My research interests and activities are reflected in the projects I have been running and in my publications. They are in the areas of macroevolution and ecology of habitat types of plants; phylogeny, systematics, and biogeography of pantropical flora; phylogeography, historical demography, and evolutionary ecology of plant populations. I am interested in the impact of geologic and climatic processes on evolution of plant species with wide climatic and geographic range, such as sea buchthorn (Hippophae rhamnoides), and in how the dominant environments of ancient epochs shaped composition of contemporary plant communities.