干旱区生态环境知识资源中心(Arid): A preliminary evaluation of ecohydrological separation in a semi-arid riparian area

Arid

DOI	10.1016/j.ecohyd.2021.01.002
	A preliminary evaluation of ecohydrological separation in a semi-arid riparian area
	Gokool, Shaeden; Moody, Jade Elizabeth; Nippert, Jesse; Swemmer, Anthony; Chetty, Kershani Tinisha; Magombeyi, Manuel; Riddell, Edward Sebastian
通讯作者	Gokool, S (corresponding author), Univ KwaZulu Natal, ZA-3209 Pietermaritzburg, South Africa.
来源期刊	ECOHYDROLOGY & HYDROBIOLOGY
ISSN	1642-3593
EISSN	2080-3397
出版年	2021
卷号	21 期号:2 页码:271-279
英文摘要	In recent years the ecohydrological separation paradigm has stimulated significant scientific debate, as it challenges the basis of existing hydrological process understanding. Through the use of stable isotope analysis several studies have demonstrated that two isotopically distinct water stores may exist within the subsurface, a matric-bound store which sustains transpiration and a mobile store which contributes to the recharge of groundwater and streams. Despite growing evidence supporting this hypothesis, further testing across a range of climatic regimes and environmental settings has been advocated to develop an improved hydrological understand of this paradigm. In this study, the dual isotopic composition of meteoric and environmental waters was analysed in a semi-arid riparian environment during a significant El Nino induced drought, to ascertain if plants were using water that would have otherwise contributed to stream and/or groundwater recharge. Overall, the results of these investigations showed no clear evidence supporting ecohydrological separation. Environmental waters were found to be significantly different from rainfall, whereas no significant differences were established between xylem, bulk soil water, and streamflow. While, these findings represent a unique scenario with regards to the testing of ecohydrological separation, these results are by no means ubiquitous as sampling was conducted during extreme climatic conditions with limited spatio-temporal representation of the system. Therefore, longer-term sampling and monitoring is recommended to obtain an improved understanding of the system under a range of climatic conditions. (C) 2021 European Regional Centre for Ecohydrology of the Polish Academy of Sciences. Published by Elsevier B.V. All rights reserved.
英文关键词	Ecohydrological Separation Dual Stable Isotopes Isotopically Distinct Meteoric Water Lines Line-Conditioned Excess
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000640260200006
WOS关键词	WATER WORLDS HYPOTHESIS ; STABLE-ISOTOPE ; TRANSPIRATION ; GROUNDWATER ; STREAMS ; FLUXES
WOS类目	Ecology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367878
作者单位	[Gokool, Shaeden; Moody, Jade Elizabeth; Chetty, Kershani Tinisha; Riddell, Edward Sebastian] Univ KwaZulu Natal, Ctr Water Resources Res, Sch Agr Earth & Environm Sci, Pietermaritzburg, South Africa; [Nippert, Jesse] Kansas State Univ, Div Biol, Manhattan, KS 66506 USA; [Swemmer, Anthony] South African Environm Observat Network SAEON, Ndlovu Node, Phalaborwa, South Africa; [Magombeyi, Manuel] Southern Africa Reg Off, Int Water Management Inst IWMI, Sandton, South Africa; [Riddell, Edward Sebastian] South African Natl Pk, Conservat Management, Skukuza, South Africa
推荐引用方式 GB/T 7714	Gokool, Shaeden,Moody, Jade Elizabeth,Nippert, Jesse,et al. A preliminary evaluation of ecohydrological separation in a semi-arid riparian area[J],2021,21(2):271-279.
APA	Gokool, Shaeden.,Moody, Jade Elizabeth.,Nippert, Jesse.,Swemmer, Anthony.,Chetty, Kershani Tinisha.,...&Riddell, Edward Sebastian.(2021).A preliminary evaluation of ecohydrological separation in a semi-arid riparian area.ECOHYDROLOGY & HYDROBIOLOGY,21(2),271-279.
MLA	Gokool, Shaeden,et al."A preliminary evaluation of ecohydrological separation in a semi-arid riparian area".ECOHYDROLOGY & HYDROBIOLOGY 21.2(2021):271-279.