干旱区生态环境知识资源中心(Arid): Elevation-richness pattern of vascular plants in wadis of the arid mountain Gebel Elba, Egypt

Arid

DOI	10.1111/aje.12593
	Elevation-richness pattern of vascular plants in wadis of the arid mountain Gebel Elba, Egypt
	Abutaha, Maged M.1,2; El-Khouly, Ahmed A.1; Juergens, Norbert 2; Morsy, Amal A.3; Oldeland, Jens 2
通讯作者	Abutaha, Maged M.
来源期刊	AFRICAN JOURNAL OF ECOLOGY
ISSN	0141-6707
EISSN	1365-2028
出版年	2019
卷号	57 期号:2 页码:238-246
英文摘要	Mountains provide a unique opportunity to study drivers of species richness across relatively short elevation gradients. However, few studies have reported elevational patterns for arid mountains. We studied elevation-richness pattern along an elevational gradient at the arid mountain Gebel Elba, south-east of Egypt, expecting a unimodal richness pattern. We sampled 133 vegetation plots (10 x 10 m) in four wadis along an elevational gradient from 130 to 680 m which represents the transition from desert to mountain wadi systems. We used generalised additive models to describe the relationship between elevation and plant species richness. We found a strong increase in species richness and Shannon diversity at low elevations followed by a plateau at mid- to high elevations. When we analysed each tributary as a single gradient, no pattern was found. The analysed elevational gradient seems to be a major stress gradient in terms of temperature and water availability, exhibiting a trend of increasing species richness that changes to a plateau pattern; a pattern rarely observed for wadi systems in arid mountains. We discuss the observed pattern with the climatic stress hypothesis and the environmental heterogeneity hypothesis as possible explanations for the pattern.
英文关键词	altitude arid mountain GAM Gebel Elba plant diversity stress
类型	Article
语种	英语
国家	Egypt ; Germany
收录类别	SCI-E
WOS记录号	WOS:000466784900007
WOS关键词	SPECIES-RICHNESS ; ALTITUDINAL GRADIENT ; NATIONAL-PARK ; VEGETATION ; DIVERSITY ; PHYTOGEOGRAPHY ; SCALE
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/213912
作者单位	1.Desert Res Ctr, Dept Plant Ecol & Range Management, Cairo, Egypt; 2.Hamburg Univ, Biodivers Evolut & Ecol Plants, Inst Plant Sci & Microbiol, Hamburg, Germany; 3.Ain Shams Univ, Fac Sci, Bot Dept, Cairo, Egypt
推荐引用方式 GB/T 7714	Abutaha, Maged M.,El-Khouly, Ahmed A.,Juergens, Norbert,et al. Elevation-richness pattern of vascular plants in wadis of the arid mountain Gebel Elba, Egypt[J],2019,57(2):238-246.
APA	Abutaha, Maged M.,El-Khouly, Ahmed A.,Juergens, Norbert,Morsy, Amal A.,&Oldeland, Jens.(2019).Elevation-richness pattern of vascular plants in wadis of the arid mountain Gebel Elba, Egypt.AFRICAN JOURNAL OF ECOLOGY,57(2),238-246.
MLA	Abutaha, Maged M.,et al."Elevation-richness pattern of vascular plants in wadis of the arid mountain Gebel Elba, Egypt".AFRICAN JOURNAL OF ECOLOGY 57.2(2019):238-246.