Aquatic plant distribution is driven by physical and chemical variables and hydroperiod in a mediterranean temporary pond network

摘要: The aim of this study was to assess aquatic plant distribution patterns in a Mediterranean temporary pond network (Donana National Park, SW Spain). We analyzed differences species composition employing multivariate ordination techniques; we specifically examined the importance hydroperiod and physical chemical variables five geomorphological areas across which is spread. ponds significantly segregated along north–south gradient, matching segregation pattern assemblages. Ponds three northernmost showed higher levels richness than two southernmost areas. In north, were present at densities, spanned broader range, had lower conductivity levels; these features associated with presence wet-meadow larger numbers submerged emergent species. south, alkaline waters mainly different charophyte species, predominance long-hydroperiod helped increasing number floating Managed ponds, been artificially deepened, contributed increase heterogeneity breadth entire network. At present, such are key preservation Donana’s rich unique community.