#GDGTs
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irnasa.bsky.social
👨‍🔬Pablo Martínez Sosa, researcher at the Geological Survey of Denmark and Greenland (GEUS), delivered an Excellence Seminar last Friday at #IRNASA‑CSIC titled “Disentangling dynamic environments through the use of GDGTs.”
March 2, 2026 at 8:51 AM
irnasa.bsky.social
➡️Mañana tenemos Seminario de Excelencia en el #IRNASA-CSIC:
👨‍🔬Pablo Martínez Sosa, Geological Survey of Denmark and Greenland (GEUS)
📜"Dissentangling dynamic environments through the use of GDGTs"
February 26, 2026 at 1:56 PM
thedailypub.bsky.social
Environmental controls on GDGTs and PAHs distribution in a 116-year sediment core from Huguangyan Maar Lake: A multiproxy record of organic matter dynamics and anthropogenic impact.
Environmental controls on GDGTs and PAHs distribution in a 116-year sediment core from Huguangyan Maar Lake: A multiproxy record of organic matter dynamics and anthropogenic impact.
Published in Environmental research
doi.org
December 9, 2025 at 8:00 AM
stableisotopeecol.bsky.social
Improved procedures for the cleavage and reduction of GDGTs for hydrogen isotope analysis #stableisotopes www.sciencedirect.com/science/arti...
Improved procedures for the cleavage and reduction of GDGTs for hydrogen isotope analysis
Glycerol dialkyl glycerol tetraether (GDGT) membrane lipids of archaea and bacteria are commonly used to reconstruct past environmental conditions, ma…
www.sciencedirect.com
June 12, 2026 at 1:56 PM
robertpatalano.bsky.social
What were the ecological and biological implications of warmer continental temperatures on the appearance and evolution of Pleistocene hominin lineages in East Asia?👇🏼🏺
Warm Land Surface Temperatures and Eastern Asian Homo
Branched GDGTs from the Lantian Basin of Central China illustrate warm land surface temperatures over a two-million-year period between 2.6 and 0.6 Ma, a critical time in human evolution.
open.substack.com
October 8, 2023 at 12:41 AM
ninadavtian.bsky.social
@carbon8.bsky.social wrote a nice summary of the review paper on marine archaeal lipids as marine paleoenvironmental indicators:
eos.org/editor-highl...
🔗 to the review in the Editor’s Highlight in @eos.org and my post quoted below.
@agu.org
#AGUPubs
#TeamArchaea
#GDGTs #isoGDGTs
🧪 ⚒️ 🌊
#PaleoSky
August 4, 2026 at 2:19 PM
ninadavtian.bsky.social
Speaking of outcomes* of the 2nd int’l GDGT workshop: as Francien Peterse stated on another platform, there is more in the pipeline, so stay tuned!

*Remember my co-authored marine GDGT « cookbook » review paper (doi.org/10.5194/bg-2...) cited in the new marine archaeal GDGT mega-review paper.
(2/2)
Reviews and syntheses: Best practices for the application of marine GDGTs as proxy for paleotemperatures: sampling, processing, analyses, interpretation, and archiving protocols
Abstract. Marine glycerol dialkyl glycerol tetraethers (GDGTs) are used in various proxies (such as TEX86) to reconstruct past ocean temperatures. Over 20 years of improvements in GDGT sample processi...
doi.org
July 10, 2026 at 2:20 PM
ninadavtian.bsky.social
I re-up the 🔗 to my new co-authored review paper on marine archaeal tetraether lipids, aka #GDGTs, as marine paleoenvironmental indicators, with the 2nd int’l GDGT workshop mug and my name highlighted in the author list:
doi.org/10.1029/2025...
#AGUPubs
#TeamArchaea
#isoGDGTs
🧪 ⚒️ 🌊
#PaleoSky
(1/2)
Computer screen photographed by Nina Davtian (it’s me!) and showing the header of her co-authored review paper by Elling, Inglis, et al. (2026) Paleoceanography and Paleoclimatology (https://doi.org/10.1029/2025PA005373), with her name highlighted in the author list—Nina is the third author of the list. Nina is holding a mug on which the text reads « 2nd international GDGT workshop September 2023, Zürich ».
