Format: ORAL

Rut Snchez de Dios1, Pablo Castro Snchez-Bermejo2,3, Iñaki Mola4, Felipe Domnguez-Lozano1

1-Deprtment of Biodiversity, Ecology and Evolution. Faculty of Biological Sciences. Complutense University of Madrid 2-Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany 3-German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstraße 4, Leipzig, Germany 4-Independent consultant

Urban biodiversity is originated by the curse of urban history, biogeographical context, and disturbance regime. Therefore, several species groups and functionalities conform present urban biotas, conforming a mixture of novel ecosystems and remnants of natural habitats. Recently, urban settings have been considered perfect scenarios to develop nature conservation and restoration actions. However, because of this mixed origin and rapid changes, the frontier between nature and cultural conservation may be fuzzy and true conservation measures could be mistaken for traditional horticultural practices. The study of the evolution of remnant natural habitats immersed in the urban matrix can contribute to clarify future trends of urban biodiversity conservation. We hypothesized that urban remnants evolve differently than the rest of urban green habitats by maintaining, not also more species diversity, but also better functionality. Further, they may respond in different ways to urban perturbations. Our main objectives are: To record gain and losses for native and non-native plants for a 200-year period in a remnant habitat, Casa de Campo (Madrid), and to compare it with the rest of urban green habitats. To study rare- common species conformation during this period. To study functional diversity and functional spectrum By compiling plant records from different inventories performed in Casa de Campo and Madrid during the last 200 years, we recorded losses and gains of species (discovery and extinction rates) in both Casa de Campo and the rest of the city and simulated how different scenarios of plant species change may affect functional diversity in the remnant habitat and its surroundings.