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Author |
Mazor, E. |
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Title |
Chemical and isotopic groundwater hydrology |
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Year |
2003 |
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98 |
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CRC press |
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THL @ luqianxue.zhang @ mazor2003chemical |
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102 |
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Author |
Ali, R.; Salama, R.; Pollock, D.; Bates, L. |
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Title |
Geochemical interactions between groundwater and soil, groundwater recycling and evaporation in the ORIA |
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2002 |
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CSIRO Land and Water |
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no |
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THL @ luqianxue.zhang @ Ali2002 |
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50 |
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Author |
Rina, K.; Datta, P.S.; Singh, C.K.; Mukherjee, S. |
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Title |
Isotopes and ion chemistry to identify salinization of coastal aquifers of Sabarmati River Basin |
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Journal Article |
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Year |
2013 |
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Current Science |
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104 |
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3 |
Pages |
335-344 |
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Abstract |
The lower reaches of the Sabarmati River Basin in Gujarat have intense agricultural and industrial activities and this part is affected by problems of groundwater salinity. Here we attempt to assess the processes governing the causes of groundwater salinity in the coastal alluvial aquifer, employing δ18O and δD isotopes in integration with ionic ratio. The different hydrochemical facies such Na–Mg–HCO3–Cl, Na–Cl–SO4, Na–Mg–Cl–HCO3–SO4 and Na–Cl of groundwater show the occurrence of complex geochemical phenomenon in the study area. Ionic ratio (such as Mg2+/Ca2+, Na+/Cl−, SO24/Cl-, K+/Cl−) and isotopic composition (δ18O and δD) of groundwater indicate that while in coastal areas seawater intrusion is taking place, in inland areas various anthropogenic activities and overexploitation have induced salinity in groundwater. Over-pumping of groundwater has also induced lateral intermixing of highly saline water in the vicinity of coastal areas with relatively fresh/low saline groundwater along specific flow pathways. |
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Current Science Association |
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0011-3891 |
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THL @ christoph.kuells @ |
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190 |
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Author |
Mahindawansha, A. |
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Title |
Estimating water flux and evaporation losses using stable isotopes of soil water from irrigated agricultural crops in tropical humid regions |
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2019 |
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Deutsche Nationalbibliothek |
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THL @ christoph.kuells @ mahindawansha2019estimating |
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199 |
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Author |
Di Lorenzo, T.; Galassi, D.M.P. |
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Title |
Agricultural impact on Mediterranean alluvial aquifers: do groundwater communities respond? |
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Journal Article |
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Year |
2013 |
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Fundamental and Applied Limnology/Archiv für Hydrobiologie |
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182 |
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4 |
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271-282 |
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Keywords |
alluvial aquifers, groundwater, stygobiont, nitrate, overexploitation |
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Abstract |
In Mediterranean countries agricultural development heavily depends on groundwater availability due
to arid and semi-arid climate and poor surface-water resources. Agriculture represents one of the most relevant
pressures which generate impacts in alluvial aquifers by means of fertilizers and pesticides usage and groundwater
overexploitation. Until now, very few studies have addressed the ecological response of groundwater fauna to
groundwater contamination and overexploitation due to agricultural practices. We investigated a Mediterranean
alluvial aquifer heavily affected by nitrates contamination and groundwater abstraction stress due to crop irrigation. The aim of this study was to evaluate the sensitivity of groundwater communities to (a) groundwater nitrate
contamination, (b) groundwater abstraction due to irrigation practices, and (c) saltwater intrusion. The present
work suggests that nitrate concentration lower than 150 mg l
–1 is not an immediate threat to groundwater biodiversity in alluvial aquifers. This conclusion must be carefully considered in the light of the total lack of knowledge
of the effects of long-term nitrate pollution on the groundwater biota. Moreover, local extinctions of less tolerant
species, prior to monitoring, cannot be ruled out. Conversely, species abundances in ground water are affected by
groundwater withdrawal, but species richness may be less sensitive. This result is attributable to the disappearance
of saturated microhabitats and to the depletion of fine unconsolidated sediments, reducing the surface available
to bacterial biofilm, which represent the trophic resource for several groundwater invertebrates and where the
main aquifer self-purification processes, such as denitrification, take place. Saltwater intrusion seems not to affect
groundwater species at the values measured in this coastal aquifer. |
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E. Schweizerbart'sche Verlagsbuchhandlung |
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1863-9135 |
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Call Number |
THL @ luqianxue.zhang @ DiLorenzo2013 |
Serial |
43 |
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