Tar spot on the native grass Andropogon virginicus leaf caused by Phyllachora graminis (left). Leaf spot on the native Tripsacum dactyloides caused by Fusarium spp. (center). Sorghum halepense (right) is a major invasive species in the southeast US. It has been a highly successful invader despite being infected by numerous pathogen species, including fungi in the genera Cercospora and Helminthosporium that produce leaf spot diseases.

Courses Taught
Bio 54
Ecology and Population Biology
Principles governing the ecology and evolution of populations, communities and ecosystems, including speciation, population genetics, population regulation and community and ecosystem structure and dynamics.
Ecol 199
Current Issues in Ecology
A project-based class required of first year students in the Curriculum in Ecology.  The class plans and completes a project on an environmental issue of current importance.  As well as broadening their knowledge of ecology, a chief goal is to learn how to address interdisciplinary environmental problems as an integrated team. 
Biol 490
Disease Ecology & Population Biology
This class will cover topics such as mathematical theory on host-pathogen interactions; empirical studies of human, wildlife, insect, and plant host populations; emerging infectious diseases; effects on host behavior; host-parasite coevolution; multi-host and multi-pathogen systems; and anthropogenic effects. The structure of the class will consist of about 1/3 lectures, as well as 2/3 of a mix of discussion of primary literature articles; discussions with guest researchers; student presentations; and exercises with computer simulation models. Students will also be encouraged to attend occasional seminars outside of class delivered by the guest researchers.