“…The comprehension of biodiversity at multiple spatial scales is, therefore, a crucial challenge for the research on plant ecology and the evolution of Mediterranean plants in future decades. The same is true regarding both ecological [8] and genetic diversity among populations of the same species [12]. In an ecologically and geographically fragmented system, such as the Mediterranean basin, this will be increasingly jeopardized by global climatic change; the role of single populations as particular objects of plant adaptation and evolution will be crucial, not only for their conservation [14], but also for the ecosystem services they provide to humanity.…”