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Accueil du site → Doctorat → Egypte → Flora of Wadi Gebal, Saint Katherine Protectorate, South Sinai

Damietta University (2020)

Flora of Wadi Gebal, Saint Katherine Protectorate, South Sinai

El Gamal, Ibrahim Abd El Rafee Ibrahim.

Titre : Flora of Wadi Gebal, Saint Katherine Protectorate, South Sinai

Auteur : El Gamal, Ibrahim Abd El Rafee Ibrahim.

Etablissement de soutenance : Damietta University

Grade : Doctor of Philosophy (PhD) 2020

Résumé partiel
This study titled with Flora of Wadi Gebal, Saint Katherine Protectorate, South Sinai : Some additions and Taxonomic revision aimed to detection of flora current status within the study area in addition to taxonomic revision of genus Datura. This study was categorized into three main section each of which has it is particular issue. Part I : wild flora and addition to flora of Egypt. Represented by flora of wadi Gebal region and the other sites that survived during exotic species study (section 2) and revealed that A total of 235 wild taxa were recorded representing 50% of known wild flora of Saint Katherine protectorate, belonging to 175 genera and 53 families including 1- Three taxa as new records to flora of Egypt those Clinopodium serpyllifolium (M. Bieb.) Kuntze subsp. barbatum (P.H.Davis) Bräuchler, Datura ferox L. and Papaver somniferum L. the last one escaped from cultivation. 2-Nine taxa as new record to Sinai. 3- Twenty five new records to Saint Katherine protectorate. 4- Fourteen endemic and steno-endemic taxa that represented 82% of Saint Katherine protectorate endemic taxa and 23% of Egyptian endemic taxa. The surveyed flora represented by Angiospermae (Dicotyledoneae 199 taxa, and Monocotyledoneae 31spp.) while Gymnospermae and Pteridophyta represented by three and two species respectively. The largest families were Asteraceae, Poaceae, Lamiaceae and Caryophyllaceae rather than eleven families were represented by two species, and twenty one families represented by one species only. The study of surveyed flora Chorology revealed that 132 taxa were mono-regional including one taxa related to sub-tropical, 64 taxa were bi-regional, 24 taxa Poly-regional and 14 taxa were endemic and steno-endemic. Investigated taxa are distributed in four microhabitats viz. wadi, terraces, gorges and slopes. Distribution of plant species was higher in gorges ; wadi bed ; Shannon index, richness, frequency and density were significantly higher in gorges and wadi bed compared to the other microhabitats. Climatic changes especially drought, over collection, overgrazing and invasive species considered as main threats to nature flora within the study area. The study of exotic species documented that- Twenty four plant species used as traditional crops ; those investigated species were established in Bedouin orchids without notable environmental problems.

Présentation étendue (EULC)

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