sharashy, omar (2022) “Application of Shannon and Simpson Diversity Index to Study Plant biodiversity on Coastal Rocky Ridges Habitats with Reference to Census Data in the Ras El-Hekma and Omayed Area on the Western Coastal Region of Egypt”, Journal of Pure & Applied Sciences , 21(1), pp. 41–45. doi: 10.51984/jopas.v21i1.1578.