Marchetti Lab
@marchettilab.bsky.social
Biological oceanography lab at Carolina studying phytoplankton ecophysiology, biogeochemistry and genomics.
Congratulations to Margarita and Morgan Pavelsky who’s image of the diatom Corethron isolated from the Galápagos Islands is the new face of the ISME journal.
academic.oup.com/ismej/issue/...
academic.oup.com/ismej/issue/...
Volume 20 Issue 1 | The ISME Journal | Oxford Academic
academic.oup.com
January 24, 2026 at 3:08 PM
Congratulations to Margarita and Morgan Pavelsky who’s image of the diatom Corethron isolated from the Galápagos Islands is the new face of the ISME journal.
academic.oup.com/ismej/issue/...
academic.oup.com/ismej/issue/...
A bit of a write-up about our research cruise in the Galapagos last summer.
www.unc.edu/posts/2026/0...
www.unc.edu/posts/2026/0...
UNC researchers set sail for the Galapagos | UNC-Chapel Hill
Thanks to the National Science Foundation and the Galapagos Science Center, Professors Adrian Marchetti and Harvey Seim led colleagues and students on a research trip to study the Galapagos marine eco...
www.unc.edu
January 22, 2026 at 4:10 PM
A bit of a write-up about our research cruise in the Galapagos last summer.
www.unc.edu/posts/2026/0...
www.unc.edu/posts/2026/0...
Congrats to Margarita who successfully defended her MSc thesis today! Margarita investigated growth and nutrient kinetics in a variety of phytoplankton species she isolated from the Galapagos Archipelago. Turns out size really does matter…in phytoplankton I mean.
October 23, 2025 at 11:17 PM
Congrats to Margarita who successfully defended her MSc thesis today! Margarita investigated growth and nutrient kinetics in a variety of phytoplankton species she isolated from the Galapagos Archipelago. Turns out size really does matter…in phytoplankton I mean.
Meredith's new paper in Journal of Phycology explores how the small chlorophyte Micromonas from the Northeast Pacific Ocean can contribute to carbon export and it's response to iron limitation.
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
September 22, 2025 at 10:17 PM
Meredith's new paper in Journal of Phycology explores how the small chlorophyte Micromonas from the Northeast Pacific Ocean can contribute to carbon export and it's response to iron limitation.
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
In the past few months we have published three papers from the lab, which I will subsequently describe. Congrats to Se Hyeon, Johnson and Prisca for getting these papers across the finish line. I’m super lucky to have had the opportunity to work with these great scientists!
July 20, 2025 at 1:55 AM
In the past few months we have published three papers from the lab, which I will subsequently describe. Congrats to Se Hyeon, Johnson and Prisca for getting these papers across the finish line. I’m super lucky to have had the opportunity to work with these great scientists!
Looking forward to our research cruise starting on July 30 on the R/V Marcus Langseth related to our NSF-funded project. Mobilization in San Diego was a success. Ship is now en route to the Equatorial Pacific!
July 16, 2025 at 6:38 PM
Looking forward to our research cruise starting on July 30 on the R/V Marcus Langseth related to our NSF-funded project. Mobilization in San Diego was a success. Ship is now en route to the Equatorial Pacific!
It was great to catch up with Raquel and Jason in Victoria, BC. The Marchetti Lab will miss you Raquel! Safe travels.
July 12, 2025 at 7:37 PM
It was great to catch up with Raquel and Jason in Victoria, BC. The Marchetti Lab will miss you Raquel! Safe travels.
Reposted by Marchetti Lab
DO NOT GIVE UP!
Our advocacy is working.
A key Senate committee has indicated that it will reject Trump’s proposed cuts to science agencies including NASA and the NSF.
Keep speaking up and calling your electeds 🗣️🗣️🗣️
Our advocacy is working.
A key Senate committee has indicated that it will reject Trump’s proposed cuts to science agencies including NASA and the NSF.
Keep speaking up and calling your electeds 🗣️🗣️🗣️
July 11, 2025 at 7:03 PM
DO NOT GIVE UP!
Our advocacy is working.
A key Senate committee has indicated that it will reject Trump’s proposed cuts to science agencies including NASA and the NSF.
Keep speaking up and calling your electeds 🗣️🗣️🗣️
Our advocacy is working.
A key Senate committee has indicated that it will reject Trump’s proposed cuts to science agencies including NASA and the NSF.
Keep speaking up and calling your electeds 🗣️🗣️🗣️
We call this Margarita cubed. Margarita eating a Margherita pizza while drinking a Margarita. A toast to Raquel who will be moving on from the Marchetti Lab very shortly. We wish her all the best!
June 13, 2025 at 1:25 PM
We call this Margarita cubed. Margarita eating a Margherita pizza while drinking a Margarita. A toast to Raquel who will be moving on from the Marchetti Lab very shortly. We wish her all the best!
Check out Margarita’s chemostat setup to examine shifts in nutrient quotas in Galapagos diatoms throughout diel cycles. She will be sampling every three hours over the next two days!! 🥱
May 9, 2025 at 9:54 PM
Check out Margarita’s chemostat setup to examine shifts in nutrient quotas in Galapagos diatoms throughout diel cycles. She will be sampling every three hours over the next two days!! 🥱
We had an amazing group of undergraduates in the Marchetti Lab this year. Their research spanned the globe from the Southern Ocean to the Galapagos. Thanks a bunch to Cammie, Abby1, Abby2 and Ankit. They all put in a ton of hours in the lab and are now moving on to bigger and better places!
