干旱区生态环境知识资源中心(Arid): Ecological significance of floristic composition and life forms of Riyadh region, Central Saudi Arabia

Arid

DOI	10.1016/j.sjbs.2019.04.009
	Ecological significance of floristic composition and life forms of Riyadh region, Central Saudi Arabia
	Al Shaye, Najla A.1; Masrahi, Yahya S.2; Thomas, Jacob 3
通讯作者	Al Shaye, Najla A.
来源期刊	SAUDI JOURNAL OF BIOLOGICAL SCIENCES
ISSN	1319-562X
出版年	2020
卷号	27 期号:1 页码:35-40
英文摘要	Riyadh region is one of the hardest habitats in Saudi Arabia with a hyper-arid climate. This study was conducted to investigate floristic composition and plant life forms of Riyadh region and their ecological significance. Work aimed to determine the prevailing plant families and biological spectrum of their components that reflects the phytoclimate and adaptation to hyper-arid conditions of the region. Work involved field surveys of different locations in Riyadh region where plant specimens were collected and identified. Collected plant species were then listed according to their families and data were used to assess the contribution of different plant families to the flora of the region. Study of life forms was conducted to classify recorded floristic elements into categories that reflect environmental conditions prevailing in the region. Prevailing plant families were Asteraceae (17.4%), Poaceae (11%), Brassicaceae (9.9%), and Fabaceae (7%). These percentages reflect wide ecological ranges especially for Asteraceae and Poaceae. High presence of species belonging to Astreaceae and Poaceae can be attributed to their adaptation to harsh conditions as well as to effective wind dispersal strategies of their diaspores. While the most frequent life form classes were therophytes with 52%, and chamaephytes with 30%, phanerophytes and hemicryptophytes represented 9% and 8%, respectively. Predominance of therophytes and chamaephytes over other life forms is a response to hyper arid climate with insufficient rainfall and the nature of region of few available microhabitats that can support high percentage of perennials. (C) 2019 Production and hosting by Elsevier B.V. on behalf of King Saud University.
英文关键词	Riyadh region Floristic composition Life forms Adaptation Phytoclimate Saudi Arabia
类型	Article
语种	英语
国家	Saudi Arabia
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000503431500006
WOS关键词	VEGETATION
WOS类目	Biology
WOS研究方向	Life Sciences & Biomedicine - Other Topics
EI主题词	2020-01-01
来源机构	King Saud University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312036
作者单位	1.Princess Nourah Bint Abdulrahman Univ, Fac Sci, Dept Biol, Riyadh, Saudi Arabia; 2.Jazan Univ, Fac Sci, Dept Biol, Jazan, Saudi Arabia; 3.King Saud Univ, Fac Sci, Dept Bot & Microbiol, Riyadh, Saudi Arabia
推荐引用方式 GB/T 7714	Al Shaye, Najla A.,Masrahi, Yahya S.,Thomas, Jacob. Ecological significance of floristic composition and life forms of Riyadh region, Central Saudi Arabia[J]. King Saud University,2020,27(1):35-40.
APA	Al Shaye, Najla A.,Masrahi, Yahya S.,&Thomas, Jacob.(2020).Ecological significance of floristic composition and life forms of Riyadh region, Central Saudi Arabia.SAUDI JOURNAL OF BIOLOGICAL SCIENCES,27(1),35-40.
MLA	Al Shaye, Najla A.,et al."Ecological significance of floristic composition and life forms of Riyadh region, Central Saudi Arabia".SAUDI JOURNAL OF BIOLOGICAL SCIENCES 27.1(2020):35-40.