Zonation and establishment of vegetation in selected uninhabited Egyptian and Sudanese oases

Kehl, Harald

doi:10.1016/0341-8162(87)90021-x

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…The increase in human population of Egypt necessitates the expansion of the cultivated lands; therefore vast areas in these deserts were subjected to land reclamation, on both private and governmental schemes. The primitive vegetation of the uninhabited oases in Southern Egypt (Kehl, 1987) composed mainly of Dom palm (Hyphaene thebaica), several Acacia spp., Maerua, Capparis, Calotropis procera and Citrullus colocynthis.…”

Section: Introductionmentioning

confidence: 99%

Vegetation Dynamics and Species Diversity in a Saharan Oasis, Egypt

et al. 2018

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The present study provides an analysis of the floristic composition, habitat types, vegetation structure and species diversity, elucidating the role of the environmental factors that affect species distribution in Kharga Oasis, Western Desert, Egypt. The vegetation was sampled from 89 permanently visited stands in 12 sites situated along N - S line transect across the oasis, and extending for about 185 km to cover as much as possible the physiognomic variation in habitats. Four main habitats were recognized and forming concentric zones (from inside to outside): farmlands and date-palm orchards represent the inner zone, the waste-salinized lands (not saltmarshes) in the middle zone, and the surrounding (bounding) desert in the outer zone. A total of 122 species from 35 families and 102 genera represented the flora of the study area. Poaceae, Asteraceae and Fabaceae were the major families, which constituted 47% of the total flora. Classification using Bray-Curtis cluster analysis produced 4 vegetation groups (A - D); each can be linked to a certain habitat. The arrangement of habitat zones along the first DCA axis can be noticed: outer zone (bounding desert), middle zone (waste-salinized lands) and inner zone (arable lands). On the other hand, farmlands and date-palm orchard groups were separated from each other along the second DCA axis. The relationship between the vegetation and soil variables was studied using Canonical Correspondence Analysis (CCA); it was indicated the most important environmental gradients those control the vegetation composition and the distribution pattern of species in Kharga Oasis, which were mainly related to gradients in soil moisture content and fine fractions. The present situation of Kharga Oasis urges the conservation of some old historic wells and the naturally growing open dom-palm forests before vanishing due to high human activities in the area.

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Section: Introductionmentioning

confidence: 99%

Vegetation Dynamics and Species Diversity in a Saharan Oasis, Egypt

et al. 2018

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“…The plant diversity in the Western desert of Egypt has been investigated by numerous studies such as; Täckholm & Täckholm (1941); Täckholm and Drar (1950, 1954, 1969; Täckholm (1974), Boulos (1980Boulos ( , 1982a; Bornkamm (1986), Alaily et al (1987), Kehl (1987); Bornkamm andKehl (1989 &; Kehl and Bornkamm (1993); Boulos (1995Boulos ( , 1999Boulos ( , 2000Boulos ( , 2002Boulos ( , 2005Boulos ( & 2008; Boulos and Barakat (1998) and Azer (2013). Little information is known about the plant diversity in Abu Rawash area because of its unpredictable rain and the researchers reach the area after a prolonged drought and see old remnants of the vegetation.…”

Section: Introductionmentioning

confidence: 99%

Study on the Plant Diversity in Abu Rawash Area, Giza, Egypt

Azer

2017

Egyptian Journal of Agricultural Sciences

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The aim of the current research was to study plant diversity among seven represented habitats namely; field crops, orchards, irrigation canals, Mansuria Canal, deserts, drain station and water bodies in Abu Rawash area, Giza, Egypt. A total of 107 species belonging to 92 genera and 33 families were recorded and identified with regional flora and available checklists. The common families were Poaceae (22%) followed by Compositae (12%) Brassicaceae (7%). Three species were recorded from each of Cyperaceae, Malvaceae and Zygophyllaceae, and two species from each of Amaranthaceae, Apiaceae, Apocynaceae, Plantaginaceae and Salicaceae. In addition, 16 families were monotypic. The annual species represented 53%, perennial herbs were 35% and each of shrubs and trees were 5%; while biennials species were 2%. The chorological ratios showed that the cosmopolitan taxa had the highest contribution (23%), followed by pantropicals (16%) and palaeotropicals (13%). The cluster analysis divided the studied habitats into four groups. Group one included field crops and irrigation canals habitats. The second group contained orchards and Mansuria Canal habitats. The third group included drain station and deserts habitats; while the forth group contained water bodies' habitat. On the whole, orchards and Mansuria Canal habitats showed the highest similarity value (0.543). On the other hand, there was no similarity between species of water bodies' habitat and species of the other habitats except with Mansuria Canal (0.017).

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Paleohydrology and paleoenvironments at Bir Sahara: Pleistocene lithostratigraphy and sedimentology in the southern Egyptian Sahara

Hill

Schild

2017

Journal of African Earth Sciences

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Zonation and establishment of vegetation in selected uninhabited Egyptian and Sudanese oases

Cited by 5 publications

References 4 publications

Vegetation Dynamics and Species Diversity in a Saharan Oasis, Egypt

Vegetation Dynamics and Species Diversity in a Saharan Oasis, Egypt

Study on the Plant Diversity in Abu Rawash Area, Giza, Egypt

Paleohydrology and paleoenvironments at Bir Sahara: Pleistocene lithostratigraphy and sedimentology in the southern Egyptian Sahara

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