Eric Hagen
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erichagen.bsky.social
Eric Hagen
@erichagen.bsky.social
560 followers 190 following 2 posts
Postdoc in the Vasconcelos lab at the University of Michigan | Macroevolution, comparative methods, biogeography, genome multiplications | Twitter: @EricHagen19
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Reposted by Eric Hagen
jamiet-42.bsky.social
Our new pre-print (with @erichagen.bsky.social, @latinorchidbot.bsky.social, @jameswclark.bsky.social , Elizabeth Forward and Nick Priest) reveals rapid pollinator evolution in orchids, but no clear impact on diversification. Perhaps pollinator specialisation is not such a powerful force. 🐝🌱
August 28, 2025 at 1:33 PM
Reposted by Eric Hagen
barkerms.bsky.social
The recording of last week's #PolyploidyWebinar featuring @raymondcast.bsky.social and @erichagen.bsky.social is now up! youtu.be/zmUyTO3jN6s
Polyploidy Webinar 2 April 2025
YouTube video by Mike Barker
youtu.be
April 8, 2025 at 5:27 PM
Reposted by Eric Hagen
barkerms.bsky.social
Join us on Wednesday, April 2 at 11 AM Pacific Time for the next #PolyploidyWebinar! The last webinar of the 24-25 season will feature @raymondcast.bsky.social and @erichagen.bsky.social! Sign up (if not already!) to get the zoom: www.barkerlab.net/polyweb
A flyer for the next Polyploidy Webinar on Wednesday, April 2, at 11 AM PDT. Featuring Raymond Castillo from Washington University presenting "Phylogenetic methods for modeling chromosome size and count" and Eric Hagen from the University of Toronto on "Using -SSE models to study diversification after neopolyploidy and paleopolyploidy"
March 29, 2025 at 1:28 AM
Reposted by Eric Hagen
shellygaynor.bsky.social
It's here and ahead-of-print at @asn-amnat.bsky.social ! 🎉 Our 22-page polyploid coexistence model is now available: doi.org/10.1086/734411

This work wouldn’t be possible without NSF support—including funding from an NSF GRFP, an NSF PRFB, and NSF DMS & DBI grants. @soltislab.bsky.social l
February 18, 2025 at 9:50 PM
Reposted by Eric Hagen
oschwery.bsky.social
🚨New #phylo paper alert!🚨 🌲+🔥= speciation? This one has been a bit of a journey, but thanks to lead author Dan Turck's expertise on #conifers it has turned out as quite the treasure-trove of conifer evolution! (reading-access link on my website)
botsocamerica.bsky.social Botanical Society of America @botsocamerica.bsky.social · Jan 5
Fire in the #tree: The origin & distribution of fire–adapted traits within #conifers & their influence on speciation rates across the conifer phylogeny

New #AJB research by Daniel Turck, @oschwery.bsky.social, Luke Harmon & David Tank

doi.org/10.1002/ajb2... #botany #plantscience
Ancestral state reconstructions of fire adaptations among conifers. (A) Thick Bark. (B) Serotinous Cones. (C) Seedling Grass Stage (Pinus only). (D) Post Fire Resprouting Ability.
January 5, 2025 at 7:55 PM
Reposted by Eric Hagen
botsocamerica.bsky.social
🌱 From the upcoming #AJB #Polyploidy special issue 🌱

Investigating historical drivers of latitudinal gradients in #polyploid plant #biogeography: A multiclade perspective

By Eric Hagen, Thais Vasconcelos, James Boyko & Jeremy Beaulieu

doi.org/10.1002/ajb2... #botany #Solanaceae
Conceptual diagram of historical biogeographic patterns expected to be observed under the ‘centers of arrival’ hypothesis (on the left) and the ‘centers of polyploidization’ hypothesis (on the right). Under the ‘centers of arrival’ scenario, polyploidization occurs across the globe but is followed by higher rates of antiequatorial movement relative to diploids. Under the ‘centers of polyploidization’ scenario, we expect to see higher rates of polyploidization in poleward environments.
June 27, 2024 at 6:03 PM
Reposted by Eric Hagen
lhliow.bsky.social
Revisiting fast-slow diversification rates with Rosana Zenil-Ferguson besjournals.onlinelibrary.wiley.com/doi/10.1111/... published @methodsinecoevol.bsky.social Plea to present uncertainty estimate and sources! and a tribute to GG Simpson
November 21, 2024 at 7:40 PM
Reposted by Eric Hagen
jboyko.bsky.social
I wrote this about finding the optimal discrete character model structure. I hope this will be useful for empiricists. The main point is that relying only on the package default models is bad and can have nasty consequences or parameter estimates and ASR.

www.biorxiv.org/content/10.1...
a potential nasty consequence. these are profile likelihoods for a default model (b/d) and a more model (a/c). (b/d) is what you'd get fitting a standard Pagel model with ARD. You get these horrible likelihood ridges for parameter estimates (e.g., b. theta4). But for the same dataset, there is a slightly non-standard model (non-standard in the sense of it's not ER/SYM/ARD) that has really nice statistical behavior
November 18, 2024 at 7:23 PM
erichagen.bsky.social
Hello Bluesky. Please enjoy my favorite nature documentary:

youtu.be/4b35nYXVNKI?...
Sexual Encounters of the Floral kind
YouTube video by Kim Parker
youtu.be
November 16, 2024 at 1:27 AM