:17 AM
rucouwes.bsky.social
Native Hawaiian Plants course excursion. Lots of plants, lots of rain, enthusiastic grad students, great views, and flowering Wikstroemia to sample.
View from Palikea trailhead Students listening to lecture, having hiked up to where the native plants take over up on the ridge. Steep drops never look that bad on camera. Maybe that is just as well. ʻŌhiʻa lehua, Metrosideros polymorpha, is the tree representing the native plants of Hawai'i.
April 30, 2025 at 4:46 AM
rucouwes.bsky.social
Tester Memorial Symposium at the School of Life Sciences, UHM.

Learned a lot about marine biology around the Pacific, and a little bit about terrestial stuff too. An important theme in "Hoʻokele ʻIke: Navigating Knowledge in Life Sciences", a wonderful end banquet, and a great experience overall!
April 14, 2025 at 1:54 AM
rucouwes.bsky.social
From this week and three months onward I am in Hawai'i for #fieldwork and collaboration. Currently getting myself acquainted with Honolulu.
April 11, 2025 at 4:10 AM
Reposted by Ruben Cousins-Westerberg
3rdreviewer.bsky.social
My species concept is the one that gets the most money
April 8, 2025 at 9:58 PM