Kale Sniderman

Kale Sniderman

@muddypollen.bsky.social

Palynologist, paleoclimatologist, plant biogeographer | vegetation and climate history | fossil pollen

567 followers587 following385 posts

Kale Sniderman reposted

The water had just dried up and left these Isoetes sp. in the dry! I imagine they would have been getting ready to release spores! Amazing little non-flowering plant!

Absolutely

Jack Ashby@jackdashby.bsky.social

If there were any justice in the world, every day would be #WorldWombatDay, but today is the official day to celebrate these glorious creatures that crush their enemies with their buttocks, dig burrows tens of metres long, constantly regrow their teeth, have babies called wombatlets, and poop cubes.

Luxury consumption of phosphorus and calcium. It's an outrage and it should be stopped

Jack Ashby@jackdashby.bsky.social

Lots of animals get called "weird" (platypuses being the prime example- read #PlatypusMatters for the story behind that), but #deer seem to avoid this term. For me, few things are weirder than growing - & then dropping - several kilos of bone out of your head every year.🦌 #MammalWatching #UKwildlife

Kale Sniderman reposted

New Article: "Extreme greenhouse warmth triggered the two major floristic turnover events of the past 120 million years" rdcu.be/as2QWt5eukua Extinctions/emergence of flowering plants, gymnosperms & ferns were concentrated in the 2 warmest intervals of the past 130 My. #PlantScience

Actually here is the freely readable version rdcu.be/a842YdGP66ba

rdcu.berdcu.be
Kale Sniderman @muddypollen.bsky.social

Over the past 120 Myr, most evolutionary change in fossil spore-pollen floras (floristic turnover: both extinctions & originations), at high- & low-palaeolatitudes, is concentrated within two periods of extreme warm climate. Cooler eras are comparatively uneventful.🌱🧪 www.nature.com/articles/s41...

Over the past 120 Myr, most evolutionary change in fossil spore-pollen floras (floristic turnover: both extinctions & originations), at high- & low-palaeolatitudes, is concentrated within two periods of extreme warm climate. Cooler eras are comparatively uneventful.🌱🧪 www.nature.com/articles/s41...

nature.comExtreme greenhouse warmth triggered the two major floristic turnover events of the past 120 million years - Nature PlantsPlant microfossil compilations show strong climatic control of land plant diversity. Extinctions and emergence of lineages of flowering plants, gymnosperms and ferns were concentrated within the two w...

Bogong Moths are deservedly getting all the attention but we are in serious Utetheisa pulchelloides season – the heliotrope moth – with clouds of white moths rising from the ground everywhere as we walk along in the bush (this photo is not mine, of these flighty fellas) 🧪

Proteacidites punctiporus in action

Ryan@lost-in-botany.bsky.social

I love it when Stirlingia latifolia flower they just very odd flowers for a Proteaceae, at first glance at least! They also have a unique root form, bubble roots, starch deposits build up along the roots thickening it and giving the roots a bubble wrap like appearance!

What is so weirdly deficient about this town square, that the blogpost below has less than a dozen likes?

I may gently correct @doctorow.pluralistic.net's geophysics projections but the Enshittocene is the only post-Holocene -cene worth two cents

Kale Sniderman @muddypollen.bsky.social

I acknowledge that 500 years of thermodynamics is a lot to ask the public to digest, @doctorow.pluralistic.net, but sea level is unlikely to have stabilised 500 years from now (eg see Turner's Fig 5) agupubs.onlinelibrary.wiley.com/doi/full/10.... m.youtube.com/watch?v=nTqC...

Annals of paleoecology: shifting baselines

Pete M 🌳@pete-m.bsky.social

You often hear that the Welsh uplands are naturally treeless — too high, too wet, too exposed — and that the evidence for it is upland tree cover declining from the late Mesolithic, before farming even arrived. In Eryri, the pollen record shows the opposite. 1/🧵

The database will surely be as boring as batshit, but this is a great initiative to help us understand which sediments do, or don't, preserve fossil pollen 10.1016/j.revpalbo.2026.105710

Very fine Quaternary stratigraphy

Joe Mason@moreorloess.bsky.social

Two amazing loess sections in Nebraska. Left, Middle to Late Pleistocene loess in a canal cut near Elba. Note gullies formed in the Late Pleistocene, then buried by loess. Right, Moran Canyon cut exposing the Brady Soil, formed at the Pleistocene-Holocene transition, halfway up by the cedar.

possibly the most interesting use of this meme I've seen. But does CO2 care, if it goes into and out of glycine? Shouldn't the indignant face be the leaf, or more directly the chloroplast, angry that its duplicitous enzyme servant is double-timing with O2, not giving all the goods to the leaf?

Henry Gee 亨利·纪@endofthepier.bsky.social

I know there are people who use very long words without a clear understanding of what they mean. I'm completely photosynthetic with that. While we're here, that reminds me of a somewhat nerdish joke:

Kale Sniderman reposted

"Hence our dismal conclusion: rather than finding that LLMs free us to do a better job of what we were doing before they came along, they shift scientific incentives (and the playing field of academic competition) in ways that compel us to do more and more, faster and faster, less and less well."

Carl T. Bergstrom@carlbergstrom.com

1. We—@eduede.bsky.social, @mjcrockett.bsky.social, Kevin Gross, and I—have a new preprint on the arXiv today, based on ideas that emerged during an @sfiscience.bsky.social workshop in November 2024: The unintended consequences of large language models as a labor-augmenting technology in science.

Kale Sniderman reposted

herbarium collections as unique archives of the health of pollinator-plant mutualisms

Vicky Temperton@7toucans.bsky.social

theconversation.com/preserved-or... Great new article from the Tiffany Knight lab, showing the power of herbaria to provide data from the past, here on pollination decline in orchids in Australia. 10 000 plant specimens were measured!

The assignment operator in R (<-) is vile and should be banished. It is needed constantly but is morphologically almost identical to <= (i.e. less-than-or-equal-to, ≤). It would be hard to find a smaller visual cue to carry such a large semantic load (though of course '=' just sows more confusion)

calcium-cemented neoliths are interesting objects for inhabitants of the Anthropocene to ponder, but their Myr-scale preservation potential is approx zero if they don't find their way into the deep ocean or a subsiding basin: i.e. they are fated to be surface ephemera aeon.co/essays/the-s...

aeon.coThe strange rocks that wouldn’t exist without us | Aeon EssaysNot natural, not quite unnatural, the strange new rocks of the Anthropocene stretch the boundaries of geology