Floristic Diversity of Tabuk Province , North Saudi Arabia (original) (raw)
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Floristic Composition, Life Form and Chorology of Plant Life at Khulais Region, Western Saudi Arabia
2013
Floristic composition of Khulais region, West Saudi Arabia, is lacking. Therefore, the present study has been undertaken to assess its Floristic composition, Life form and chorology. Results revealed that the region consider a hot-spot in the Kingdom in term of plant diversity and more diverse compared with other well studied regions in Saudi Arabia and neighboring countries. A total of 251 plant species belonging to 160 genera and 50 families were identified. The major plant families that contributed in the formation of vegetation of the area in question were Poaceae (42 species) followed by papilonaceae (20 species), Euphorbiacea and Asteraceae (18 and 15 species, respectively), while eighteen families each was represented by only one species. Therophytes exhibited the maximum number of species (41.2%), followed by Chaemophytes (31.4%), Hemicryptophytes (13.7%) and Phanerophytes (10%), while the least frequent life form class was Geophytes. Chorological characteristic of the recor...
Floristic Diversity of Jabal Al-Ward, Southwest Tabuk Region, Kingdom of Saudi Arabia
Agronomy
Jabal Al-Ward is one of the Hijazi mountains situated between Al-Ulā and Al-Wajh, southwest Tabuk Province, Saudi Arabia’s northwesterly border region. It is considered the highest mountain in this area and is enriched in wildlife. For the first time, the present research aimed to investigate the floristic composition, phytogeographical distribution, and plant diversity in Jabal Al-Ward. One hundred ninety-eight species representing 47 plant families have been identified. The Asteraceae, Poaceae, and Fabaceae represented more than a third of the region’s floristic composition. The perennial species (53.5%) were dominant over the annuals (46.46%). This is a prominent feature in Jabal Al-Ward, where the perennial species may be more tolerant of climatic changeability than the annuals. Seven life form categories were found; therophytes (46.46%) showed to be the most common life form. In addition, there were four main phytogeographical groups: Mono-regional, Bi-regional, Pluri-regional,...
Floristic diversity and vegetation structure of Al-Dissah area northwestern Saudi Arabia
THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 2017
This study was conducted on wadi Al-Dissah; a part of Jabal Qaraqir and its surrounding area in the Northwestern region of Saudi Arabia. Jabal Qaraqir in Saudi Arabia is the first site to be assessed for the Important Plant Area (IPA) programme in the Arabian Peninsula. This paper has the objective of determining the floristic composition, species diversity and the vegetation structure of the plant communities, including a breakdown of its different life forms and chorology of the recorded species. A total of 63 species belonging to 61 genera and 31 families were recorded. One family; Adiantaceae be longs to Pteridophyta, while the other 30 families are angiospermae. About 35% of the recorded species in the study area are belonging to four families: Asteraceae and Poaceae had the highest contribution (each had 9.5% of the total species followed by Bor aginaceae and Fabaceae (7.9% each). The data also reflect the high taxonomic diversity in the study area. The life form spectrum of the recorded species showed the prevalence of therophytes (49.2%) followed by chamaephytes (17.5%), phanerphytes (14.3%), ge ophytes (9.5%), while the least frequent life form class was hemicryptophytes (7.9%). The chorological analysis of the recorded species in the study area showed the predominance of bi-regional taxa (50.8%) over the other phytogeographical elements followed by the mono-regional (25.4%). The present study findings showed that most species belonged to Saharo-Arabian-Sudanian (15.9%) followed by Sudanian elements (11.1%). Only one endemic species is recorded in the study area; Dolichorhynchus arabicus I.C. Hedge & KitTan (syn Douepea arabica). It is a rare threatened endemic plant species in Saudi Arabia. It was locally in W adi Qaraqir. Other rare species were Ficus palmata which is a small tree with edible fruits, belonging to family Moraceae, and Parietaria umbricola which is an annual species belonging to family Urticaceae. Plant species of Al-Dissah area were checked with international IUCN list. Eight of the recorded species in the study area are globally threatened and incorporated into the IUCN Red List of Threatened Species Version 3.1: Cyperus laevigatus, Mentha longifolia, Nerium oleander, Phragmites australis, Tamarix nilotica, Typha domingensis, Chrozophora tinctoria, Adiantum capillus-veneris. All of them are included in the least concern category. Five plant communities were recognized in the study area. The highest plant diversity was reported in plant communities, which occupy the wet wadi bed where the perennial stream flows together with the nearby areas between palm trees; Phragmites australi s and Mentha longifolia communities. As floristic analyses are the prerequisites for conservation of plant species, therefore, it is critical to examine the current status of floristic and species diversity to provide appropriate guidelines for developing effective system of conservation and management. Information from this study may provide a valuable reference for appropriate conservation and management of the study area.
