research

We use a combination of field, laboratory, and bioinformatic methods to better understand ecology and evolution. Most of our research is focused on Appalachian amphibians, especially the lungless salamanders of the family Plethodontidae.

Reproductive morphology

variation in reproductive behavior & morphology

Plethodontid salamanders engage in fascinating, ritualized courtship and have suites of morphological traits used in these behaviors. Males of some species of "brook salamanders" (Eurycea) exhibit two discrete strategies found within a single population—a phenomenon known as alternative reproductive tactics. We study the origin, maintenance, and consequences of this variation using local fieldwork, laboratory experiments, museum specimens, and genomic data.

Hybrid salamanders

hybridization, phylogeography, & species delimitation

Evolution is complicated. Sometimes speciation happens with continuous gene flow; other times, species that diverged in allopatry hybridize in regions of secondary contact. Appalachian salamanders provide especially compelling models for studying reticulate evolution, and we use genomic data to understand how changing landscapes shape genetic diversity.

Conservation research

conservation of rare and imperiled species

Effective conservation depends on good science. We work with conservation biologists at government agencies and NGOs to provide data on the distribution and status of imperiled Appalachian organisms. This includes field surveys, environmental DNA, and population genomic approaches to estimate gene flow.