Global environmental change will cause significant changes in ecosystems and the services they provide. I'm interested in these potential impacts, and the consequences of the impacts for society. "The most likely future isn't" (Herman Kahn,1967). I'm therefore keen to develop scenario planning tools to prepare for an uncertain future with global environmental changes. Biodiversity is declining rapidly, yet we still don't know the extent or trends of change for many species, habitats and ecosystems. I try to contribute to the development of robust analytical methods to quantify stock and change in these important resources.