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UC Davis - Poulin Research Group

Addressing issues of metal contaminants in our environment
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Welcome!

Welcome! The Poulin lab is a young group of multidisciplinary researchers in the Environmental Toxicology Department at UC Davis. Our research focuses on understanding and addressing issues of metal contaminants in man-made and natural environments. The research carried out by our group helps decrease the amount of metals humans and wildlife are exposed to and improves the understanding of the toxicologic pathways of metals.

Recent Lab News

Congrats to Bryce Cook for completing his MS (!), and welcome to new PhD student Ania Szlembarska and undergraduate researcher Emily Richter

September 16, 2023

Congrats to Ben Peterson on his new paper in ISME(!!), which shows the diversity of microorganisms that can methylate mercury in reservoirs!

August 14, 2023

New study published in ES&T Letters highlights the sensitivity of dissolved organic sulfur to photo-oxidation

May 07, 2023

New ESPI paper on the coupled biogeochemical and hydrologic processes controlling methylmercury in a river-reservoir system

April 28, 2023

New publication by Ben Peterson on the Florida Everglades!

March 30, 2023
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HgIsotopebirds

New Conceptual Model of Mercury Toxicology in Birds

Our new studies define a new conceptual model to understand mercury detoxification in birds.

Water outflow of the Hells Canyon hydroelectric dam, Snake River.
Hells Canyon Dam, Snake River (Idaho) (credit: Brett Poulin)
Sun peaking through the clouds on base camp on Cape Krusenstern National Monument, Alaska.
Cape Krusenstern Nat. Monument, Alaska (credit: Brett Poulin)
Sawgrass marsh of the Florida Everglades
"Sea of Grass", Florida Everglades (credit: Brett Poulin)
A peat core from an Alaska wetland.
Peat core from Frozen Pond Fen, Alaska (credit: Brett Poulin)
Amber colored pore water sample collected from a wetland
Pore water, Florida Everglades (credit: Brett Poulin)
Flask of water sample and field scientist in Alaskan wetland.
Flasks for dissolved gaseous mercury measurements, Eight Mile Lake, Denali State Park Alaska (credit: Brett Poulin)
Graffiti of a fish was the words "Gone Fishing" painted on dam wall
Snake River Dam Graffiti (credit: Brett Poulin)
X-ray emission spectrometer at the European Synchrotron Radiation Facility
X-ray Emission Spectrometer for tender X-ray range, ESRF ID26 (credit: Brett Poulin)
Six flasks with a gradient in color showing dissolved organic matter gradient of field samples.
Dissolved Organic Matter Across A Wetland Gradient, Frozen Pond Fen Alaska (Credit: Brett Poulin)
Brett Poulin (principle investigator) sampling a wetland.
Beaver Pond in Noatak Nat. Preserve, Alaska (credit: Jon O'Donnell)
Airboat with field crew sampling wetlands in the Florida Everglades.
Sampling Everglades wetlands by airboat (credit: Brett Poulin)
Tissue samples mounted on a sample holder for X-ray measurements.
Tissue samples for Hg speciation by HERFD-XANES, ESRF ID26 (credit: Brett Poulin)
A project member holding a soil core from an Arctic wetland.
Postdoc researcher Ben Peterson sampling a sediment core from Rabbit Creek beaver pond for field experimentation (Cape Krusenstern NP, Alaska) (credit: Brett Poulin)
Student kneeling in river sampling pore water
PhD student Virginia Krause collecting pore water along the Snake River (credit: Brett Poulin)
picture of laboratory group members at a Sacramento Kings basketball game
Lab group outing at the Sacramento Kings basketball game (Feb., 2023)
Photo of undergraduate Jeff Murray presenting his undergraduate research poster
Jeff Murray presenting his research on mercury in fish in the Arctic at the UC Davis Undergraduate Research, Scholarship & Creative Activities Conference (April, 2023)
A student sampling water from her lake
Comfort Chukwuere (PhD student) sampling water at depth in a selenium-impaired lake in Michigan.
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