Abstract
Rosa arabica is a threatened species of the family Rosaceae, endemic to Mount Catherine region in the South Sinai, Egypt. The aim of this study was to evaluate the status of the R. arabica populations after a conservation program that has been started eighteen years ago. Fencing of the target species was applied in three main locations in Saint Katherine protectorate; Kahf El-Ghola, Wadi El-Arbaen and Shaq Mussa. Soil analysis and seed bank content were assessed for the three localities. Evaluation of the obtained results showed that R. arabica has negatively reacted to the fencing in enclosures of Kahf El-Ghola and Shaq Mussa, while the enclosure in Wadi El-Arbaen showed a significant increase in plant growth and cover. The soil seed bank of Rosa arabica reflected a reluctant of seed germination and no emergence of Rosa seedlings were observed, however, other important species (including endemic sp.) which was not in the standing vegetation were recorded. Thymus decussatus, Capparis sinaica, Mentha longifolia, Peganum harmala, Pulicaria crispa, Teucrium polium, and Verbascum sinaiticum, are examples of the emerged species out of the soil seed bank.
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