Dan is interested in a range of topics in population biology and community ecology, including both basic issues and those related to conservation biology. At the moment, his field work is focused on plant population ecology, especially the demography of arctic and alpine plants and how they respond to climate change, and on the ways that termites influence an East African savanna system, in particular their effects on acacias and the communities they support. He is also working collaboratively on modeling projects on a variety of topics and species.