Datum semináře: 

Understanding and measuring how the distribution of biodiversity shifts in space and over time in response to environmental changes are central issues in conservation biology. These research questions are of immediate concern in regions where land-cover and climatic changes impact hotspots of biodiversity, such as Mediterranean ecosystems. Here I will present some case studies based on two biological groups, orchids and fungi, investigating whether and how the structure, composition and dynamics of communities are affected by habitat changes and drought in the Mediterranean region. Based on multiple spatial and temporal scales, our results revealed contrasted responses of species to these environmental changes depending on their ecological traits, and leading to changes in community composition. These studies allowed a better understanding of the mechanisms underlying orchids and fungal assemblies, and provide practical guidelines for the conservation of these organisms in the Mediterranean region.