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Kartzinel Lab​ News

Learning from the past in Yukon

1/12/2026

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Reconstructing 10,000 Years of Caribou Diets from Melting Yukon Ice Patches

Dr. Carson Hedberg and team on an expedition to the Gladstone Ice Patch
Dr. Carson Hedberg and team on an expedition to the Gladstone Ice Patch
A prestigious NSF Postdoctoral Fellowship from the Office of Polar Programs that was awarded to Carson Hedberg is powering a new Kartzinel Lab project in the Yukon: using ancient DNA preserved in towering alpine ice patches to reconstruct thousands of years of change in caribou diets since the end of the last Ice Age. By sequencing genetic traces of food that have been locked inside caribou dung and literally frozen in time, Carson is asking how these animals have weathered past climate shifts—and what this can tell us about prospects for their future.

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Story behind the science: Yellowstone Wildlife Diets

9/8/2025

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Story behind the science: Yellowstone wildlife diets

Rethinking how we classify animals based on what they eat—and what it means for wildlife management
An article by science journalist Livi Milloway chronicles an "ah-ha" moment we had in our Yellowstone National Park research project. The story published in The Wildlife Society Bulletin, titled An herbivore by any other name, unpacks how Hannah Hoff's recent paper in PNAS challenges the status quo when it comes to how scientists study and understand wildlife diets. 

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Ezequiel helps capture and study the first Giant Armadillos in Argentina

1/30/2023

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Fieldwork: first giant armadillos studied in Argentina

Ezequiel Vanderhoeven from the Kartzinel Lab at Brown University participated in the capture of the first two Giant Armadillos from Argentina. The animals were sampled and outfitted with tracking devices to understand more about the health and ecology of their population. This amazing species is very rare, and its global population is listed as Vulnerable and Declining on the Red List of Endangered Species. Knowledge of how they move and find enough to eat in their modern habitats will be essential for developing lasting conservation strategies.

An article was published entitled, "Rosenda, la primera tatú carreta monitoreada en el Chaco"
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Lab in action at Yellowstone

8/3/2022

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Lab in action at Yellowstone National Park

PictureBeth, Maddy, and Hannah at the north entrance to Yellowstone in Gardiner -- weeks after the 2022 floods (and moments after meeting a Prairie Rattlesnake at the Arch)!

It feels good to have more of the lab getting back into the swing of fieldwork after the worst years of the early pandemic! The lab has always maintained some field activity throughout the pandemic. Ezequiel Vanderhoeven had been working remote from field sites across Argentina; Robert Ang'ila and Peter Lokeny had been keeping active at Mpala in Kenya; Colin Donihue had led  the lizard team in field and lab studies across New England; Amanda Lyons led the terrapin conservation genomics team around the northeastern United States. But a lot of us had to cut back or go it alone more than we would have liked. The tide finally began to turn in 2022, though!

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2019 Diamondback Terrapin Conservation Genetics Field Season

4/16/2019

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2019 Diamondback terrapin conservation genetics field season

Amanda Lyons and Bianca Brown braved the rainy weather to kick off our terrapin field season. Diamondback terrapins are the only "critically imperiled" reptile in Rhode Island, and a major conservation priority for the state. Amanda and Bianca were joined by our collaborators from the Rhode Island Department of Environmental Management and The Roger Williams Park Zoo. Our research goal is to understand how genetically interconnected are the remaining few terrapin populations in the state, and relatedness to populations from neighboring states. This research is supported in part by a 2019 Voss Undergraduate Research Fellowship in Environmental Science and Communication to Amanda Lyons. Congratulations Amanda, and thanks IBES for supporting this research. 
Amanda Lyons
Amanda Lyons
Bianca Brown
Bianca Brown
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Winter fieldwork in Kenya

2/28/2018

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Winter fieldwork in Kenya

Several members of the lab are just back from an extremely productive field trip. Highlights include a DNA barcoding workshop at the National Museums of Kenya (led by Tyler Kartzinel and of Brown University Brian Gill, and Director Paul Musili from the East African Herbarium), many pre-dawn captures of small mammals (led by Bianca Brown and collaborators from the Goheen lab), and many trees and and megaherbivores counted (led by Brian Gill and Peter Lokeny). Now the team is breaking in the new lab -- copious amounts of data to report soon! Photos of the highlights are below. 

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In the Field with Biodiversity Initiative

1/13/2017

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In the field with Biodiversity Initiative

Thanks to the inspiring organization — Biodiversity Initiative — for inviting our lab to join research and conservation efforts in the understudied tropical forests of Equatorial Guinea.
Highlights from a brief visit include:
  1. A workshop with government officials (and other stakeholders) to discuss opportunities to better conserve wildlife and protected areas.
  2. Hiking with a bushmeat hunter to learn about the first links in the wildlife trafficking chain—the way legal trapping of wildlife by local subsistence hunters can feed into international crime through the trade of endangered species, like pangolin. (Importantly, hunting was forbidden during my visit.)​
  3. The magnificence of a primary Congo Rainforest on Equatorial Guinea's mainland.

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Dr. Tyler Kartzinel
Department of Ecology, Evolution, and Organismal Biology
Institute at Brown for Environment and Society
Brown University
​Address: 85 Waterman Street, Providence, Rhode Island 02912 USA
Office: 246(B)
​Lab (pre-PCR): 244
​Lab (post-PCR): 230
​Phone: 1-401-863-5851
tyler_kartzinel[at]brown.edu
Disclaimer: views expressed on this site are those of the author. They should not be interpreted as opinions or policies held by his employer, collaborators, or lab members. Mention of trade names or commercial products does not constitute endorsement.

Copyright 2017-2026 © Tyler Kartzinel
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