Brad Shaffer

H. Bradley Shaffer

Director, UCLA La Kretz Center for California Conservation Science

Distinguished Professor, Department of Ecology and Evolutionary Biology; Institute of the Environment and Sustainability

Personal Website

Education

1982 – PhD – University of Chicago – Evolutionary Biology
1976 – BS – University of California, Berkeley – Zoology

Research Interests

Brad is a Distinguished Professor in the Institute of the Environment and Sustainability and the Department of Ecology and Evolutionary Biology at UCLA, where he has been on the faculty since 2011. Before that, he was briefly on the faculty at UC Irvine (1985-87) followed by over two decades as a faculty member in the Department of Evolution and Ecology at UC Davis (1987-2011). 

The Shaffer lab is a group of conservation biologists applying evolutionary and ecological theory to the solution of real-world problems at the interface of basic and applied science. Research in the lab tends to focus on amphibians and reptiles, and a fondness for these animals—combined with a fundamental respect for natural history and field biology—are among the strongest themes unifying the group. Shaffer and his lab members have worked for decades on the federally and state listed California tiger salamander, Ambystoma californiense, including genomic analyses of a unique case of hybridization between introduced and native tiger salamanders that has as much to say about mechanisms of speciation as it does conservation biology. They are also one of the primary labs in the world using genomic techniques to better understand the evolutionary history and conservation status of the world’s turtles and tortoises. These animals are among the most endangered on earth, and the lab works with both government and non-governmental organizations to identify at-risk species and prevent further extinctions of wild populations.  

Building strong collaborative research networks with local, state, and federal resource agencies is a key component of work in the lab. The California Conservation Genomics Project (CCGP) is a massive, multi-species effort to add genetic health assessments to California’s conservation mission, while the Atlas of Turtle Genomes for Conservation (ATGC) is an equally ambitious effort to use the power of genomics to determine where poached turtles should be re-released while simultaneously identifying hotspots of poaching for law enforcement. Brad is the Founding Director of the UCLA/La Kretz Center for California Conservation Science, the Director of the UCLA Stunt Ranch Reserve, and the faculty liaison to the cross-campus UC Nature system.

Projects

2025 Public Lecture announcement w/ speaker Ben Novak.

Biotechnology for Conservation Success

In 2025, the UCLA La Kretz Center for California Conservation Science hosted its 14th Annual Public Lecture, marking fourteen years of connecting the public with the scientific research that shapes…

The Endangered Species Act at 50

The Endangered Species Act at 50

At the 13th annual Public Lecture hosted by the La Kretz Center, Drs. Cat Darst, Scott Morrison, and Brad Shaffer marked the 50th anniversary of the 1973 Endangered Species Act…

ucla la kretz 2021 annual lecture

UCLA La Kretz 2021 Annual Lecture

This event celebrates ten years of conservation research, featuring 3 minute lightning talks by each of our 13 past, current, and future La Kretz postdoctoral fellows. The presentations are followed…

western pond turtle at-risk species assessment

Western Pond Turtle at-risk species assessment

The western pond turtle is California’s only native freshwater turtle. The turtle’s numbers have been declining due to urbanization, limited water availability, and competition or predation from invasive species —…

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Recent Publications

Phylogenetic uncertainty and taxonomic re-revisions: an example from the Australian short-necked turtles (Testudines: Chelidae)

P.Q. Spinks, A. Georges and H. B. Shaffer

Copeia 103:536-540, 2015.

Published Work, Permalink

Turtles and tortoises of the world during the rise and global spread of humanity: first checklist and review of extinct Pleistocene and Holocene chelonians. In: Rhodin, A.G.J., Pritchard, P.C.H., van Dijk, P.P., Sau- mure, R.A., Buhlmann, K.A., Iverson, J.B., and Mittermeier, R.A. (Eds.). Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/SSC Tortoise and Freshwater Turtle Specialist Group

Turtle Extinctions Working Group [Rhodin, A.G.J., Thomson, S., Georgalis, G., Karl, H.-V., Danilov, I.G., Takahashi, A., De La Fuente, M.S., Bourque, J.R., Delfino M., Bour, R., Iverson, J.B, Shaffer, H. B., and Van Dijk, P.P.].

Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/SSC Tortoise and Freshwater Turtle Specialist Group. Chelonian Research Monographs 5(8):000e.1–66, 2015.

Published Work, Permalink

Comment on Spracklandus Hoser, 2009 (Reptilia, Serpentes, ELAPIDAE): request for confirmation of the availability of the generic name and for the nomenclatural validation of the journal in which it was published

Rhodin, A. G. J. (and 69 coauthors)

Bulletin of Zoological Nomenclature 72:65-78, 2015.

Published Work, Permalink

Desert Tortoises in the Genomic Age: Population Genetics and the Landscape

H. B. Shaffer, E. McCartney-Melstad, P. Ralph, G. Bradburd, E. Lundgren, J. Vu, B. Hagerty, F. Sandmeier, C. Weitzman, R. Tracy

2015.

Progress Report, Permalink

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Conservation genetics and genomics of amphibians and reptiles

H. B. Shaffer, M, Gidiş E. McCartney-Melstad, K. M. Neal, H. M. Oyamaguchi, M. Tellez, and E. M. Toffelmier

Annual Reviews of Animal Biosciences 3:113-138, 2015.

Published Work, Permalink

Determinants of size at metamorphosis in an endangered amphibian and their projected effects on population stability

C.A. Searcy, H. Snass, and H. B. Shaffer

Oikos 124:724-731., 2015.

Published Work, Permalink

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Multiple sources of uncertainty affect metrics for ranking conservation risk under climate change

A. N. Wright, R. J. Hijmans, M. W. Schwartz, and H. B. Shaffer

Diversity and Distributions 21:111-122, 2015.

Published Work, Permalink

Cryptic diversity in metropolis: Confirmation of a new leopard frog species (Anura: Ranidae) from New York City and surrounding Atlantic Coast regions

J. A. Feinberg, C. E. Newman, G. J. Watkins-Colwell, M. D. Schlesinger, B. Zarate, B. R. Curry, H. B. Shaffer, and J. Burger.

PLoS ONE 9(10): e108213., 2014.

Published Work, Permalink

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Field of genes

H. B. Shaffer

BOOM: The journal of California 4:133-138, 2014.

Published Work, Permalink

Turtles of the world, 7th edition: annotated checklist of taxonomy, synonymy, distribution with maps, and conservation status

Turtle Taxonomy Working Group [P. P. van Dijk, J. B. Iverson, A. G. J. Rhodin, H. B. Shaffer, and R. Bour]

Chelonian Research Monographs 5(7):000.329–479, 2014.

Published Work, Permalink

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