Johan Renaudie
@plannapus.bsky.social
📤 243
📥 580
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Micropaleontologist.
#Radiolaria
🔬🌊🦠
reposted by
Johan Renaudie
EcoEvoRxiv
12 days ago
Fossils for Future: the billion-dollar case for paleontology’s digital infrastructure DOI:
doi.org/10.32942/X2D...
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reposted by
Johan Renaudie
PaleoSynthesis
3 months ago
BioDeeptime has made it into Science! "Climate is changing fast—and forests are 200 years behind". A sweeping new analysis of ancient pollen and modern data reveals this dramatic lag—and its consequences."(from ScienceDaily) - article: DOI: 10.1126/science.adr6700 CONGRATULATIONS to the authors.
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reposted by
Johan Renaudie
Lee Hsiang Liow (廖珕庠)
3 months ago
Vegetation might not be able to keep up with current rates of environmental change, given data from the pollen fossil record. Fun doing this work with David Fastovich in the lead, but sobering
www.science.org/doi/10.1126/...
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Coupled, decoupled, and abrupt responses of vegetation to climate across timescales
Climate and ecosystem dynamics vary across timescales, but research into climate-driven vegetation dynamics usually focuses on singular timescales. We developed a spectral analysis–based approach that...
https://www.science.org/doi/10.1126/science.adr6700
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Johan Renaudie
Sandra Passchier
3 months ago
Check out our latest
#IODP
#Exp379
contribution about the
#Antarctic
Ice Sheet's history
@natcomms.nature.com
. Read the full article here:
rdcu.be/euikE
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West Antarctic ice retreat and paleoceanography in the Amundsen Sea in the warm early Pliocene
Nature Communications - A geological climate archive documents the effects of ocean warming on Antarctic marine ice-sheets. Large sediment fluxes from the interior of West Antarctica precede the...
https://rdcu.be/euikE
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Is it just for me or are all the IODP Proceedings currently unreachable? I'm getting Error 403 on all of them and the individual DOIs lead to Error: DOI not found.
3 months ago
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Now published online in Current Biology!
www.cell.com/current-biol...
add a skeleton here at some point
5 months ago
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And it is finally out!
bg.copernicus.org/articles/22/...
add a skeleton here at some point
5 months ago
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reposted by
Johan Renaudie
John Burns
10 months ago
A bunch of cells of the nasselarian radiolarian Plagiacantha arachnoides--like a group of little spiders! Plus a couple of bonus acantharians. From the gulf of maine
#protistaday
#protistsonsky
#marinelife
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reposted by
Johan Renaudie
Serjoscha Evers
10 months ago
Second paper in Ecology & Evolution out in two consecutive days! 🐢🤩🐢 "Functional and character disparity are decoupled in turtle mandibles", w team fr MfN Berlin (incl.
@plannapus.bsky.social
) I guess the German chancellor would call this a "Doppel-Wumms" 😜
onlinelibrary.wiley.com/doi/10.1002/...
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Functional and Character Disparity Are Decoupled in Turtle Mandibles
Here, we compare functional disparity measured by biomechanical proxies and character disparity measured by discrete morphological characters in turtle jaws. Exploration of mandibular patterns reveal...
https://onlinelibrary.wiley.com/doi/10.1002/ece3.70557
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reposted by
Johan Renaudie
John Burns
11 months ago
"The death of an acantharian" Or: why we don't have fossil acantharian skeletons like we do for their glassy and chalky cousins. I think in this case it might somehow be an active process--acantharian skeletons from cells that swarm away last longer.
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Sarah, Dave and I just got a small piece published in PAGES Magazine on the legacy of IODP in term of evolutionary studies and conservation biology (with radiolarians as case study):
doi.org/10.22498/pag...
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Radiolaria as a study system for marine plankton in a changing climate | PAGES
https://doi.org/10.22498/pages.32.2.112
11 months ago
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Happy to have collaborated on this with Miguel! A new time-calibrated molecular phylogeny of radiolarians with insights on their hidden diversity 🧪
add a skeleton here at some point
12 months ago
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reposted by
Johan Renaudie
Miguel Méndez Sandín
12 months ago
Radiolaria are known for their elaborate and gorgeous skeletons, found all over our oceans. But what if I tell you that half of their diversity might be naked!?
www.biorxiv.org/content/10.1...
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New article from our student Gabrielle, on Late Eocene paleoproductivity in the Southern Ocean! 🧪
cp.copernicus.org/articles/20/...
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Late Eocene to early Oligocene productivity events in the proto-Southern Ocean and correlation to climate change
Abstract. The Eocene–Oligocene transition (EOT, ca. 40–33 Ma) marks a transformation from a largely ice-free to an icehouse climate mode that is well recorded by oxygen-stable isotopes and sea surface...
https://cp.copernicus.org/articles/20/1327/2024/
over 1 year ago
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Our latest study using the Neptune database is out as a preprint. Long story short: we tried to replicate past estimates of global sedimentation rates during the Cenozoic and noticed biases that went previously ignored and tried to correct them.
egusphere.copernicus.org/preprints/20...
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Cenozoic pelagic accumulation rates and biased sampling of the deep sea record
Abstract. Global weathering is a primary control of the earth's climate over geologic time scales: converting atmospheric pCO2 into dissolved bicarbonate; with carbon sequestration by marine plankton ...
https://egusphere.copernicus.org/preprints/2024/egusphere-2023-3087/
over 1 year ago
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reposted by
Johan Renaudie
Wolfgang Kiessling
almost 2 years ago
The first finely resolved CO2-curve for the last 66 million years. Almost identical to the temperature curve. Little room for other drivers than greenhouse gasses to control Earth's climate.
www.science.org/doi/10.1126/...
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A message to the Neptune database users: the website and the database server are not currently accessible. An alternate access is available though as (versioned) backups of the database are now available on Zenodo (
doi.org/10.5281/zeno...
). (1/4)
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Archive of Neptune (NSB) database backups
This is the state of the Neptune (NSB) database (http://nsb.mfn-berlin.de) as of 2023-06-05 archived by Johan Renaudie..The database is given as a native PostgreSQL backup (nsb_postgresql.zip) and is ...
http://doi.org/10.5281/zenodo.8238613
almost 2 years ago
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