#TeamBacteria
Here is a paper led by a former PhD student and which further shows that indicators based on bacterial tetraether lipids in lakes consistently need refinement:
doi.org/10.1029/2025...
With @nemiahladd.bsky.social and @cindydejonge.bsky.social
#brGDGTs #TeamBacteria
🧪 ⚒️ 👩‍🔬
Implications for #PaleoSky
Controls on brGDGT Production in the Seasonally Anoxic Water Column and Sediments of Rotsee (Lake Rot)
MBT'5ME values in Rotsee are influenced by lake stratification while the isomer ratio (IR) more directly reflects epilimnion temperature MBT'5ME and IR are strongly correlated, providing a diagno...
doi.org
December 19, 2025 at 8:56 AM
Once again, marine tetraether lipids also include bacterial #brGDGTs!
See, for instance, this new marine brGDGT paper by @drxiaowj.bsky.social et al., just published in Geochimica et Cosmochimica Acta:
www.sciencedirect.com/science/arti...
#GDGTs #TeamBacteria
🧪 ⚒️ 🌊
With implications for #PaleoSky
Global distribution of marine bacterial BrGDGTs in sediments: patterns and implications
Branched glycerol dialkyl glycerol tetraethers (brGDGTs), originally linked to terrestrial bacteria for paleoenvironmental reconstructions, are now al…
www.sciencedirect.com
December 10, 2025 at 2:28 PM
Congrats to @aecpaleo.bsky.social on her new first authored paper, just published in @egubg.bsky.social!
doi.org/10.5194/bg-2...
With @cindydejonge.bsky.social and @sebjoannin.bsky.social.
Please also check out @sebjoannin.bsky.social’s post! 👇🏻
#brGDGTs #TeamBacteria
@egu.eu
🧪 ⚒️ 🦣 👩‍🔬
#PaleoSky
December 8, 2025 at 8:03 AM
Yanwu Duan is the first author of two new papers which collectively support both #TeamBacteria and #TeamArchaea from the #GDGTs perspective.
Bacterial lipids #brGDGTs paper:
www.sciencedirect.com/science/arti...
Archaeal lipids #isoGDGTs paper:
www.sciencedirect.com/science/arti...
🧪 ⚒️
#PaleoSky
Divergent environmental controls on branched tetraethers along precipitation gradients in soils of the Tibetan Plateau
Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are widely used for terrestrial paleotemperature reconstructions, yet their environmental con…
www.sciencedirect.com
November 8, 2025 at 8:48 AM
To all #TeamBacteria and team #brGDGTs members:
L. Dugerdil et al. (2025) PALO @agu.org have a new paper!
doi.org/10.1029/2025...
With @sebjoannin.bsky.social and @aecpaleo.bsky.social.
Also with my former PhD co-supervisor G. Ménot, who helped me to join team #GDGTs.
🧪 ⚒️ 🦣
#PaleoSky
Boosted Regression Trees Machine Learning Method Improves the brGDGT‐Based Climate Reconstruction in Drylands
Machine Learning methods reduce confounding effects and error in Branched glycerol dialkyl glycerol tetraether climate calibrations Boosted Regression Trees yields better results than Random Fore...
doi.org
October 26, 2025 at 12:02 PM
How to use bacterial membrane lipids, named #brGDGTs, for reliable paleo-temperature reconstructions from Quaternary lake sediments?
The new paper quoted below further addresses this important question! 👇🏻
Congrats @geochemem.bsky.social and co-authors!
#GDGTs #TeamBacteria
🧪 ⚒️ 🦣 👩‍🔬
#PaleoSky
September 19, 2025 at 1:48 PM
RFK Jr celebrated the release of the MAHA report by downing raw milk shooters in the White House with influencer Paul Saladino. Hazards of raw milk include Listeria, Salmonella, Campylobacter, Yersinia, E. coli O157:H7, and now-- avian flu.
May 31, 2025 at 5:41 PM
May 13, 2025 at 6:04 PM
Health and Human Services Secretary Robert F. Kennedy Jr. posted photos of himself and his grandchildren in waters in Rock Creek Park.

An ongoing National Park Service advisory warns against coming in contact with the water “due to high bacteria levels.”
nbcnews.to/4jjTq3f
May 13, 2025 at 3:23 PM
May 13, 2025 at 11:23 AM
#TeamBacteria 🍸🍸
May 13, 2025 at 1:43 AM
Just this once, #TeamBacteria.
May 13, 2025 at 1:06 AM
May 13, 2025 at 12:29 AM
My regular poster presentation will contribute to the CL5.4 session convened by e.g. @olakwiecen3.bsky.social and @cindydejonge.bsky.social.

It goes without saying that I will contribute for both #TeamArchaea (regular and hydroxylated #iGDGTs) and #TeamBacteria (#brGDGTs) at #EGU24 this year! (3/5)
April 14, 2024 at 5:03 PM