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- W2187911894 abstract "3 Abstract: Mahazat Al-Sayd protected area in Saudi Arabia is of about 220,000 ha and is a gently undulating plain 180 km northeast of Taif on the Riyadh-Makkah road. It is a large protected area in central Saudi Arabia and the second largest fenced Nature Reserve in the world. The present study aims at determining the floristic composition and analyzing the vegetation of Mahazat Al-Sayd; provides a floristic list of the vascular plants, their uses, global and local phytogeographical distribution; identifies the plant communities and assesses the environmental factors that affect their distribution. This is very useful for planning with refer to protection, reclamation and management of valuable species. Ninety two species were recorded along the different sites of the protected area belong to 21 families and 70 genera. Poaceae has the highest contribution to the total flora, followed by Asteraceae, Fabaceae, Zygophyllaceae, Brassicaceae and Caryophyllaceae. Ninety four percent of the total recorded species by the present study have at least one aspect of the potential or actual economic uses: 80.4% of total recorded species are grazing, 42.4% are medicinal, 15.2% are edible by man, 21.7% used as fuel. The present study indicated that the grasses which are widespread and eaten by gazelle include Ochtochloa compressa, Panicum turgidum and Stipagrosta plumosa with Acacia tortilis trees dominating throughout, but some of plant species such as Lasiurus scindicus disappeared due to grazing. The Saharo- Arabian elements are the most represented chorotype, followed by the Sudanian, Mediterranean and Irano- Turanean elements. The life form spectrum indicated that therophytes were the most represented followed by chamaephytes. The application of TWINSPAN and DECORANA techniques led to the recognition of 4 vegetation groups (communities): I: Calligonum comosum community which comprises the two small mountains: Sha'af al-Shamali or White mountain and Sha'af al-Janubi or Black mountain, II: Acacia tortilis community which dominates the gravel habitat, III: Zygophyllum simplex community dominates the sandy flats habitat and IV: Pulicaria incisa community dominates the alluvial clays habitat. These results were discussed and compared with the other related studies." @default.
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- W2187911894 date "2011-01-01" @default.
- W2187911894 modified "2023-09-27" @default.
- W2187911894 title "Vegetation analysis of Mahazat Al-Sayd Protected Area: The second Largest Fenced Nature Reserve in the World" @default.
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