"function of species, communities and ecosystems" (Kathryn Papp):
Actually, I think this is an essential point in bringing biodiversity issues into the people's mind!
If we can find a way to make people (anyboy, including stakeholders, land-owners, policy-makers, ...) aware of the functions of species and their interactions within communities, along with ecosystem heterogeneity, in shaping ecosystem services, we will be close to having found the solution to biodiversity conservation!