July 10, 2026 at 2:20 PM
ninadavtian.bsky.social
And so, my co-authored marine #TeamArchaea #GDGTs review paper led by @lipidorama.bsky.social and @climategordon.bsky.social is now published in PALO @agu.org:
doi.org/10.1029/2025...
Again, I am so happy to be the (Tier II) @climatecerege.bsky.social author!
#AGUPubs
#isoGDGTs
🧪 ⚒️ 🌊
#PaleoSky
(1/4)
Nina Davtian (that's me!) somewhere within the Faculté des Sciences et Technologies (Université de Lorraine, Nancy), with the laptop screen showing the header of her co-authored review paper by Elling, Inglis, et al. (2026) Paleoceanography and Paleoclimatology (https://doi.org/10.1029/2025PA005373)—Nina is the third author of the list. Nina is grinning and showing a FROG pin that she got on 6th July 2026, showing that she is also part of the French Researchers in Organic Geochemistry (FROG) community.
July 7, 2026 at 4:57 PM
ninadavtian.bsky.social
Martens et al. (2026) GCA present a valuable tetraether lipid dataset—isoGDGTs, brGDGTs, and OH-isoGDGTs—to improve our understanding of #TeamArchaea #GDGTs distributions in central Arctic Ocean sediments—surface sediments and sediment cores:
www.sciencedirect.com/science/arti...
🧪 ⚒️ 🌊 🦣
#PaleoSky
Towards understanding archaeal lipid biomarker (GDGT) distributions in central Arctic Ocean sediments
The Arctic is undergoing rapid climate change, warming nearly four times faster than the global average, leading to increasingly ice-free conditions a…
www.sciencedirect.com
June 18, 2026 at 11:36 AM
ninadavtian.bsky.social
To what extent #anaerobic #methanotrophic archaeal inputs may bias sea surf. T° reconstructed with #TeamArchaea hydroxylated isoprenoid tetraether lipids?
@pierrickfenies.bsky.social et al. (2026) Org. Geochem.:
www.sciencedirect.com/science/arti...
#GDGTs #isoGDGTs
🧪 ⚒️ 🌊
Implications for #PaleoSky
Impact of anaerobic methanotrophic archaeal input on hydroxylated isoprenoid GDGT-derived temperatures
Hydroxylated isoprenoidal glycerol dialkyl glycerol tetraethers (OH-isoGDGTs) are used as sea surface temperature (SST) proxies through the RI-OH and …
www.sciencedirect.com
June 11, 2026 at 4:51 PM
ninadavtian.bsky.social
I will talk about my latest piece of work this afternoon at #EGU26!
@egu-cl.bsky.social
@climatecerege.bsky.social
#TeamArchaea #isoGDGTs #GDGTs
🧪 ⚒️ 🌊 🦣 👩‍🔬
#PaleoSky
Screenshot taken by Nina Davtian (it’s me!) of her EGU26 presentation slot (EGU26-19334) scheduled on Tuesday 5 May from 16:15 to 16:25 CET. Her on-site presentation title is « Revisiting the thermal bipolar seesaw model from the oceanic perspective by considering novel organic proxies from the Southern Indian Ocean » and the co-authors are Edouard Bard and Alfredo Martínez-García.
May 5, 2026 at 5:54 AM
ninadavtian.bsky.social
Of course, I am part of the @cerege.bsky.social @climatecerege.bsky.social #EGU26 presenters too, as I have a talk tomorrow afternoon:
doi.org/10.5194/egus...
With @amglab.bsky.social.
Featuring hydroxylated #TeamArchaea tetraether lipids!
