Alien Plant Invasions of the Natural Habitat in the Western Region of Saudi Arabia: Floristic Diversity and Vegetation Structure

The western region of Saudi Arabia is a major vegetation diversity hotspot with wide range habitats and variant climatic topographical characteristics. in this has not been fully studied to monitor the changes that happen over time these habitats. This study aims identify floristic structure plant species invaded Arabia. A total 58 stands different (i.e., mountains, protected areas “ridge mountain habitat”, wadis, farmlands, ruderal areas, coastal areas) were examined. 146 (94 native 52 alien species) distributed among 132 genera 49 families recorded. Asteraceae, Poaceae, Fabaceae most represented accounted for approximately 35% identified species. Multivariate analysis clustered them into four main groups: VG I dominated by Opuntia ficus-indica-Juniperus phoenicea, II Reichardia tingitana-Heliotropium aegyptiacum, III Prosopis juliflora-Acacia seyal-Abutilon pannosum, IV Suaeda monoica. ecological information may help monitoring across designing required conservation plans.