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Andrew J. Crawford's homepage

Assistant Professor: Universidad de los Andes 2009-

STRI Research Associate 2009-

STRI postdoctoral researcher 2007-2009

Fulbright Scholar: Visiting professor Universidad de los Andes 2006

Smithsonian Molecular Evolution postdoctoral fellow 2003-2005

NSF International Programs postdoctoral fellow 2001-2003



Welcome to my homepage, version 2.0. Please check back now and then for updated content and new photos. Feedback is always appreciated. You may email me at andrew-∀-dna.ac (replace "-∀-" with "@", obviously).

Last photo update: Photos from my 2007 trip to Cana station, Darien National Park.


I just moved to Bogotá, Colombia, got married and joined the Universidad de los Andes' Department of Biological Sciences and Instituto de Genética de Poblaciones y Filogeografía. I am also a Research Associate (pending) at the Smithsonian Tropical Research Institute. I specialize in the use of DNA sequence data to understand the evolution of biodiversity at a variety of spatial and temporal scales. I use evolutionary genetics to explore the origins of frog communities throughout the Neotropics, with particular attention to the fauna of Panama. My current work is focused on phylogeography, which provides a link between population genetics and broad-scale biogeography. My publications in population genetics, phylogenetics, phylogeography, molecular evolution and herpetology are available on my PDFs page.

While biodiversity exists at many levels, from genes to biomes, when people talk about biodiversity, they are usually referring to the number of species. Species are both units of conservation and subjects of perennial interest in evolutionary biology. Therefore, I am also involved in the theoretical and practical aspects of how species are discovered, defined, delimited, described, and differentiated. I study amphibian diversity and taxonomy, specializing in direct developing frogs of Isthmian Central America (the genera Craugastor, Pristimantis, Strabomantis, and Eleutherodactylus).

During my years in Panama, I've personally witnessed the decline of frog populations in the mountains of Central Panama, a recent symptom of a global problem. Noticable environmental changes used to take generations (Why, in my day, Sonny...). Nowadays, you can see the declines from one year to the next. (And we have no idea yet how to stop them.) In 2007, two friends (Drs. Karen R. Lips and Roberto Ibáñez) and I conducted a series of field surveys in eastern Panama to characterize the amphibian fauna before it, too, declines. Our work was financed by the Committee for Research and Exploration of the National Geographic Society. Stay tuned for updates.

And help Save the Frogs!

For more information, follow the links on the left.

Something on these pages was last modified by me on: 11 January 2010

Locations of visitors to this page Geographic locations of visitors to this site so far this year (2010).
Mini-map of last year's visitors (2009) can be seen here.


I write these pages with TextWrangler in raw XHTML with CSS which I learned from this book. I am so 1997!