My research focuses on understanding patterns and processes that characterize marine ecosystems and, in particular, changes of, and threats to, marine biodiversity and food webs. Specifically, I study community and food-web dynamics linked with human activities (such as fisheries, climate change, eutrophication, and invasive species), and how these translate into changes in ecosystem structure and functioning of marine ecosystems, and services that humans obtain from the ocean. I develop and apply a variety of ecological analyses such as ecosystem modelling techniques and statistical tools, and I use historical data, fisheries statistics, experimental results and field data sets. During my research activities, I have been involved in numerous studies on the biodiversity and marine food webs of Mediterranean, European, African, South and Central America Seas through international and national initiatives. I am also very actively involved in the development of modelling techniques of dynamic marine food webs using free software approaches (EwE Consortium, GOM, FISH-MIP) and generating knowledge to provide advice for the management of marine resources.