#GDGTs #isoGDGTs
@egu-cl.bsky.social
🧪 ⚒️ 🌊 🦣 👩‍🔬
(4/4)
Abstract EGU26-19334
doi.org
May 4, 2026 at 7:22 AM
ninadavtian.bsky.social
I want to re-up this #TeamBacteria paper led by @terriblelagarto.pmartoza.com: 👇🏻
doi.org/10.1093/fems...
With @leafwax.bsky.social.
🧪 🦠 🧬
To better know the biological producers of #brGDGTs matters for ⚒️ and #PaleoSky applications.
#GDGTs
April 29, 2026 at 7:35 PM
ninadavtian.bsky.social
Paper #5: Liang et al. (2026) Earth-Science Reviews
🔗: www.sciencedirect.com/science/arti...
#GDGTs #brGDGTs #TeamBacteria
🧪 ⚒️ 🦣 👩‍🔬
#PaleoSky
bsky.app/profile/nina...
(4/7)
April 14, 2026 at 12:42 PM
ninadavtian.bsky.social
Paper #2: Ishii et al. (2026) @egu-cl.bsky.social
🔗: cp.copernicus.org/articles/22/...
Previously introduced by @antarcticabella.bsky.social (see quoted post) and myself.
#GDGTs #isoGDGTs #TeamArchaea
🧪 ⚒️ 🌊 🦣 👩‍🔬
#PaleoSky
bsky.app/profile/anta...
(2/7)
April 14, 2026 at 12:24 PM
ninadavtian.bsky.social
Across Tibetan Plateau and Central Asian lakes, #TeamArchaea tetraether lipids are commonly used as lake-level proxies, but such hydrological proxies have shortcomings too, which motivates this new paper by J. Shang et al. (2026):
www.sciencedirect.com/science/arti...
#GDGTs #isoGDGTs
🧪 ⚒️
#PaleoSky
Assessing the reliability of isoGDGTs lake-level proxies across Tibetan Plateau and Central Asian lakes
Quantitative reconstruction of past lake-level changes remains challenging because robust hydrological proxies are scarce and many existing indicators…
www.sciencedirect.com
March 27, 2026 at 9:43 AM
ninadavtian.bsky.social
Second, I know that one day, we would know what #TeamArchaea hydroxylated tetraether lipids are capable of in the Southern Ocean—not just within the Antarctic Zone—and someone recently achieved a step toward this goal.
I will post more details on this soon!
(2/2)
#GDGTs
#isoGDGTs
🧪 ⚒️ 🌊 👩‍🔬
#PaleoSky
March 18, 2026 at 8:03 AM
ninadavtian.bsky.social
Here are @antarcticabella.bsky.social’s words about her new last-authored paper. 👇🏻
BTW why did I highlight the need for #TeamArchaea hydroxylated tetraether lipids to improve paleothermometry from #isoGDGTs?
First, Ishii et al. agree with this research direction!
(1/2)
#GDGTs
🧪 ⚒️ 🌊 👩‍🔬
#PaleoSky
antarcticabella.bsky.social Bella Duncan @antarcticabella.bsky.social · Mar 17
Super happy for VUW PhD student Hana Ishii to have her first lead author paper published, based on her MSc work at the University of Hokkaido with Osamu Seki and Masanobu Yamamoto. Hana explored Antarctic core-top GDGTs to better understand how distributions change with water mass and temperature.
ninadavtian.bsky.social Dr. Nina Davtian (she/her/hers) @ninadavtian.bsky.social · Mar 17
How to improve paleothermometry from #TeamArchaea tetraether lipids in the Southern Ocean? Involve hydroxylated #isoGDGTs or make the most of non-hydroxylated isoGDGTs?
Hana Ishii et al. (2026) @egu-cl.bsky.social picked the latter:
cp.copernicus.org/articles/22/...
@egu.eu
#GDGTs
🧪 ⚒️ 🌊 👩‍🔬
#PaleoSky
March 18, 2026 at 8:03 AM
ninadavtian.bsky.social
How to improve paleothermometry from #TeamArchaea tetraether lipids in the Southern Ocean? Involve hydroxylated #isoGDGTs or make the most of non-hydroxylated isoGDGTs?
