Assessment of Sidi Abed mountain flora richness through endemic, rare and threatened species in Tiaret, Algeria

Abstract

To present day, no study has been carried out on the local flora of the Sidi Abed Mountain. Situated southern the city of Tiaret considered as natural barrier before steppe area. Phyto-ecological surveys with 100 m2 Braun-Blanquet minimum area were conducted 75 species, belonging to 29 families and 66 genera has been established. Asteraceae (20%), Fabaceae (10.7), Poaceae (10.7), Lamiaceae (6.7%), Apiaceae (5.3%) and Asparagaceae (5.3) were the most representative families covering more than 50% of the inventoried families. Moreover, Therophytes (48%) are majorly dominant with a notable decrease of the phanerophytes (5,3%) and increase of Hemicryptophytes (22.7%). Predominance of the Mediterranean biogeographic type species with a percentage of (41.3%) followed by the Euro-Mediterranean (10.7%) and West-Mediterranean (10.7%) typical for Mediterranean semi-arid climate. 2 endemic species were present and rarity reached 9% combined of rare (4%) and quite rare (5%). Among the taxa analyzed, 8 are included in the International Union for Conservation of Nature red list with different status and 2 are on the Algerian list of protected non-cultivated species.