A phytogeographical analysis of the floristic elements in Saudi Arabia
1999
Alfarhan, A.H. (King Saud Univ., Riyadh (Saudi Arabia). Coll. of Science)
An analysis has been carried out on the chorological units of Saudi Arabia. Three chorological units have been identified within the country, based on the richness of endemism. They are: Saharo-Sindian regional zone, Somalia-Masai regional centre of endemism and the Afro-montane archipelago-like regional centre of endemism. The Saharo-Sindian regional zone is divided into three subzones; of which, Nubo-Sindian local centre of endemism and the Arabian regional subzone are present in the Kingdom. The boundary line of the Nubo-Sindian local centre of endemism within Saudi Arabia has been extended towards the eastern region to cover most of the regions in the western Najd. The Somalia-Masai region contains the highest percentage (25.66%) of species. The highest number of uni-regional endemic per unit area is found in the Afromontane archipelago-like regional centre of endemism while the lowest of that is in the Arabian regional subzone.
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