Floristic Diversity Patterns in the Beni-Haoua Forest (Chlef, Algeria)

Abstract

The purpose of this study was to provide an inventory and an analysis of plant species occupying Beni-Haoua, a mountainous coastal ecosystem, with a rarely studied well-developed forest. As a result, 87 species were recorded in 7 sites, the Jaccard classification resulted in 4 groups of sites with significantly different diversities. According to the ϕ-coefficient of association, which can be used as a measure of fidelity, among the 87 species, 34 diagnostic species were distributed over four plant communities, with a fidelity value ranging from 55 to 100%, 28 differential species, among which 16 species were common to 2 plant communities and 12 common to 3 plant communities. The redundancy analysis (RDA) showed that among the studied environmental variables, altitude and pH were the most important ones. Indeed, according to the detrended correspondence analysis (DCA), plant species occurrence and distribution in the study area were affected by a strong altitudinal gradient.

Ethnobotanical Survey of the Medicinal Plants used in the Southern Mediterranean. Case Study: The Region of Bissa (Northeastern Dahra Mountains, Algeria)

“…It is a typical Mediterranean area in terms of landscape structure, composition and climate, distinguished by hot, dry summers and relatively rainy winters, with an annual dry period of 5 months and 74% of the annual precipitations are recorded during winter and autumn. 32,33 It is a mountainous with elevations ranging from 400 to 1146 meters and woody area dominated by species such as Pinus halepensis L., Quercus suber L., Quercus ilex L., Arbutus unedo L., Erica arborea L. and Cistus monspeliensis L.…”