Alex Skeels
banner
alexskeels.bsky.social
Alex Skeels
@alexskeels.bsky.social
ARC DECRA Fellow based at the Australian National University - Ngunnawal & Ngambri /Canberra 🐨 Evolution of Biodiversity 🌸🌏🏵️ He/Him

website: alexskeels.github.io
Reposted by Alex Skeels
"Here we show substantial declines in the rates of collection of specimen data over recent decades, from analysis of over 150 million records from the Global Biodiversity Information Facility (GBIF) spanning more than two centuries"
www.nature.com/articles/s41...
🧪 #Macroecology #EvoBio #Paleobio
November 25, 2025 at 11:04 PM
Reposted by Alex Skeels
📢 deeptime 📦 v. 2.3.1 is now on #CRAN:

- pos arg is now recycled in coord_geo() ♻️
- fixed reverse arg for coord_geo_radial() 🍩
- pattern code/name dictionary 📖
- new logo! ✨

Patch notes 👉 williamgearty.com/deeptime/news/

Docs 👉 williamgearty.com/deeptime/

#rstats #dataviz #geology #deeptime
November 26, 2025 at 4:10 PM
Reposted by Alex Skeels
🚨 #DECRA #DE26 announcement:

❗️Outcomes announced publicly for Discovery Early Career Researcher Award 2026❗️

See ARC's RMS for list ➡️ https://rms.arc.gov.au/RMS/Report/Download/Report/a3f6be6e-33f7-4fb5-98a6-7526aaa184cf/285

/bot
November 25, 2025 at 12:04 AM
Reposted by Alex Skeels
"72% of past continental areas across the Cenozoic lack accessible sedimentary rocks..remaining 28%..disproportionately derived from regions that experienced tropical, temperate, and arid climates..cold and polar climates are underrepresented."
doi.org/10.1016/j.pa...
🧪 ⚒️ #Geology #EvoBio #Paleobio
November 21, 2025 at 2:13 PM
Reposted by Alex Skeels
I’ve released a tool to sketch and edit phylogenetic trees!
yawak.jp/PhyloWeaver/

Load a Newick file and intuitively add/remove/resize branches.
Useful for quick conceptual trees, extracting subtrees, or turning ideas into Newick.
PhyloWeaver – Interactive phylogenetic tree editor
Edit and visualize phylogenetic trees directly in your browser. PhyloWeaver lets you interactively rearrange tree topologies and export high-quality figures for publications and presentations.
yawak.jp
November 18, 2025 at 1:59 AM
Reposted by Alex Skeels
Kissing evolved at least 21 million years ago. www.sciencedirect.com/science/arti... @matildabrindle.bsky.social
November 19, 2025 at 8:40 AM
Reposted by Alex Skeels
📢 rphylopic 📦 1.6.0 is now on #CRAN!

- resolve_phylopic() retries failing API calls 🔄
- geom_phylopic()/add_phylopic() work with ggplot2 4.0.0 🪛
- add_phylopic_tree() wraps add_phylopic() for base R trees 🪾
- get_phylopic() can get og source files from #PhyloPic 👤

rphylopic.palaeoverse.org
#Rstats
November 18, 2025 at 3:30 PM
Not this again...
“CSIRO has announced it will slash up to 350 jobs as the national science agency grapples with long-term financial challenges … with current funding failing to keep pace with the rising costs of running a modern science agency.”

Not “challenges”. They’re choices. 😡
CSIRO to cut up to 350 research jobs in major overhaul
After 440 positions were slashed last year, the CSIRO has announced more staff cuts across the country in a bid to remain financially viable.
www.abc.net.au
November 18, 2025 at 7:26 AM
Reposted by Alex Skeels
“CSIRO has announced it will slash up to 350 jobs as the national science agency grapples with long-term financial challenges … with current funding failing to keep pace with the rising costs of running a modern science agency.”

Not “challenges”. They’re choices. 😡
CSIRO to cut up to 350 research jobs in major overhaul
After 440 positions were slashed last year, the CSIRO has announced more staff cuts across the country in a bid to remain financially viable.
www.abc.net.au
November 18, 2025 at 6:15 AM
Reposted by Alex Skeels
That's more than 1,100 jobs lost at the CSIRO over the last two years.

"Combined, the staff association estimates that equates to cutting the agency’s size by a third."

This is more cuts to the CSIRO than was attempted by the Abbott government.

www.smh.com.au/national/csi...
CSIRO to slash hundreds of jobs in cost-saving drive
The staff association at the nation’s leading scientific research organisation says the latest round of cuts marks “a sad day for publicly funded science”.
www.smh.com.au
November 18, 2025 at 4:53 AM
Reposted by Alex Skeels
Here is a link to the corresponding paper, which does not require the Utrecht University login:
www.nature.com/articles/s43...
Leny Montheil et al. (2025) @commsearth.nature.com, including @vanhinsbergen.bsky.social
Please check out the quoted post for an overview of this new paper! 👇🏻
🧪 ⚒️
#PaleoSky
November 15, 2025 at 11:25 AM
Reposted by Alex Skeels
This is the reconstruction that comes with our new Nature Communications Earth & Environment paper on Caribbean biogeography.

