Johannes Foufopoulos is interested in the conservation biology of terrestrial vertebrates. Some of his group's projects include the impact of habitat fragmentation on small populations, and the effects of overgrazing on the services that natural ecosystems offer to human communities. Other research topics include the impacts of human activities such as habitat modification, climate change and introductions of exotic taxa on native wildlife. Prof. Foufopoulos has worked extensively in island conservation worldwide but especially in Mediterranean ecosystems. A second area of interest centers on the ecology and evolution of parasites and pathogens and the impact they have on their hosts. Specific research interests include the ecological and physiological factors underlying host-parasite interactions, the dynamics of infectious diseases in natural populations and the importance of disease for the conservation of endangered wildlife.