Nature & Conservation

From California to the Congo Basin, we use everything from advanced genomics to ancient tree rings to study the world’s complex, beautiful and dynamic ecosystems and how to protect them.

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Project Phoenix 2024 Annual Report

The community birding initiative is thrilled to present its 2024 Year-End report!


Blog

Study reveals devastating 22% decline in U.S. butterflies

Butterflies across the U.S. are disappearing at an alarming rate, according to a new study co-authored by UCLA ecologist Travis Longcore. Published in the journal Science, it reveals that butterfly…


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Meet the 2025 La Kretz Center & Stunt Ranch Reserve Research Awardees

Congratulations to the 2025 awardees!


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La Kretz Center Director Brad Shaffer on NPR Discussing Wildfires impact Wildlife

Director of the La Kretz Center, Dr. Brad Shaffer, spoke on NPR’s “AirTalk with Larry Mantle” about wildfire’s impact on California ecosystems.


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The Ecology and Evolutionary Biology Dept. 2025 Seminar Series

Join us during the EEB Seminar Series to hear from La Kretz Postdoctoral Candidates Kaleigh Fisher, Timo Metz, and Ryan Buck! Each seminar is Co-hosted by the La Kretz Center…

Videos

Video: Expert insights on the causes, impacts and aftermath of the L.A. wildfires

UCLA Institute of the Environment and Sustainability and and UCLA’s Sustainable LA Grand Challenge recently hosted a virtual seminar addressing the historic wildfires that ravaged Los Angeles in January 2025.…

Travis Longcore for ABC7 News—Efforts to Save the Birds We are Losing

Bird populations across the United States are plummeting at an alarming rate, with three billion birds lost since 1970, according to UCLA Institute of the Environment and Sustainability professor Travis…

Publications

Rapid butterfly declines across the United States in the 21st century

C. B. Edwards, E. F. Zipkin, E. H. Henry, N. M. Haddad, M. L. Forister, K. J. Burls, S. P. Campbell, E. E. Crone, J. Diffendorfer, M. R. Douglas, R. G. Drum, C. E. Fallon, J. Glassberg, E. M. Grames, R. Hatfield, S. Hershcovich, S. Hoffman-Black, E. A. Larsen, W. Leuenberger, M. J. Linders, T. Longcore, D. A. Marschalek, J. Michielini, N. Neupane, L. Ries, A. M. Shapiro, A. B. Swengel, S. R. Swengel, D. J. Taron, B. Van Deynze, J. Wiedmann, W. E. Thogmartin, C. B. Schultz

Published Work | 2025 | Science

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