The present study surveyed the flora of the Jebel Fayfa region, SouthWest Saudi Arabia to analyze four elements of the vegetation: floristic diversity, life form, lifespan, and phytogeographical affinities. A total of 341 species of vascular plants were recorded belonging to 240 genera in 70 families, of which 101 species distributed among 40 families were considered as new additions to the flora of Jabal Fayfa. Six species are considered endemic to the study area while 27 are endangered. The most represented families were Fabaceae, Asteraceae, and Poaceae. The flora of Jabal Fayfa exhibited a high degree of monotypism. A total of 20 families (28.57%) were represented by a single species, and 180 genera (75.00%) were monotypic. The recorded flora consists of 70.09% perennials and 29.91% annuals. Phanerophytes and therophytes were the most frequent lifeforms. Phytogeographical analysis revealed that the biregional elements of the Saharo-Arabian/Sudano-Zambezian chorotype are the most dominant chorotypes (35.48%), forming two-thirds of the floristic structure in Jabal Fayfa. The new additions to the local flora of the region indicate that the Jabal Fayfa region and the country need further thorough botanical exploration and documentation which would help in adding several species to the flora of Saudi Arabia.
International Journal of Plant & Soil Science
Wadi Khulab considers one of the most important wadis in Jazan, southwestern Saudi Arabia. Thus the current work provides an analysis of the floristic composition, life form and chorology of plant life of the wadi, a total of 119 species related to 93 genera represented 44 vascular plants families were documented. Six families (Aizoaceae, Euphorbiaceae, Papilionaceae, Poaceae, Amaranthaceae and Asclepediaceae) provided nearly half of the total number of species reported. Therophytes and chamaephytes are the most frequent life forms which may indicating a typical desert spectrum vegetation. The floristic composition of the different geomorphologic landscape units offered differences in species richness in the different sectors of the wadi, and the phytochoria. Monoregional and biregional areas contained 45 species (41%), while biregional species were 39 species (36%) respectively, while only two species (2%) were recorded in the pleuriregion. It is thus concluded that the region should be considered a hot-spot in the Kingdom in terms of floral diversity.
Systematic composition, species diversity and plant chorology at Wadi Tashar, Jazan, Saudi Arabia
Wadi Tashar the border regions Near Yemen frontier, it is more favorable for plant growth The present studies concerned with analysis of floristic composition in addition to the vegetation analysis. A total of 89 species belonging to 68 genera and 27 families were recorded from various sample plots and attached areas. Biological spectrum showedthe most highly represented families were Poaceae, Euphorbiaceae and Amaranthaceae. where therophytes constituted 42% 31 species (35%) of the total species. Phanerophytes in this area represented by 11 species (12%), Only 10 species (11%) constituted cryptophytes. The highest species richness values are recorded in the wadi bed. The lowest species richness value are recorded in the wadi plateau. Chronological analysis revealed bi regional elements of Saharo-Arabian together Sudano-Zambezian have the highest share of species, representing 29 species followed by the Saharo-Arabian region elements at 21 taxa (23%), flowed tropical plants only by 9 species (10%), 8 cosmopolitan species (7%) present in the study. Irano-Turanian and Mediterranean are represented by five species representing 4%. Pluriregional elements that belong to the Saharo-Arabian and Mediterranean and Sudano-Zambezian representing 2% has only one species.
