- Research Associate – The Field Museum, Chicago, 2011 - present
- Adjunct Faculty – Lake Forest College, Fall 2013 and 2014
- Phyloecology in a restoration context (with Dan Larkin)
- Artocarpus (breadfruit and jackfruit) genetics (with Nyree Zerega)
- Lepidospartum burgessii (broomsage, scalebroom) population genetics and conservation (with Jeremie Fant)
- Botrychium s.s. (moonwort) fern systematics and population genetics
- Rare plant ecology, conservation, and restoration
My research interests encompass a range of subjects including restoration ecology and genetics, population structure, rare plant conservation, and species concepts, with natural history a constant interest and hobby.
Williams, E.W. and D. M. Waller. 2012. Phylogenetic placement of species within the genus Botrychium s.s. (Ophioglossaceae) based on plastid sequences, AFLPs, and flow cytometry. International Journal of Plant Sciences 173:5 516-531.
Camill, P., A. Barry, E. Williams, et al. 2009. Climate-vegetation-fire interactions and their impact on long-term carbon dynamics in a boreal peatland landscape in northern Manitoba, Canada. Journal of Geophysical Research-Biogeosciences, 114: Art. No. G04017.
Waller, D., S. Johnson, R. Collins, E. Williams. 2009. Threats posed by ungulate herbivory to forest structure and plant diversity in the Upper Great Lakes Region and a review of methods to assess those threats. Prepared for the Upper Great Lakes NPS 'Vital Signs' program.