Abdelkader Nouar

• Biodiversity Journal, 12 (3): 0729-0732

  Belgacem Nouar, Benchohra Maamar, Hicham Berrabah, Mohammed Souddi, Okkacha Hasnaoui & Abdelkader Nouar
  Diversity and floristic composition of Djebel Nessara region (Tiaret -Algeria)
  https://doi.org/10.31396/Biodiv.Jour.2021.12.3.729.732

  ABSTRACT
  This work undertaken represents an phytoecological approach of Djebel Nessara vegetation (Tiaret Mountains). The floristic analysis allowed us to release a list of 119 taxa distributed in 96 genera and 35 families. Angiosperms constitute 97.47% (Monocotyledonous 21% and Dicotyledonous 76.47%) while gymnosperms represent only 2.52%. The most represented families are Asteraceae, Fabaceae and Poaceae with percentages of 19.3%, 10.9% and 9.2%, respectively. The comparison of the different biological spectra shows the importance of the therophytes to the number of 57 species with 47.9%. On the biogeographical level, we notice the predominance of Mediterranean biogeographical species with 47.1%. Shannon's biodiversity index (H) is 4.28, while Piélou's Equitability (J) is 0.89 and the Simpson's index (1-D) is 0.98. However, the Perturbation index (PI) is in the order of 61.34%.

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