DALIA: a relational DAtabase of tree, shrub and LIAna taxa recorded in the Functional Urban Area of Campobasso (Italy)

We developed the DALIA relational database (DAtabase of tree, shrub and LIAna taxa), which contains records of tree, shrub, andliana taxa recorded in the Functional Urban Area of Campobasso, a small city located in the inner-Mediterranean Region of SouthernItaly. The DALIA database, developed through the PostgreSQL data management system, includes 170 species and subspecies (126 na-tive and 44 alien) belonging to 46 taxonomic families (35 native species and 23 alien species). Each taxon, whether native or alien, wasclassified according to multiple ecological, functional, and biogeographic groups. Moreover, the diagnostic value for Habitats Directive92/43/EEC, the IUCN red list conservation category, and, specifically for alien taxa, residence time and invasion status are reported.We described the dataset by bar and donut charts, density plots, and box plots. Results highlighted that native taxa are mainly Eurasiandeciduous and Mediterranean evergreen with a prevalent zoochorous dispersal. By contrast, alien taxa are from Temperate Asia, NorthAmerica, and Tropical Asia and count many anemochorous species with winged diaspores. Alien plant taxa show different characteris-tics in terms of ecological and disturbance indicator values, indicating a potential greater competitiveness in highly disturbed environ-ments than native ones. The DALIA checklist of native and alien plant taxa collects important ecological information that is useful formonitoring plant diversity, implementing ecological restoration actions, and supporting sustainable urban greenery plans and actions.