Hana Ishii et al. (2026) @egu-cl.bsky.social picked the latter:
cp.copernicus.org/articles/22/...
@egu.eu
#GDGTs
🧪 ⚒️ 🌊 👩‍🔬
#PaleoSky
New isoprenoid GDGT index as a water mass and temperature proxy in the Southern Ocean
Abstract. The Southern Ocean plays a crucial role in the global carbon cycle, ocean heat transport, and Antarctic ice dynamics. Investigating past variability in the Southern Ocean, including temperat...
cp.copernicus.org
March 17, 2026 at 8:43 AM
ninadavtian.bsky.social
Hey, it’s you @terriblelagarto.pmartoza.com! 👆🏻
#GDGTs
March 2, 2026 at 1:06 PM
ninadavtian.bsky.social
This is a #TeamArchaea GDGT paper that I could not wait to see published in a journal after peer-review!
Addison Rice et al. (2026) PALO @agu.org:
doi.org/10.1029/2025...
With @appysluijs.bsky.social among the co-authors.
#GDGTs #isoGDGTs
🧪 ⚒️ 🌊 👩‍🔬
With implications for #PaleoSky
Seasonal Changes in Marine Archaeal Tetraether Lipid Export Depth Linked to Net Primary Productivity
Global marine sediment traps record seasonal changes in archeal tetraether lipid export from two depth-differentiated ecological groups Contribution of shallow-clade archaeal tetraethers increase...
doi.org
February 20, 2026 at 10:21 PM
ninadavtian.bsky.social
Second, this #TeamBacteria study led by Sai Ke:
www.sciencedirect.com/science/arti...
Involving two bacterial membrane lipid groups—3-hydroxy fatty acids and branched tetraether lipids—and last authored by @arnaudhuguet.bsky.social.
#IDWGS
#WomenInScienceDay
#brGDGTs
🧪 ⚒️ 👩‍🔬
(2/2)
Evaluation of bacterial membrane lipids (3-hydroxy fatty acids and branched GDGTs) as environmental proxies in lakes of the French Alps and southern Chile
Revealing high-resolution paleoclimate records in lakes is essential for our understanding of the climate system. To date, the ubiquitous branched gly…
www.sciencedirect.com
February 11, 2026 at 7:08 PM
ninadavtian.bsky.social
It’s #WomenInScienceDay!
Let me introduce two recent papers led by #WomenInSTEM.
First, this multi-biomarker study led by Madeleine Santos:
doi.org/10.5194/cp-2...
Featuring archaeal and bacterial tetraether lipids and last authored by @julielattaud.bsky.social.
#IDWGS
#GDGTs
🧪 ⚒️ 🌊 👩‍🔬
#PaleoSky
(1/2)
Holocene sea ice and paleoenvironment conditions in the Beaufort Sea (Canadian Arctic) reconstructed with lipid biomarkers
Abstract. The Beaufort Sea region in the Canadian Arctic has undergone substantial sea ice loss in recent decades, primarily driven by anthropogenic climate warming. To place these changes within the ...
doi.org
February 11, 2026 at 7:08 PM
ninadavtian.bsky.social
The previous Biogeosciences highlight paper for @climatecerege.bsky.social is my co-authored marine GDGT « cookbook » review paper:
doi.org/10.5194/bg-2...
🧪 ⚒️ 🌊
#PaleoSky
Reviews and syntheses: Best practices for the application of marine GDGTs as proxy for paleotemperatures: sampling, processing, analyses, interpretation, and archiving protocols
Abstract. Marine glycerol dialkyl glycerol tetraethers (GDGTs) are used in various proxies (such as TEX86) to reconstruct past ocean temperatures. Over 20 years of improvements in GDGT sample processi...
doi.org
December 17, 2025 at 7:01 PM