干旱区生态环境知识资源中心(Arid): Resource redistribution effects on annual plant communities in a runoff harvesting system in dryland

Arid

DOI	10.1016/j.jaridenv.2019.05.012
	Resource redistribution effects on annual plant communities in a runoff harvesting system in dryland
	Paz-Kagan, Tarin 1; DeMalach, Niv 2; Zaady, Eli 3; Shachak, Moshe 4
通讯作者	Paz-Kagan, Tarin
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2019
卷号	171
英文摘要	We aimed to study the effect of resource redistribution on annual plant species diversity in Runoff-Harvesting Systems, termed limans, along the runoff pathway in a watershed. We tested the effect of resource redistribution (water and nutrients) relative role of biomass, grass and forb abundance as mediators of species diversity. Our research was conducted in five small watersheds located in the central Negev Highlands, Israel. We quantified nutrient addition including soil nitrogen, phosphorus, potassium, total water content, and soil organic matter, in the liman, compared with two microsites (upstream, and downstream) along watersheds. We quantified biomass, grass and forb abundance and species richness in two successive years. We used structural equation modeling to study the effect of grass and forb abundance and biomass on the species richness of herbaceous plant communities. All tested soil properties significantly improved in the lint= compared with the two microsites. Annual biomass increased significantly in the liman in compared with the downstream microsite. Our results also indicate a reduction in forb abundance in the liman and the downstream, and increment in the grass abundance in the liman microsite, leading to a decline in plant species richness. We conclude that diversity responses to biomass production are both resource-specific and functional group-specific.
英文关键词	Nutrient enrichment Species richness Biomass Forb Grasses Water enrichment Conductivity Dryland watershed management
类型	Article
语种	英语
国家	Israel ; USA
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000497258500002
WOS关键词	NEGEV-DESERT ; ENVIRONMENTAL-FACTORS ; WATER ; ECOSYSTEM ; CLIMATE ; CONNECTIVITY ; AGRICULTURE ; COMPETITION ; DEPOSITION ; VEGETATION
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-12-01
来源机构	Ben-Gurion University of the Negev
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311390
作者单位	1.Agr Res Org, Volcani Ctr, Inst Agr Engn, Dept Sensing Informat & Mechanizat Engn, Bet Dagan, Israel; 2.Stanford Univ, Dept Biol, Stanford, CA 94305 USA; 3.Agr Res Org, Gilat Res Ctr, Inst Plant Sci, Dept Nat Resources, Negev, Israel; 4.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Sede Boker Campus, Beer Sheva, Israel
推荐引用方式 GB/T 7714	Paz-Kagan, Tarin,DeMalach, Niv,Zaady, Eli,et al. Resource redistribution effects on annual plant communities in a runoff harvesting system in dryland[J]. Ben-Gurion University of the Negev,2019,171.
APA	Paz-Kagan, Tarin,DeMalach, Niv,Zaady, Eli,&Shachak, Moshe.(2019).Resource redistribution effects on annual plant communities in a runoff harvesting system in dryland.JOURNAL OF ARID ENVIRONMENTS,171.
MLA	Paz-Kagan, Tarin,et al."Resource redistribution effects on annual plant communities in a runoff harvesting system in dryland".JOURNAL OF ARID ENVIRONMENTS 171(2019).