Regional phytogeographic analysis of the flora of the Mounts of Saida (western Algeria): evaluation-restoration report

摘要

A regional floristic and phytogeographic study was conducted in the Mounts of Saida, a subsectorof the Tell Atlas (Oran) (O3), in the western Algeria. On an area of 56.31 Km2 surveyedregularly over time during the springs and autumns from 2017 to 2019. A total of 344 taxadivided into 77 families and 223 genera, including 18 new (exogenous) for Tell Atlas (Oran)sub-sector (O3), have been inventoried. Of these 18 species, 8 belong to the phytogeographicareas of the arid (H) and hyperarid (AS) regions and 2 invasive species that reinforce andconfirm theories of plant dispersal to the north and to high altitudes for adapting to climatechange. The Factor Analysis of Correspondences (F.A.C) shows that species distribution isthe result of local microclimates associated with the elevation; particularly, the mountainsfacing north receive a significant amount of humidity from the Mediterranean Sea.