May 2, 2025 at 11:20 PM
We had an amazing group of undergraduates in the Marchetti Lab this year. Their research spanned the globe from the Southern Ocean to the Galapagos. Thanks a bunch to Cammie, Abby1, Abby2 and Ankit. They all put in a ton of hours in the lab and are now moving on to bigger and better places!
Congrats to undergraduate researcher Cammie Zehner who presented her research conducted with Emily Speciale on phytoplankton dynamics in the California Current upwelling zone at the EMES symposium!
April 11, 2025 at 6:18 PM
Congrats to undergraduate researcher Cammie Zehner who presented her research conducted with Emily Speciale on phytoplankton dynamics in the California Current upwelling zone at the EMES symposium!
Reposted by Marchetti Lab
The US has three bases in Antarctica. Besides the important science done there, they're a proxy for geopolitical power. China just built its fifth base in Antarctica, so if the US pulls back, guess who will take over?
Does US science have a future in Antarctica? Trump cuts threaten to cancel fieldwork and more
Funding for the National Science Foundation, which finances research at US bases on the icy continent, has already been reduced, and the agency faces steeper cuts soon.
www.nature.com
April 11, 2025 at 1:00 AM
The US has three bases in Antarctica. Besides the important science done there, they're a proxy for geopolitical power. China just built its fifth base in Antarctica, so if the US pulls back, guess who will take over?
Reposted by Marchetti Lab
This cut is “a heartbreaker”, says Rob Denton, a biologist at Marian University in Indianapolis, Indiana, who has previously reviewed applications for the fellowship.
https://go.nature.com/3Yp58Sh
https://go.nature.com/3Yp58Sh
NSF slashes prestigious PhD fellowship awards by half
US National Science Foundation announces lowest number of Graduate Research Fellowship Programme recipients in 15 years.
go.nature.com
April 8, 2025 at 10:23 PM
This cut is “a heartbreaker”, says Rob Denton, a biologist at Marian University in Indianapolis, Indiana, who has previously reviewed applications for the fellowship.
https://go.nature.com/3Yp58Sh
https://go.nature.com/3Yp58Sh
Congrats to Emily who successfully defended her MSc thesis on the effects of iron on mixotrophy in the California Upwelling Zone!
April 7, 2025 at 10:06 PM
Congrats to Emily who successfully defended her MSc thesis on the effects of iron on mixotrophy in the California Upwelling Zone!
Reposted by Marchetti Lab
Had a great time at #ASLO25 with @unc-emes.bsky.social & @marchettilab.bsky.social talking all things marine 🌊
April 5, 2025 at 5:24 PM
Had a great time at #ASLO25 with @unc-emes.bsky.social & @marchettilab.bsky.social talking all things marine 🌊
Reposted by Marchetti Lab
The number of new grants handed out by the National Science Foundation since President Donald Trump took office has fallen by nearly 50% compared with the same 2-month period 1 year ago. scim.ag/42dCJjc
NSF has awarded almost 50% fewer grants since Trump took office
The reasons aren’t clear—and the agency’s director claims the president’s policies haven’t slowed grant awards
scim.ag
April 1, 2025 at 1:35 PM
The number of new grants handed out by the National Science Foundation since President Donald Trump took office has fallen by nearly 50% compared with the same 2-month period 1 year ago. scim.ag/42dCJjc
Reposted by Marchetti Lab
March 31, 2025 at 1:56 PM
The dynamic duo of Margarita and Abby presenting their research on phytoplankton dynamics in the Galapagos at ASLO in Charlotte NC. #ASLO25
March 29, 2025 at 11:22 PM
The dynamic duo of Margarita and Abby presenting their research on phytoplankton dynamics in the Galapagos at ASLO in Charlotte NC. #ASLO25
Definitely something we need to pay attention to. www.science.org/content/arti...
More carbon dioxide in oceans could harm carbon-eating microbes, speed climate change
Increased ocean acidity could reduce populations of phytoplankton more than previously thought
www.science.org
March 29, 2025 at 2:47 PM
Definitely something we need to pay attention to. www.science.org/content/arti...
Smaller members of the Marchetti Lab presenting massive research findings at the Aquatic Sciences meeting in Charlotte NC @aslo.org. Go Raquel!
March 29, 2025 at 2:42 PM
Smaller members of the Marchetti Lab presenting massive research findings at the Aquatic Sciences meeting in Charlotte NC @aslo.org. Go Raquel!
Reposted by Marchetti Lab
“The general public thinks that if you’re a college professor, you get paid by the school,” says Zoe McElligott, who studies neural circuits at a state university. But for 'soft money' faculty members, that’s not the case.
https://go.nature.com/4jcrDSA
https://go.nature.com/4jcrDSA
These US labs risk imminent closure after Trump cuts
US researchers who must forage for their own salary by finding grants fear they will be the first to go as federal research dollars disappear.
go.nature.com
March 28, 2025 at 9:56 PM
“The general public thinks that if you’re a college professor, you get paid by the school,” says Zoe McElligott, who studies neural circuits at a state university. But for 'soft money' faculty members, that’s not the case.
https://go.nature.com/4jcrDSA
https://go.nature.com/4jcrDSA
Reposted by Marchetti Lab
Gordon Research Conference in Polar Marine Science 2025 was a success! Had a great time discussing all things related to sea ice & proton-pumping rhodopsins, and made new friends along the way. Looking forward to the next one!
March 28, 2025 at 6:10 PM
Gordon Research Conference in Polar Marine Science 2025 was a success! Had a great time discussing all things related to sea ice & proton-pumping rhodopsins, and made new friends along the way. Looking forward to the next one!