Journal
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
Volume 21, Issue 6, Pages 554-565Publisher
ELSEVIER
DOI: 10.1016/j.sjbs.2014.02.001
Keywords
Kingdom of Saudi Arabia; Northern border region; Floristic survey; Flora; Wadi Arar; Floristic diversity
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Funding
- Deanship of Scientific Research, Northern Border University
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Wadi Arar in the Northern border region of Saudi Arabia is one of the most important Wadis of the Kingdom. The present study provides an analysis of vegetation types, life forms, as well as floristic categories and species distribution. A total of 196 species representing 31 families of vascular plants were recorded. Compositae, Gramineae and Leguminosae were the most common families. Therophytes and chamaephytes are the most frequent life forms, indicating typical desert spectrum vegetation. The distribution of these species in the different sectors of the Wadi as well as the phytochoria for the recorded species is provided. Ninety-one species (46.5%) are typical bi-regional. Furthermore, about 105 species (53.5%) are mono- or pluriregional taxa. The highest number of species (136 or 69.5%) was recorded for annual plants, while the lowest number of species (60% or 30.5%) was recorded for perennial, short perennial or annual to biennial species. (C) 2014 Production and hosting by Elsevier B.V. on behalf of King Saud University.
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