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Montana Stone's award-winning photo featured by Brown's Medical School

2/28/2025

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The magazine Medicine@Brown featured Montana Stone's award-winning photo of "Zorro" -- a culpeo fox -- taken at our long-term ecological research site in Fray Jorge National Park in Chile. It's a fantastic shot of an amazing, and poorly known predator. As the BioMed communications team said, this image from Montana's field work is a poignant way to remind people that our mission in the Division is to advance the "health of people AND planet." We always love to remind people that our health is intimately, and inextricably, linked to what's happening in nature and around the planet.
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In spring 2024, I spent a month collecting data for my doctoral research as part of the longest-running ecological experiment of its type in Fray Jorge National Park, Chile. One evening, after a long day of fieldwork under the intense Chilean sun, an Andean zorro (Lycalopex culpaeus) emerged near our field station. The fox, both curious and cautious, watched us intently as we wrapped up for the day. Sensing the rare opportunity, I quickly captured a photo before it vanished into the brush. Experiences like this fuel my determination to understand the cascading impacts on ecosystems if remarkable creatures like the Andean zorro were to face extinction
​-Montana Stone

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Videvall et al. published article on giraffe diets and microbiomes

2/28/2025

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With some much-anticipated fanfare in a press release from Uppsala University, Elin led a paper on describing the diets and microbiomes of three giraffe species that all live in close proximity to each other around the equator in Kenya. This work was initiated together with Brian Gill and Peter Lokeny many years ago.

This paper involved close collaboration with colleagues at the Mpala Research Centre, The National Museums of Kenya, and Giraffe Conservation Foundation. It represents a meaningful step toward better understanding the ecology of these amazing, but poorly understood endangered species -- and it directly informs on-the-ground conservation efforts aimed at ensuring long-term access to nutritious resources to fuel the recovery of populations.

The original article was published open access in Global Ecology and Conservation and the press release is entitled "Unexpected discoveries in study of giraffe gut flora."
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Paper on what fuels wildlife migrations across Yellowstone

9/19/2024

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A new paper from the lab was led by postdoc Bethan Littleford-Colquhoun and published in Royal Society Open Science: "Body size modulates the extent of seasonal diet switching by large mammalian herbivores in Yellowstone National Park." The paper is free to read and download.

Beth used cutting-edge genetic and GPS-tracking technologies to test age-old ideas about why animals select the foods that they do. The work involved collaboration from experts in wildlife ecology and management, genomics, remote sensing, and botany -- with contributions from the National Park Service, several citizen science organizations, and funding from NSF as well as the Department of Interior. 

As Beth summarized in an interview with News@Brown, we have come to more accurately understand wildlife populations as a collection of animals that can respond individualistically to changes in their environment. From summer to winter, animals have to radically change the kinds of foods they eat. But it's not just that: they also have to take care to update their overall foraging strategy as they shift from foraging socially as part of a large herd to foraging more independently for their own unique sets of resources. 

The news summary by Corrie Pikul is available here: How do coexisting animals find enough to eat? Biologists unlock insights into foraging habits in Yellowstone
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Elephant foraging cohesion paper published by Royal Society

7/14/2023

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The paper led by Brian Gill on individual-level tracking of elephant diets -- Foraging History of Individual Elephants Using DNA Metabarcoding -- was just published by Royal Society Open Science. We are very proud of this paper, which revisits a set of classic studies on seasonal diet switching by elephants using stable isotopes in hair that were led by coauthors Thure Cerling and George Wittemeyer. The work was made possible with support in the field from Save the Elephants and with the botanical expertise of coauthor Paul Musili from the National Museums of Kenya.

The paper was accompanied by a great summary by Corrie Pikul and featured on the Brown University homepage: Similar to Humans, Elephants Vary What they Eat for Dinner. 

The paper also attracted attention in the media, including interviews on BBC Television and Times Radio. Some nice coverage of the study was also provided by BBC (with hilarious photos), Newsweek, ZME Science, and The Times. 
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Ezequiel helps capture and study the first Giant Armadillos in Argentina

1/30/2023

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Late last year, Ezequiel 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.

An article was published entitled, "Rosenda, la primera tatú carreta monitoreada en el Chaco"

Great work, Ezequiel! 
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Bianca Brown Featured in Brown Alumni Magazine

6/30/2021

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Bianca Brown was featured as one of seven "exceptional alumni" profiled by the Brown Alumni Magazine in 2021. As quoted below, the article "Emerging Victorious" features seven of the many exemplary students who thrived and graduated despite the pandemic. It's a very fitting and well deserved highlight for Bianca, who we are incredibly proud to have had as the first PhD to fledge from the lab. Congratulations, Bianca, we can't wait to see all the good you do in your life and career!
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Photo from Brown Alumni Magazine Feature
It’s been a year. For 13 months, Brown students were isolated, masked, and tested both literally and figuratively. Each one of them performedexceptionally, making it through COVID with determination and resilience, but we can’t fit 2,505 stories into this 10-page feature. So we’re focusing on just seven of the countless exemplary students who earned bachelor’s and advanced degrees this year. Despite having a final year at brown so challenging that it’s literally one for the history books, they’ve created, achieved, and helped others. Thanks to the pandemic, those able to exit may 2 through the Van Wickle gates in person had no families or alums applauding their achievement.These pages will have to serve as our applause--and we ask you to imagine, as you read, the hundreds of other students whose stories remain untold, and send them all a silent cheer.
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Recent papers highlighted for impact

12/6/2019

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A pair of recent papers from the lab were highlighted for the creative use of DNA metabarcoding to solve problems and ask new questions in fields that span ecology and biomedical science.

1. Our recent paper documenting variation in diet-microbiome linkages in African megafauna was highlighted on the cover of PNAS, Brown University's news, The Division of Biomedicine's 'Kudos' memo, and in the media. This open access paper reflects the results of a long-term collaboration with Rob Pringle from Princeton, Paul Musili from the National Museums of Kenya, a creative honors thesis by Julianna Hsing, and the microbiome-bioinformatics chops of current grad student Bianca Brown.

2. ​Our recent paper in mSystems creatively translated the DNA metabarcoding approaches that we've been using for wildlife research into a biomedical context to evaluate the plant component of human diets. Using DNA-based evidence of human diet composition could be highly complementary to the current standard of asking human subjects to maintain diet logs in research on human health and nutrition. The paper was highlighted as Editor's pick in the area of Clinical Science and Epidemiology by the journal, as well as in a thoughtful commentary by Frank Maixner, who further highlighted the connections between this work and the fields of archaeology and ancient DNA. The paper was co-led by Aspen Reese based on samples from a prior experimental study investigating the influences of diet interventions on human gut microbiomes, which was led by Lawrence David.
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Paper featured on the cover of Nature & in media

6/5/2019

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New research combining large field experiments and molecular ecology published today in Nature. The paper is featured in a Nature News & Views article by Oswald Schmitz, a 3-min Nature Video, a great PBS NOVA article by Katherine Wu, among others.
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Pellegrini's 'bark thickness' paper published in Ecology Letters

1/23/2017

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Proud to contribute to a paper by Adam Pellegrini and coauthors that was just published in Ecology Letters: "Convergence of bark investment according to fire and climate structures ecosystem vulnerability to future change" (PDF).

Our work finds that some ecosystems contain tree species that are well adapted to the predicted changes in global fire regimes due to climate change, while others are composed of trees that may be particularly vulnerable. The paper was highlighted on Princeton's homepage and in Nature News!
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