Floristic diversity of Wadi Ar'ar, Saudi Arabia
Journal of Taibah University for Science
One of the most countries containing which have biologically diverse, is Saudi Arabia. Among the plant species recorded in Saudi Arabia, about 30% are rare and around 18 plant species are thought to have been disappeared locally. The study aims to provide the researchers in various scientific fields with a list of wild plants available in the examined region. The current work focused on an analysis of life forms, life span and chorotypes in four fenced areas (Aoasa, Mayla, Goraba and Aqra) of wadi Ar'ar. A bout of 273 taxa belonging to 35 families and 169 genera of vascular plants were recorded. Phytogeographically, the listed species were classified into three groups; monoregional, biregional and pluriregional. Twenty four species were listed as cosmopolitan, paleotropical or pantropical. One important step in preserving our wild plants is to expand knowledge of vegetation and find solutions to preserve the environment and species from extinction.
Plant hotspot areas are the areas that are very rich in plant species diversity. These areas have a priority for conservation. To highlight the plant diversity for nature conservation purposes a case study in Al Baha region, Saudi Arabia is presented, in which the importance of the natural vegetation and flora of one of the hotspot areas of Saudi Arabia is evaluated through the explanation of its natural plant species. A survey study has been conducted in an area of 167.6 km2, a 97 sample each with 20X20 m were laid out covering the whole ecological zones of the study site. Data of flora, vegetation cover and topography were gathered from each sample site. The study revealed about 319 plant species belonging to 228 genera and 75 families. Two species were found endemic to Saudi Arabia, 14 were endemics to Arabian Peninsula, and five were regional endemics that are only found in East Africa and Arabian Peninsula, while 39 species are rare and endangered. Ó 2021 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
New records and addition to the flora of Saudi Arabia, mainly from Faifa Governorate, Jazan Region
Journal of King Saud University – Science, 2023
Based on vegetation surveys made in the southern region of Saudi Arabia between 2020 and 2021, five new plant taxa including four species and one subspecies, belonging to four families that had not previously been recorded in Saudi Arabia's flora were discovered. Within the Arabian Peninsula, all newly recorded species (i.e., Alysicarpus vaginalis (L.) DC. (Fabaceae), Commiphora schimperi (O.Berg) Engl. (Burseraceae), Maerua angolensis DC. subsp. angolensis (Capparaceae), Peperomia leptostachya Hook. & Arn. (Piperaceae), and Vigna vexillata (L.) A.Rich. (Fabaceae) were recorded in Yemen while A. vaginalis was also recorded in Oman. Brief descriptions and comments on the phytogeography of each taxon are given. The distribution of plants in Faifa Mountains and surrounding areas was mapped using geographic information systems (GIS) and ground surveys.
Afr. J. Biotechnol, 2010
Based on the current available information on the flora and vegetation of the Asir mountain of SW Saudi Arabia, spectra on life form and some other ecological attributes were analyzed and reviewed in different sub-ecosystem of the investigated area. The floristic list of Asir Mountain of the Kingdom of Saudi Arabia consists of 189 species belonging to 74 families, 65 dicotyledons (dicots), 4 monocotyledons (monocots), while gymnosperms and pteridophytes were represented by one family each. Asteraceae was the dominating family in the study area. According to the Raunkiaerian life form therophytes (36.5%) followed by hemicryptophytes (15%) and geophytes (12.5%) were dominant in the area. Chaemophytes 6.5%, mesophanerophytes 3%, megaphanerophytes 2%, nanophaneorophytes 13% and climbers 1.5% contribution in the establishment of vegetation structure in the study area. In leaf size spectra, the analysis revealed that microphylls (38.5%) followed by nanophylls (24%), leptophylls (13.5%), mesophylls (12%), macrophylls (3%) and megaphylls (1%) construct the vegetation belt of the area. The biological spectrum of the high altitude was characterized by phanerophytes mainly representing nanophanerophytic followed by hemicryptophytic and geophytic species. These were increasing with the rise in elevation while the megaphanerophytic species were decreasing. The vegetation cover in general and the tree layer in particular were observed very rare and sparse. The grassland vegetation is characterized by the largest percentage of hemicryptophytes. In this region, the vegetation expression was predominantly evergreen, although the tree flora has considerable elements of deciduous species. The dominance of phanerophytes appears to be due to high rainfall, temperature and low biotic pressure. However, the population of therophytic species was increasing in highly grazed and eroded areas.