With Leny Montheil, Mélody Philippon, Franck Audemard, Lydian Boschman, Richard Wessels, Sylvie Leroy et al

#UtrechtPaleogeographicModel

www.nature.com/articles/s43...
November 15, 2025 at 1:28 PM
Reposted by Alex Skeels
November 13, 2025 at 7:23 PM
Reposted by Alex Skeels
Hot off the press! From the PhD thesis of @lopezreyeska.bsky.social where we explored the connection between biogeographic processes and climatic niche dynamics in spiny lizards 👇
November 7, 2025 at 6:59 PM
Reposted by Alex Skeels
Very happy to finally see this out in @pnas.org. Great work (masterfully) led by my dear friend @gabrielmoulatlet.bsky.social on a classic question on range sizes, climatic niches and dominance for plants at the global scale!

Thanks for the collab, Gabriel!
in "General laws of biodiversity: Climatic niches predict plant range size and ecological dominance globally", we provide key insights into species’ vulnerability to environmental change and the processes that structure biodiversity at global scales.

www.pnas.org/doi/10.1073/...
General laws of biodiversity: Climatic niches predict plant range size and ecological dominance globally | PNAS
A longstanding question in ecology asks whether or not species that achieve large geographic ranges also have large climatic niche breadths. Using ...
www.pnas.org
November 12, 2025 at 6:21 PM
Reposted by Alex Skeels
in "General laws of biodiversity: Climatic niches predict plant range size and ecological dominance globally", we provide key insights into species’ vulnerability to environmental change and the processes that structure biodiversity at global scales.

www.pnas.org/doi/10.1073/...
General laws of biodiversity: Climatic niches predict plant range size and ecological dominance globally | PNAS
A longstanding question in ecology asks whether or not species that achieve large geographic ranges also have large climatic niche breadths. Using ...
www.pnas.org
November 12, 2025 at 6:11 PM
Reposted by Alex Skeels
We wrote the Strain on scientific publishing to highlight the problems of time & trust. With a fantastic group of co-authors, we present The Drain of Scientific Publishing:

a 🧵 1/n

Drain: arxiv.org/abs/2511.04820
Strain: direct.mit.edu/qss/article/...
Oligopoly: direct.mit.edu/qss/article/...
November 11, 2025 at 11:52 AM
Reposted by Alex Skeels
Phylogeny of tinamous based on whole-genomes and fossils: academic.oup.com/sysbio/advan... 🪶🧪 (📷Musher et al.)
November 7, 2025 at 2:22 PM
Reposted by Alex Skeels
Most major theories in ecology assume some sort of equilibrium, but only ~half of empirical tests acknowledge it & even fewer observed it in their system. Does this matter? How did the idea become so pervasive in ecology anyway? Find out in our new paper! onlinelibrary.wiley.com/doi/10.1111/...
The Equilibrium Conundrum
Although an assumption of equilibrium dynamics underlies most ecological theory, the evidence for this dynamic in nature and in empirical studies is scarce. This creates an unfortunate disconnect bet...
onlinelibrary.wiley.com
November 4, 2025 at 4:38 PM
Reposted by Alex Skeels
I keep seeing journalism described as an "ecosystem" and I guess that tracks because it's undergoing an extinction crisis caused by billionaires, too.
November 3, 2025 at 8:44 PM
RIP 😢 I remember spending hours and hours on this site as an undergrad.
November 3, 2025 at 9:28 PM
Reposted by Alex Skeels
Our new @science.org paper is out! Cuckoos and hosts are locked in a coevolutionary arms race over egg mimicry.

But how are these egg types inherited, and could this drive speciation? We sequenced hundreds of genomes to find out!

doi.org/10.1126/scie...

🧵1/6
Genomic architecture of egg mimicry and its consequences for speciation in parasitic cuckoos
Host-parasite arms races facilitate rapid evolution and can fuel speciation. Cuculus cuckoos are deceptive egg mimics that exhibit a broad diversity of counterfeit egg phenotypes, representing host-ad...
doi.org
October 30, 2025 at 7:15 PM
Reposted by Alex Skeels
#PCM folks: What tools are out there for forward-in-time simulation under historical biogeography models (e.g., DEC) that include simulation of both range and lineage dynamics?
October 29, 2025 at 1:38 PM
Reposted by Alex Skeels
Out today in @currentbiology.bsky.social and led by @tillramm.bsky.social! We integrated population genomics, fossils, SDMs, and micro-CT scanning to understand how climate change has influenced extinctions and extant genetic diversity in the threatened Australian mountain dragon #ozherps #genomics
Climate change predicts Quaternary extinctions and extant genetic diversity in a threatened Australian lizard
Ramm et al. show that Quaternary climate change predicts local extinctions and intraspecific differences in genetic diversity of the threatened Mountain Dragon (Rankinia diemensis). Their data suggest...
www.cell.com
October 29, 2025 at 6:48 AM