干旱区生态环境知识资源中心(Arid): Processes controlling groundwater salinity in coastal wetlands of the southern edge of South America

Arid

DOI	10.1016/j.scitotenv.2020.141951
	Processes controlling groundwater salinity in coastal wetlands of the southern edge of South America
	Galliari, Julieta; Santucci, Lucia; Misseri, Lucas; Carol, Eleonora; Alvarez, Maria del Pilar
通讯作者	Carol, E
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	754
英文摘要	The Argentine Atlantic coast constitutes an extensive area where numerous wetlands develop under humid, semi-arid and arid conditions, in which there are also variations in relation to tidal influence with estuarine, mixing and marine areas. The aim of this work is to conduct a comparative study on the processes controlling the groundwater salinity in medium to high latitudinal coastal wetlands of four natural reserves with contrasting hydrological and climatic conditions. In each study area a monitoring network was established where the content of CO32-, HCO3-, Cl-, SO42-, Ca2+, Mg2+, Na+, K+, delta H-2 and delta O-18 of the water were determined. The results show a saline groundwater increase along a latitudinal gradient with electrical conductivities varying from 0.3 mS/cm at 34 degrees 47 S to 154 mS/cm at 42 degrees 25' S. The results obtained show that the ionic contents in groundwater are partially controlled by the salinity of the tidal flood water whose electrical conductivity varies from 0.3 mS/cm in the Rio de la Plata estuary to 52 mS/cm in the sea water of the southern study area. In the southern wetlands, where an increase of aridity is also registered, there is a clear increase in groundwater ionic concentrations, which occurs without isotopic enrichment indicating processes of salts dissolution of the sediments. The evaporites precipitation occurs due to the total evaporation of the tidal water that floods the wetlands in spring high tides. The salinization of groundwater responds to natural processes inherent to the hydrological, climatic and lithological characteristics of each wetland. Given that the areas studied correspond to natural reserves, the results generate databases that will allow the identification of future changes in salinity associated with anthropic influences or changes in hydrological and/or climatic conditions as a result of climate change. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Environmental isotopes Hydrochemistry Groundwater salinity Estuary-sea water Coastal reserves Argentine littoral
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000593987700011
WOS关键词	LA-PLATA ESTUARY ; SALT MARSHES ; PLANT-COMMUNITIES ; PENINSULA VALDES ; SOIL-SALINITY ; FRESH ; HYDROCHEMISTRY ; SALINIZATION ; GRADIENT ; ZONATION
WOS类目	Environmental Sciences
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/2XILL650/328042
作者单位	[Galliari, Julieta] CEQUINOR CONICET, Ctr Quim Inorgan, La Plata, Buenos Aires, Argentina; [Santucci, Lucia; Carol, Eleonora] CIG CONICET UNLP, Ctr Invest Geol, La Plata, Buenos Aires, Argentina; [Misseri, Lucas; Alvarez, Maria del Pilar] IPEEC CONICET, Inst Patagon Estudio Ecosistemas Continentales, Puerto Madryn, Argentina
推荐引用方式 GB/T 7714	Galliari, Julieta,Santucci, Lucia,Misseri, Lucas,et al. Processes controlling groundwater salinity in coastal wetlands of the southern edge of South America[J],2021,754.
APA	Galliari, Julieta,Santucci, Lucia,Misseri, Lucas,Carol, Eleonora,&Alvarez, Maria del Pilar.(2021).Processes controlling groundwater salinity in coastal wetlands of the southern edge of South America.SCIENCE OF THE TOTAL ENVIRONMENT,754.
MLA	Galliari, Julieta,et al."Processes controlling groundwater salinity in coastal wetlands of the southern edge of South America".SCIENCE OF THE TOTAL ENVIRONMENT 754(2021).