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A new peer-reviewed study led by researchers at Brown University in partnership with the Rhode Island Department of Environmental Management revealed that diamondback terrapins (Malaclemys terrapin), iconic turtles of America’s salt marshes, face heightened risks at the northern edge of their range in New England. First large-scale genetic study of diamondback terrapins across their northern range highlights urgent conservation needs as federal endangered species listing is considered.
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An article by science journalist Livi Milloway chronicles an "ah-ha" moment we had in Yellowstone National Park. 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. Rethinking how we classify animals based on what they eat—and what it means for wildlife management Led by Hannah Hoff, in collaboration with the National Park Service and the Brown University Herbarium, the lab just published a blockbuster paper that summarizes, critiques, and enhances how ecologists tend to talk about what wildlife eat.
The Apportionment of Dietary Diversity in Wildlife was published by PNAS on July 14th. There are some surprising and potentially sensitive elements to the story—both for how we monitor and manage wildlife populations and for how we address our implicit biases when observing and reporting on wildlife as scientists. DNA sequencing to meet global biodiversity goals: Interview with Tyler Kartzinel Tyler sat down for an interview with Abhishyant Kidangoor of Mongabay to discuss our recent Mini Review in Molecular Ecology, entitled Global Availability of Plant DNA Barcodes as Genomic Resources to Support Basic and Policy-Relevant Biodiversity Research.
You can read our conversation here at Mongabay. It covers topics that are among the most important for ensuring the reliability of DNA-based biodiversity research, including equitable access to the benefits arising from this technology and the reputations of all who use it. The work was also highlighted in Spanish by El Mostrador: Código de barras de plantas: herramienta genética clave que busca ser fortalecida en el sur global A new paper from the Kartzinel Lab is the first to compare the parasites of wild two- and three-toed sloths living in both primary forests and urban habitats. Led by Ezequiel Vanderhoeven, the paper Host specificity of gastrointestinal parasites in free-ranging sloths from Costa Rica was published in partnership with our friends at Sloth Conservation Foundation.
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." The upshot: The gerbils that are the best jumpers are not necessarily the best maneuverers, and vice versa. Led by Courtney Reed, the Kartzinel Lab ran a series of controlled laboratory tests to discover that each individual's decision in the pivotal moment it meets a predator may be enabled by -- or constrained by -- the anatomy of its hind limbs. The paper Distinct morphological drivers of jumping and maneuvering performance in gerbils was published in Journal of Experimental Biology!
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 Congratulations to Bianca Brown, microbiome scientist extraordinaire, on her publication appearing today in Ecosphere! Spatiotemporal variation in the gut microbiomes of co-occurring wild rodent species is freely available via open access. It is a rare example of the type of insightful work that can develop through collaborations involving field, lab, and big-data analytical approaches to really understand what's going on with wildlife. It is part of our long-term collaboration with the UHURU project at Mpala Research Centre in Kenya.
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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