Kjetil Lysne Voje

Really excited to have the new issue of Paleobiology @paleosoc.bsky.social out celebrating the 50th anniversary of #punctuatedequilibria #macroevolution #paleobiology #palaeontology #paleontology @nilese.bsky.social www.cambridge.org/core/journal...

Congratulations to Joe Felsenstein on being awarded the 2026 Mendel Medal!

Rate-time scaling in phenotypic evolution: Limitations of current models in capturing temporal dynamics Abstract. Evolutionary rates correlate negatively with time, which makes it complicated to compare rates across lineages that have diversified on different

More on rate-scaling in phenotypic evolution, pointing toward biological explanations, from Brune Kinneberg & Voje. Lots of debate about this pattern, but comes down to how we define "noise" vs. "biology" as represented in models. Important philosophical discussion.
academic.oup.com/evolut/advan...

The paper by Gene Hunt (2012) in Paleobiology inspired much of the work behind our paper. It's well worth a read if you haven't already enjoyed this gem: www.cambridge.org/core/journal...

Is it possible to estimate rates of phenotypic evolution that are independent of the time interval covered by the data? In theory, yes — even when the data are incomplete and biased. But in practice? Not so much. Amazing work by @vildebruhn.bsky.social

Rate–time scaling in phenotypic evolution: Limitations of current models in capturing temporal dynamics Abstract. Evolutionary rates correlate negatively with time, which makes it complicated to compare rates across lineages that have diversified on different

Article out in @journal-evo.bsky.social with @klvoje.bsky.social:

academic.oup.com/evolut/advan...

The Durham cathedral

A male smoky rubyspot damselfly

Looking for a PhD opportunity? I'm hoping to recruit someone to my group at Durham University to work on a project combining fieldwork and labwork to study speciation in rubyspot damselflies: iapetus.ac.uk/studentships...

Get in touch if you want to chat!

Tree evolution is surprisingly quirky! 🌳 Trees are likely ancestral in many plant groups, often re-evolve on islands, and Arabidopsis can be made tree-like by tweaking a few genes. We revisited what genes really make a tree a tree using comparative genomics. @trhvidsten.bsky.social #trees #evolution

Loss of macroevolutionary species fitness explains the rise and fall of clades - Nature Ecology & Evolution The interplay between speciation and extinction rates shapes clade diversity dynamics. Using a novel phylogenetic model that includes living and fossil lineages, the authors estimate speciation and ex...

Excited to share our new paper where we find that the rise, decline and fall of clades is not explained by the usual suspects (diversity-dependence, ecological opportunities) but rather by species' insidious loss of macroevolutionary fitness: www.nature.com/articles/s41... 1/3

🚨🚨JOB ALERT 🚨🚨
Fresh new position in Comparative Biology at OSU!

We're looking for a comp. biologist, especially those who investigate biomechanics, functional anatomy, neuroanatomy, or morphological development.

Feel free to ask me any questions!
jobs.okstate.edu/jobs/assista...

New paper out in Geology! Cheilostome bryozoans evolved aragonite skeletons dozens of times during the transition from calcite to aragonite seas, in contrast to other marine calcifiers. Fossil occurrence data corroborate the story and help nail down the timeline. doi.org/10.1130/G537...

🚨 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!

The Gaza Famine is the world’s famine. A preventable, predictable famine.

Enough. Ceasefire. Open all crossings, north and south. Let us get food in, unimpeded and at massive scale.

Trump Administration Says It Is Halting Harvard’s Ability to Enroll International Students

Another incredibly shameful move from the Trump administration. Upending the lives of so many young people to score cheap political points is absolutely unconscionable.

www.nytimes.com/2025/05/22/u...

#FossilFriday Jabba the Zooid. This teratological zooid in a colony of the bryozoan Tornipora reminds me of Jabba the Hutt from Star Wars. Cretaceous, Campanian, Archiac, SW France.

POSTDOCTORAL DATA SCIENTIST IN MACROECOLOGY AND MACROEVOLUTION (2+ YEARS IN PRAGUE) at Czech University of Life Sciences Prague in Prague, CZECHIA May 12, 2025 | We invite applications for a full-time, two-year data scientist postdoctoralposition (with potential for an extension) spanning large-scale... | NEW JOB

We’re hiring a postdoc (2+ years) in macroecology and macroevolution in my new lab at CZU Prague: www.researchgate.net/job/1021667_...

The white noise model is a statistical interpretation of stasis, which distinguishes it from a random walk process.

Stasis is defined as trait evolution similar to a white noise process (variation around a fixed mean). There is no cut-off for how much variation the trait mean can fluctuate around the steady state, so time series that fit stasis can actually show significant evolution (but with low net evolution).

Postdoctoral Fellow: Self-Developed Project (280531) | University of Oslo Job title: Postdoctoral Fellow: Self-Developed Project (280531), Employer: University of Oslo, Deadline: Monday, June 23, 2025

Are you seeking a postdoc opportunity? The Natural History Museum in Oslo is on the lookout for candidates who want to create their own projects. If you're interested in brainstorming project ideas, feel free to reach out! More information here:👇 www.jobbnorge.no/en/available...

Here is our attempt at summarizing the state of the evidence for the punctuated equilibrium hypothesis. The paper is part of a special issue of Paleobiology celebrating the 50th anniversary of the PE Hypothesis. Work led by Gene Hunt. @lhliow.bsky.social www.cambridge.org/core/journal...

PhD position alert! Fully-funded PhD in my group to work on avian reproductive microbiomes and immunity. Please RT! Deadline June 29th, reach out for more information. #microbiomes #sparrows #spermbiology

4 years ago, @anjaligupta.bsky.social spent a summer in Lund and collected amazing data of #damselflies. Now, the data/results are published doi.org/10.1093/jeb/... @jevbio.bsky.social ky.social. My highlight: we proposed a way to relate present-day selection #microevolution with #macroevolution.

Introducing a New Article Type for The American Naturalist | The American Naturalist

We're super excited to introduce a new article category for @asn-amnat.bsky.social: Inspiring perspectives. In a nutshell, we want these articles to spark lively scientific debates that will inspire future research directions in biology. More info here: www.journals.uchicago.edu/doi/full/10....

Associate Professor in evolutionary genomics of vertebrates (279638) | NTNU - Norwegian University of Science and Technology Job title: Associate Professor in evolutionary genomics of vertebrates (279638), Employer: NTNU - Norwegian University of Science and Technology, Deadline: Sunday, May 25, 2025

The Department of Natural History at NTNU is seeking an ambitious candidate for an open position as associate professor in vertebrate evolutionary genomics. Please see 👇 for details. Deadline for applications is May 25.

www.jobbnorge.no/en/available...