My research focuses on the understanding of plant community diversity, structure and dynamics and how these affect ecosystem functioning. I am particularly interested in mechanisms that may explain persistent changes in plant communities and shifts in ecosystem states. I am currently working on the effects of climate variability on ecological transitions in different types of terrestrial ecosystems. I am also interested in how ecological and social dynamics interact and how ecological scientific work can be disseminated through and used by decision-makers for ecological restoration purposes. My work is profoundly cooperative and combines conceptual models, experiments, remote sensing and field studies. My empirical work has covered a wide range of ecosystems including arid, semiarid, temperate and wet tropical ecosystems from North and South America, West and South Africa and North and Mediterranean Europe.