Faculty of Biology, University of Latvia
Hard copy: ISSN 1691–8088
On-line: ISSN 2255–9582
Environ Exp Biol (2020) 18: 193–205
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Environmental and

Environ Exp Biol (2020) 18: 193–205

Orginal Paper

Bioclimate and diversity of Tamaricaceae in Oranie, West Algeria

Mohammed Souddi1,2, Bahae-Ddine Ghezlaoui-Bendi-Djelloul1*
1 Laboratory of Ecology and Management of the Natural Ecosystems N° 13, Faculty of Nature and Life Sciences, and Earth and the Universe Sciences, University of Tlemcen, Algeria
2 Department of Nature and Life Sciences, Faculty of Sciences and Technology, University of Adrar, Algeria
* Corresponding author, E-mail: ghezlaouibahae@gmail.com


Vegetation is a good indicator of the status of ecosystems that adapt to environmental changes. In this study, the diversity, floristic composition of Tamaricaceae and distribution of plant species under climate change were determined in West Algeria. Four sites were selected for performing phytoecological surveys using the sigmatist method along a north-south ecological gradient. In total, 195 plant species belonging to 41 families were identified, dominated by Asteraceae (15.90%) and Poaceae (15.38%). Analysis of biological types showed dominance of therophytes (49.74%) in this flora, which indicates the presence of therophytization in this region. Analysis of chorological types identified the dominance of the Mediterranean element (46.67%). The disturbance index was relatively high (75.54%) reflecting significant importance of disturbance in the formation of the characteristic vegetation of the region. The study concluded that the flora of Tamaricaceae is under the threat of climate change and anthropogenic pressure. These results underline the need for strict policies to maintain and conserve the ecosystems that are vulnerable.

Key words: climate, diversity, Oranie, Tamaricaceae, west Algeria.

Environ Exp Biol (2020) 18: 193–205
 DOI: http://doi.org/10.22364/eeb.18.20

Prof. Gederts Ievinsh
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